时间：2021-12-30 04:29:44 点击：39
威格士柱塞泵常见故障处理 1.柱塞泵输出流量不足或不输出油液 (1)吸入量不足。原因是吸油管路上的阻力过大或补油量不足。如泵的转速过大，油箱中液面过低，进油管漏气，滤油器堵塞等。 (2)泄漏量过大。原因是泵的间隙过大，密封不良造成。如配油盘被金属碎片、铁屑等划伤，端面漏油;变量机构中的单向阀密封面配合不好，泵体和配油盘的支承面有砂眼或研痕等。可以通过检查泵体内液压油中混杂的异物判别泵被损坏的部位。 (3)倾斜盘倾角太小，泵的排量少，这需要调节变量活塞，增加斜盘倾角。 2.中位时排油量不为零 变量式轴向柱塞泵的斜盘倾角为零时称为中位，此时泵的输出流量应为零。但有时会出现中位偏离调整机构中点的现象，在中点时仍有流量输出。其原因是控制器的位置偏离、松动或损伤，需要重新调零、紧固或更换。泵的角度维持力不够、倾斜角耳轴磨损也会产生这种现象。 3.输出流量波动 输出流量波动与很多因素有关。对变量泵可以认为是变量机构的控制不佳造成，如异物进入变量机构，在控制活塞上划出阶痕、磨痕、伤痕等，造成控制活塞运动不稳定。由于放大器能量不足或零件损坏、含有弹簧的控制活塞的阻尼器效能差，都会造成控制活塞运动不稳定。流量不稳定又往往伴随着压力波动。这类故障一般要拆开液压泵，更换受损零部件，加大阻尼，提高弹簧刚度和控制压力等。 4.输出压力异常 泵的输出压力是由负载决定的，与输入转矩近似成正比。输出压力异常有两种故障。 (1)输出压力过低 当泵在自吸状态下，若进油管路漏气或系统中液压缸、单向阀、换向阀等有较大的泄漏，均会使压力升不上去。这需要找出漏气处，紧固、更换密封件，即可提高压力。溢流阀有故障或调整压力低，系统压力也上不去，应重新调整压力或检修溢流阀。如果液压泵的缸体与配流盘产生偏差造成大量泄漏，严重时，缸体可能破裂，则应重新研磨配合面或更换液压泵。 (2)输出压力过高 若回路负载持续上升，泵的压力也持续上升，当属正常。若负载一定，泵的压力**过负载所需压力值，则应检查泵以外的液压元件，如方向阀、压力阀、传动装置和回油管道。若较大压力过高，应调整溢流阀。 5.振动和噪声 振动和噪声是同时出现的。它们不仅对机器的操作者造成危害，也对环境造成污染。 (1)机械振动和噪声 如泵轴和电机轴不同心或**死，旋转轴的轴承、联轴节损伤，弹性垫破损和装配螺栓松动均会产生噪声。对于高速运转或传输大能量的泵，要定期检查，记录各部件的振幅、频率和噪声。如泵的转动频率与压力阀的固有频率相同时，将会引起共振，可改变泵的转速以消除共振。 (2)管道内液流产生的噪声 进油管道太细、进油滤油器通流能力过小或堵塞、进油管吸入空气、油液豁度过高、油面过低吸油不足和高压管道中产生液击等，均会产生噪声。因此，必须正确设计油箱，正确选择滤油器、油管和方向阀。 6.威格士柱塞泵过热 液压泵过度发热有两个原因，一是机械摩擦生热。由于运动表面处于干摩擦或半干摩擦状态，运动部件相互摩擦生热。二是液体摩擦生热。高压油通过各种缝隙泄漏到低压腔，大量的液压能损失转为热能。所以正确选择运动部件之间的间隙、油箱容积和冷却器，可以杜绝泵的过度发热和油温过高的现象。另外，回油过滤器堵塞造成回油背压过高，也会引起油温过高和泵体过热。 7.漏油 柱塞泵漏油主要有以下原因:(1)主轴油封损坏或轴有缺陷、划痕;(2)内部泄漏过大，造成油封处压力增大，而将油封损伤或冲出;(3)泄油管过细过长，使密封处漏油;(4)泵的外接油管松动，管接头损伤，密封垫老化或产生裂纹;(5)变量调节机构螺栓松动，密封破损;(6)铸铁泵壳有砂眼或焊接不良。 PVH98QIC-RF-2S-11-C25T15-31 PVH074R01AA10D170011001001AA010A PVH74C-RF-1S-11-C17T11-31 PVH074R02AA10E242019AA1BA1AA010A PVH74C-RAF-2S-11-C24VBT19-31-231 PVH057R01AA10A070000001AE1AA010A PVH57C-RAF-1S-11-CM7-31 PVH074R01AA10E212007001001AE010A PVH74QIC-RF-1S-11-C21VT7-31 PVH074L52AA10B252000001001AA010A PVH74C2-LF-2S-11-C25V-31 PVH098L02AJ30A250000001002AA010A PVH98C-LF-2D-11-C25-31 PVH074R01AA10E252004001001AA010A PVH74C-RF-1S-11-C25VT4-31 PVH131L12AJ30B252000002001AA010A PVH131C-LSF-12S-11-C25V-31 PVH074R13AA10E252017001AF1AE010A PVH74QIC-RAF-13S-11-C25VT17-31 PVH131R02AF30A250000001AT1AA010A PVH131C-RAF-2S-11-C25-31-196 PVH131R16AF30D200007001AD1AE010A PVH131QIC-RAF-16S-11-C20T7-31 PVH074R02AA10A22000000B001AA010A PVH74C-RF-2S-11-C22-31-238 PVH131R13AF30D250007001001AE010A PVH131QIC RF 13S 11 C25T7 31 PVH074R02AA10D200009001AF1AE010A PVH74QIC-RAF-2S-11-C20T9-31-036 PVH131L02AF30B212000001AD2AA010A PVH131C-LAF-2D-11-C21V-31-036 PVH074R01AA10D070004AG1001AA010A PVH74C-RF-1S-11-C7T4-31 PVH141R13AF30A230000001001AE010A PVH141QIC RF 13S 11 C23 31 PVH131L02AF30B252000001001AA010A PVH131C-LF-2S-11-C25V-31-046 PVH074R13AA10D250010001AF1AE010A PVH74QIC-RAF-13S-11-C25T10-31 PVH098L02AJ30B252000001AJ1AA010A PVH98C-LBF-2S-11-C25V-31-036 PVH074R52AA10A070000001AF1AE010A PVH74QIC2-RAF-2S-11-CM7-31-036 PVH098L52AJ30B252000001001AA010A PVH98C2-LF-2S-11-C25V-31-181 PVH074L02AAD0B122000AG1AF100010A PVH74C-LAF-2S-10-C12V-31-241 PVH074L02AAD0B122000AG100100010A PVH74C-LF-2S-10-C12V-31-245 PVH57C LBF 2S 11 C12V 31 243 PVH057L02AAD0B122000AG1AB100010A PVH57C-LBF-2S-10-C12V-31-244 PVH057L02AAD0B17200000100100010A PVH57C-LF-2S-10-C17V-31-245 PVH057L02AA10B252000001AN1AA010A PVH57C-LCF-2S-11-C25V-31 PVH131R02AF30B252000001AD1AA010A PVH131C-RAF-2S-11-C25V-31-036 PVH098R01AJ30E252009001001AA010A PVH98C-RF-1S-11-C25VT9-31 PVH098R03AJ30A250000001001AE010A PVH98QIC-RF-3S-11-C25-31 PVH141R16AF30D230004001AD1AE010A PVH141QIC-RAF-16S-11-C23T4-31 PVH141R16AF30B072000001AD1AE010A PVH141QIC-RAF-16S-11-CM7V-31 PVH141R03AF30A070000001001AE010A PVH141QIC-RF-3S-11-CM7-31 PVH098L02AJ30A250000001AT1AA010A PVH98C-LAF-2S-11-C25-31-031 PVH131L03AF30E272015001AD2AA010A PVH131C-LAF-3D-11-C27VT15-31 PVH074R01AA10D100005001001AA010A PVH74C-RF-1S-11-CM10T5-31 PVH074R01AA10D170006001001AE010A PVH74QIC-RF-1S-11-C17T6-31 PVH074R52AA10E252004001AF1AE010A PVH74QIC2-RAF-2S-11-C25VT4-31-036 PVH098R02AJ30B252000001AJ1AA010A PVH98C RBF 2S 11 C25V 31 036 PVH057R01AA10E252008001001AA010A PVH57C RF 1S 11 C25VT8 31 PVH057R02AA10B152000001AE2AA010A PVH57C-RAF-2D-11-C15V-31 PVH074R01AA10E212006001001AE010A PVH74QIC-RF-1S-11-C21VT6-31 PVH098R03AJ30E252008001AD1AA010A PVH98C-RAF-3S-11-C25VT8-31 PVH074L51AA10B252000002001AA010A PVH74C2-LSF-1S-11-C25V-31 PVH098R02AJ30C250004001001AA010A PVH98C-RF-2S-11-C25T4S-31 PVH074R13AA10E142008001AF1AE010A PVH74QIC RAF 13S 11 C14VT8 31 PVH098L03AJ30E252004001AD1AA010A PVH98C-LAF-3S-11-C25VT4-31 PVH098L03AJ30B252000001AD2AR010A PVH98C-LAF-3D-11-C25V-31-164 PVH057L01AA10E252004001001AA010A PVH57C-LF-1S-11-C25VT4-31 PVH074R01AA10E252018001001AE010A PVH74QIC-RF-1S-11-C25VT18-31 PVH141R16AF30A250000001AJ1AE010A PVH141QIC-RBF-16S-11-C25-31 PVH074R01AA10B162000002001AF010A PVH74QPC RSF 1S 11 C16V 31 PVH074R13AA10A250000001AF1AB010A PVH74QIC-RAF-13S-10-C25-31 PVH074R13AA10B252000001AF1AB010A PVH74QIC-RAF-13S-10-C25V-31 PVH074L02AA10B252000AF100100010A PVH74C-LF-2S-10-C25V-31-023 PVH057R01AA10A070000001001AB010A PVH57QIC-RF-1S-10-CM7-31 PVH074L01AA10A250000001001AB010A PVH74QIC-LF-1S-10-C25-31 PVH074L02AA10B252000001AF1AD010A PVH74QC-LAF-2S-10-C25V-31-036 PVH098R01AJ30A070000001001AB010A PVH98QIC-RF-1S-10-CM7-31 PVH098R13AJ30A070000001AM1AB010A PVH98QIC-RCF-13S-10-CM7-31 PVH074R01AA10B17200000100100010A PVH74C-RF-1S-10-C17V-31 PVH074R02AA10A070000001001AB010A PVH74QIC-RF-2S-10-CM7-31 PVH098R02AJ30A250000001001AB010A PVH98QIC-RF-2S-10-C25-31 PVH074L02AA10A07000000100100010A PVH74C-LF-2S-10-CM7-31 PVH131R13AG30A250000001001AB010A PVH131QIC-RM-13S-10-C25-31 PVH074R03AA10A070000001AF1AB010A PVH74QIC-RAF-3S-10-CM7-31 PVH098R13AJ30B072000001AD1AB010A PVH98QIC-RAF-13S-10-CM7V-31 PVH057R02AA10B252000001001AB010A PVH57QIC-RF-2S-10-C25V-31 PVH131R12AF30B202000001AD200010A PVH131C-RAF-12D-10-C20V-31 PVH057L01AA10B252000001AE100010A PVH57C-LAF-1S-10-C25V-31 PVH131R13AF30A070000001001AB010A PVH131QIC-RF-13S-10-CM7-31 PVH074R13AA10A250000001AL1AB010A PVH74QIC-RBF-13S-10-C25-31 PVH098R13AJ30A250000001AM1AB010A PVH98QIC-RCF-13S-10-C25-31 PVH098L01AJ30A250000001001AB010A PVH98QIC-LF-1S-10-C25-31 PVH074R13AA10A070000001AF1AB010A PVH74QIC-RAF-13S-10-CM7-31 PVH098L03AJ30B252000001AM100010A PVH98C-LCF-3S-10-C25V-31 PVH131R16AF30A070000001AD1AB010A PVH131QIC-RAF-16S-10-CM7-31 PVH074R03AA10A250000001AF1AB010A PVH74QIC-RAF-3S-10-C25-31 PVH098R03AJ30A250000001AD1AB010A PVH98QIC-RAF-3S-10-C25-31 PVH057R02AA10A150000001AE200010A PVH57C-RAF-2D-10-C15-31 PVH057R02AA10A070000001001AB010A PVH57QIC-RF-2S-10-CM7-31 PVH057R01AA10B162000001001AB010A PVH57QIC-RF-1S-10-C16V-31 PVH074L02AA10B252000001AF100010A