Coupling for pump and hydraulic pump with same

Abstract

The pump coupler comprises a pump head coupler, a motor coupler, a pin and an alarm device, a first through hole is formed in the end face of the pump head coupler, a second through hole is formed in the end face of the motor coupler, and the two ends of the pin are detachably inserted into the first through hole and the second through hole respectively. The alarm device is inserted into the first through hole and the second through hole and clamped between the rubber outer layer of the pin and the inner side walls of the first through hole and the second through hole, and when the rubber outer layer of the pin is abraded, the alarm device can make contact with an iron core of the pin and can send a feedback signal to the outside. Through the arrangement, the abrasion condition of the pin can be automatically judged, a feedback signal can be sent in time, a worker is warned to disassemble and replace the pin in time, the time delay is lower, the possibility that the pump coupler is abraded and damaged can be further reduced, the situation that the pump coupler is excessively abraded and is not found in time, and consequently the pump coupler is suddenly shut down is avoided, and the service life of the pump coupler is prolonged. And the production loss of the hydraulic pump is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps, and in particular relates to a coupling for a pump and a hydraulic pump having the coupling. Background Art

[0002] The liquid (mainly water) supply process is often supplied by a water pump, which consists of a pump head and a motor. The pump coupling in the pump head and the motor coupling on the motor shaft are connected by fasteners, and the connection adopts a built-in pin. The pin is the main vulnerable part in the water pump. The main failure form of the pin is wear, which will cause the whole water pump to vibrate, and then cause damage to related parts such as bearings, pump couplings and motor couplings.

[0003] In order to solve the above problems, the pins are often disassembled, repaired or replaced regularly or by checking whether the vibration value of the water pump exceeds the threshold value to avoid wear and damage to other related parts. However, the above methods have a certain delay and cannot detect and eliminate the problem in time, resulting in the possibility of damage to related parts in the water pump, which leads to high maintenance costs or forced shutdown for maintenance and replacement, resulting in plant downtime losses.

[0004] Based on the above, there is an urgent need for a pump coupling and a hydraulic pump having the same to solve the technical problems existing in the prior art. Utility Model Content

[0005] The first purpose of the utility model is to provide a pump coupling, which can promptly find the pins that need to be replaced, further reduce the possibility of other related parts being worn and damaged, thereby reducing production losses.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A pump coupling comprises a pump head coupling, a motor coupling and a pin, wherein a first through hole is penetrated on the end surface of the pump head coupling, a second through hole is penetrated on the end surface of the motor coupling, and both ends of the pin are detachably inserted into the first through hole and the second through hole respectively. The pump coupling also comprises an alarm device, which is inserted into the first through hole and the second through hole and is clamped between the rubber outer layer of the pin and the inner side walls of the first through hole and the second through hole. When the rubber outer layer of the pin is worn, the alarm device can contact the iron core of the pin and send a feedback signal to the outside world.

[0008] Optionally, the alarm device includes an extrusion structure, an alarm circuit and an alarm device, the extrusion structure is clamped between the rubber outer layer and the inner walls of the first through hole and the second through hole, the alarm device is connected to the extrusion structure through the alarm circuit, and when the rubber outer layer is worn, the extrusion structure comes into hard contact with the vibrating iron core and deforms, and the alarm device can receive the deformation information of the extrusion structure and send the feedback signal to the outside world.

[0009] Optionally, the pump coupling further includes a power supply device; the extrusion structure includes a first conductive layer, a second conductive layer and a deformable supporting auxiliary strip, the first conductive layer and the second conductive layer are arranged at intervals and are located between the rubber outer layer and the inner side walls of the first through hole and the second through hole, the first conductive layer is connected to the second conductive layer through the deformable supporting auxiliary strip, and when the deformable supporting auxiliary strip is in a compressed state, at least part of the first conductive layer is in contact with the second conductive layer;

[0010] The alarm circuit includes a first wire and a second wire, one end of the first wire is connected to the positive pole of the power supply device, the other end of the first wire is connected to the first conductive layer, one end of the second wire is connected to the negative pole of the power supply device, and the other end of the second wire is connected to the second conductive layer through the alarm device.

[0011] Optionally, along the radial direction of the pump coupling, two layers of the extrusion structure are arranged between the inner walls of the first through hole, the second through hole and the rubber outer layer, and two adjacent layers of the extrusion structure can produce hard contact so that the deformable supporting auxiliary strips in each layer of the extrusion structure are in a compressed state.

[0012] Optionally, the deformable supporting auxiliary strip includes a first strip piece and a second strip piece, the first strip piece and the second strip piece are both connected to the first conductive layer and the second conductive layer, and the first strip piece and the second strip piece are spaced apart, a first stitch is provided on the first strip piece, and a second stitch is provided on the second strip piece, the first stitch is connected to the other end of the first wire, and the second stitch is connected to the other end of the second wire, and when the first strip piece and the second strip piece are in a compressed state, the first stitch can abut against the second stitch.

[0013] Optionally, a plurality of the first pins are arranged at intervals on the first strip, a plurality of the second pins are arranged at intervals on the second strip, and the first pins and the second pins are arranged alternately in sequence.

[0014] Optionally, along the circumferential direction of the rubber outer layer, a plurality of the first strip-shaped members and the second strip-shaped members are alternately arranged in sequence between the first conductive layer and the second conductive layer.

[0015] Optionally, the alarm device includes a controller and an audible and visual alarm, the controller is connected to the extrusion structure via the alarm circuit, and the audible and visual alarm is electrically connected to the controller.

[0016] The second purpose of the utility model is to provide a hydraulic pump that can dismantle and replace worn pins in a timely and effective manner, thereby reducing the possibility of wear and damage to the pump head coupling, thereby ensuring the stability of the hydraulic pump operation and avoiding production losses caused by sudden shutdowns.

[0017] To achieve this purpose, the utility model adopts the following technical solutions:

[0018] A hydraulic pump comprises a pump head and a motor. The hydraulic pump further comprises the above-mentioned pump coupling. The pump head is connected to the motor via the pump coupling.

[0019] Optionally, a threaded fastener is further included, and the pump coupling includes a pump head coupling and a motor coupling, and the pump head coupling is detachably connected to the motor coupling via the threaded fastener.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model provides a coupling for a pump, in which an alarm device is inserted into the first through hole and the second through hole, and is sandwiched between the inner side walls of the first through hole and the second through hole of the rubber outer layer of the pin. When the rubber outer layer of the pin is worn, the alarm device can contact the iron core of the pin, which indicates that the rubber outer layer of the pin is worn, and then the alarm device sends a feedback signal to the outside world. Through the above arrangement, the wear condition of the pin can be automatically judged, and a feedback signal can be sent in time, so that the operator can disassemble and replace the pin in time, with lower delay, and can further reduce the possibility of the pump head coupling and the motor coupling being worn and damaged, thereby avoiding the situation where the pump head coupling and the motor coupling are excessively worn and not discovered in time, resulting in sudden shutdown and production losses.

[0022] The utility model also provides a hydraulic pump, including a pump head, a motor and the above-mentioned pump coupling, the pump head is connected to the motor through the pump coupling, and since the above-mentioned pump coupling is provided with an alarm device, when the rubber outer layer of the pin is worn and the iron core is exposed, the alarm device can contact the iron core and send a feedback signal to the outside world to automatically judge the wear condition of the pin, thereby ensuring that the operator can disassemble and replace the worn pin in a timely and effective manner, reducing the possibility of wear and damage of the pump head coupling and the motor coupling, thereby ensuring the stability of the hydraulic pump operation and avoiding production losses caused by sudden shutdowns. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a hydraulic pump provided by an embodiment of the utility model;

[0024] Figure 2 A schematic diagram of the structure of a pump coupling provided by an embodiment of the utility model;

[0025] Figure 3 A front view of a pump head coupling provided by an embodiment of the utility model;

[0026] Figure 4 An assembly diagram between the alarm device in the first through hole and the pin provided by the embodiment of the utility model;

[0027] Figure 5 A schematic diagram of the structure of the extrusion structure provided by an embodiment of the utility model;

[0028] Figure 6 A partial structural schematic diagram of the extrusion structure provided in an embodiment of the utility model.

[0029] In the figure:

[0030] 10. Pump head; 11. Pump shaft;

[0031] 20. Motor; 21. Motor shaft;

[0032] 30. Pump coupling; 31. Pump head coupling; 311. First through hole; 32. Motor coupling; 33. Pin; 34. Alarm device; 341. Extrusion structure; 3411. First conductive layer; 3412. Second conductive layer; 3413. Deformable supporting auxiliary strip; 34131. First strip; 34132. Second strip; 3414. First pin; 3415. Second pin; 342. Alarm circuit; 3421. First wire; 3422. Second wire; 343. Alarm device; 35. Power supply device;

[0033] 40. Threaded fasteners. DETAILED DESCRIPTION

[0034] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0037] Figure 1 A schematic diagram of the structure of a hydraulic pump provided by an embodiment of the utility model; Figure 2 A schematic diagram of the structure of a pump coupling provided by an embodiment of the utility model; Figure 3 A front view of a pump head coupling provided by an embodiment of the utility model; Figure 4 An assembly diagram between the alarm device in the first through hole and the pin provided by the embodiment of the utility model; Figure 5 A schematic diagram of the structure of the extrusion structure provided by an embodiment of the utility model; Figure 6 A partial structural schematic diagram of the extrusion structure provided in an embodiment of the utility model.

[0038] Combine the following Figures 1 to 6 The pump coupling provided by the utility model and the hydraulic pump having the same are introduced with reference to specific embodiments. The hydraulic pump also includes a pump head 10 and a motor 20. The pump shaft of the pump head 10 is connected to the motor shaft of the motor 20 through the pump coupling 30, so that the motor 20 can transmit the rotational power to the pump head 10 through the motor shaft and the pump shaft, driving the pump head 10 to operate for liquid delivery.

[0039] Specifically, refer to Figure 1 As shown, the pump coupling 30 includes a pump head coupling 31, a motor coupling 32 and a pin 33. Among them, a first through hole 311 is formed on the end surface of the pump head coupling 31, and a second through hole is formed on the end surface of the motor coupling 32. The two ends of the pin 33 are respectively detachably plugged into the first through hole 311 and the second through hole to achieve a fixed connection between the motor coupling 32 and the pump head coupling 31, so that the motor 20 can transmit the rotational power to the pump head 10. The pin 33 includes an iron core and a rubber outer layer wrapped on the outer surface of the iron core. During the operation of the hydraulic pump, the pin 33 and the pump head coupling 31 and the motor coupling 32 generate friction, resulting in the rubber outer layer on the outer surface of the iron core being easily worn, exposing the internal iron core, and the iron core collides with the pump head coupling 31 and the motor coupling 32, resulting in serious damage to the pump head coupling 31 and the motor coupling 32. Therefore, the operator can disassemble and replace the pin 33 to reduce the damage to the pump head coupling 31 and the motor coupling 32, thereby ensuring the normal operation of the hydraulic pump.

[0040] In this embodiment, Figure 2 As shown, the pump head coupling 31 and the motor coupling 32 are detachably connected via threaded fasteners 40 (such as fastening bolts). While ensuring that the motor coupling 32 and the pump head coupling 31 are firmly connected, the efficiency of disassembly and assembly of the pump head coupling 31 and the motor coupling 32 can be improved, thereby helping to improve the efficiency of disassembly and replacement of the pin 33, reduce the downtime of the hydraulic pump, and ensure the continuity of production.

[0041] In order to detect the wear condition of the pin 33 in time, the pump head coupling 31 provided in this embodiment also includes an alarm device 34. Figures 2 to 3 As shown, the alarm device 34 is inserted into the first through hole 311 and the second through hole, and is sandwiched between the inner side walls of the first through hole 311 and the second through hole of the rubber outer layer of the pin 33. When the rubber outer layer of the pin 33 is worn, the alarm device 34 can contact the iron core of the pin 33, and then the alarm device 34 sends a feedback signal to the outside world. Compared with the method of regularly disassembling and replacing the pin 33, or judging whether the pin 33 is worn by the vibration value of the hydraulic pump, or judging whether the pin 33 is worn by the abnormal sound generated, the above-mentioned setting can automatically judge the wear condition of the pin 33 and send a feedback signal in time, so that the operator can disassemble and replace the pin 33 in time, with lower delay, and can further reduce the possibility of the pump head coupling 31 and the motor coupling 32 being worn and damaged, thereby avoiding the situation that the pump head coupling 31 and the motor coupling 32 are too worn and not discovered in time and suddenly stop, causing production losses.

[0042] It should be noted that Figure 3 Only the alarm device 34 and the pin 33 in one of the first through holes 311 are shown. In this embodiment, each first through hole 311 and the corresponding second through hole are provided with an alarm device 34 and a pin 33 so that the wear condition of each pin 33 can be detected.

[0043] Specifically, Figure 2 As shown, the alarm device 34 includes an extrusion structure 341, an alarm circuit 342 and an alarm device 343. The alarm device 343 is connected to the extrusion structure 341 through the alarm circuit 342. The extrusion structure 341 is clamped between the rubber outer layer of the pin 33 and the inner walls of the first through hole 311 and the second through hole. The alarm device 343 is installed on the pump head coupling 31. When the rubber outer layer is worn, the iron core is exposed and comes into hard contact with the extrusion structure 341. The extrusion structure 341 is worn and vibrates, causing the extrusion structure 341 to deform. The extrusion structure 341 can send deformation information to the alarm device 343, so that the alarm device 343 can send a feedback signal to the outside world. Through the above-mentioned arrangement, the alarm device 34 can detect the wear condition of the pin 33 by physical contact. Once the rubber outer layer is worn and the iron core is exposed, the extrusion structure 341 will come into contact with the iron core and deform. Compared with electronic sensors or other more complex detection devices, it is more reliable in principle, reduces complexity and cost, and is not easily affected by the external environment or electronic failures.

[0044] Furthermore, if Figure 4 As shown, in this embodiment, along the radial direction of the pump coupling 30, two layers of extrusion structures 341 are arranged between the inner side walls of the first through hole 311 and the second through hole and the rubber outer layer. When the rubber outer layer is worn and the iron core is exposed, the iron core comes into contact with one layer of the extrusion structure 341 and causes the extrusion structure 341 to deform, and the extrusion structure 341 can exert an extrusion force on the other layer of the extrusion structure 341. At this time, the other layer of the extrusion structure 341 can be extruded and deformed. After the other layer of the extrusion structure 341 is extruded and deformed, it can also send a warning message to the alarm device 343. In this way, the pump head coupling 31 can be double protected to avoid the alarm line 342 connected to one layer of the extrusion structure 341 from malfunctioning, resulting in the failure to send a signal to the alarm device 343 in time.

[0045] Specifically, continue to refer to Figure 4As shown, the pump coupling 30 also includes a power supply device 35, and the power supply device 35 can be a battery. In addition, the extruded structure 341 includes a first conductive layer 3411, a second conductive layer 3412 and a deformable supporting auxiliary strip 3413, wherein the first conductive layer 3411 and the second conductive layer 3412 are arranged at intervals and are located between the rubber outer layer and the inner side walls of the first through hole 311 and the second through hole, and the first conductive layer 3411 is connected to the second conductive layer 3412 through the deformable supporting auxiliary strip 3413. The alarm circuit 342 includes a first conductive wire 3421 and a second conductive wire 3422, one end of the first conductive wire 3421 is connected to the positive electrode of the power supply device 35, the other end of the first conductive wire 3421 is connected to the first conductive layer 3411, one end of the second conductive wire 3422 is connected to the negative electrode of the power supply device 35, and the other end of the second conductive wire 3422 is connected to the second conductive layer 3412 through the alarm device 343.

[0046] In this embodiment, the first conductive layer 3411 is disposed closer to the rubber outer layer than the second conductive layer 3412. For example, one layer of the extruded structure 341 is taken as an example for detailed description. Figure 5 As shown, after the rubber outer layer is worn and the iron core is exposed, the iron core contacts the first conductive layer 3411 and applies a squeezing force to the first conductive layer 3411, and the first conductive layer 3411 then transmits the squeezing force to the deformable supporting auxiliary strip 3413, so that the deformable supporting auxiliary strip 3413 is compressed and deformed, thereby shortening the distance between the first conductive layer 3411 and the second conductive layer 3412, so that at least part of the first conductive layer 3411 can contact the second conductive layer 3412, at this time the alarm circuit 342 is connected, the alarm device 343 obtains an electrical signal, and sends a warning signal to the outside world. Therefore, once the rubber outer layer is worn and the iron core is exposed, the first conductive layer 3411 and the second conductive layer 3412 can achieve a real-time response, helping the operator to replace the pin 33 in time, thereby effectively reducing the safety risk of the hydraulic pump during use.

[0047] refer to Figure 6As shown, the deformable supporting auxiliary strip 3413 includes a first strip member 34131 and a second strip member 34132, wherein both ends of the first strip member 34131 and the second strip member 34132 are respectively connected to the first conductive layer 3411 and the second conductive layer 3412, the first strip member 34131 and the second strip member 34132 are arranged at intervals, and the first strip member 34131 is provided with a first pin 3414, and the second strip member 34132 is provided with a second pin 3415, the first pin 3414 is connected to the other end of the first wire 3421, and the second pin 3415 is connected to the other end of the second wire 3422. Through the above arrangement, when the first strip 34131 and the second strip 34132 are in a compressed state, the first pin 3414 can abut against the second pin 3415, so that the number of conductive connection points between the first conductive layer 3411 and the second conductive layer 3412 increases, thereby effectively improving the sensitivity and efficiency of the alarm device 343 in receiving electrical signals.

[0048] Furthermore, in this embodiment, a plurality of first pins 3414 are arranged at intervals on the first strip 34131, and a plurality of second pins 3415 are arranged at intervals on the second strip 34132. The first pins 3414 and the second pins 3415 are alternately arranged in sequence, so as to further increase the sensitivity of the alarm device 343 in receiving electrical signals by increasing the number of the first pins 3414 and the second pins 3415.

[0049] Furthermore, along the circumferential direction of the rubber outer layer, a plurality of first strips 34131 and second strips 34132 are alternately arranged in sequence between the first conductive layer 3411 and the second conductive layer 3412, so that when any part of the entire rubber outer layer is worn, a signal can be sent to the outside world through the alarm device 343 in time, thereby helping to improve the comprehensiveness and reliability of monitoring.

[0050] Specifically, in this embodiment, the alarm device 343 includes a controller and an audible and visual alarm. The controller is connected to the extrusion structure 341 via an alarm line 342, and the audible and visual alarm is electrically connected to the controller, so that the alarm device 343 can remind the operator to replace the pin 33 by sound and light, thereby improving the corresponding efficiency of the operator. The alarm device 343 has a simple structure and is easy to produce and implement.

[0051] This embodiment also provides a hydraulic pump, which includes a pump head 10, a motor 20 and the above-mentioned pump coupling 30. Among them, the end of the pump shaft 11 of the pump head 10 is fixedly installed with a pump head coupling 31, and the end of the motor shaft 20 of the motor 20 is fixedly installed with a motor coupling 32, and the motor coupling 32 and the pump head coupling 31 are connected through the pump coupling 30. Since the above-mentioned pump coupling 30 is provided with an alarm device 34, when the rubber outer layer of the pin 33 is worn and the iron core is exposed, the alarm device 34 can contact the iron core and send a feedback signal to the outside world to automatically judge the wear condition of the pin 33, so as to ensure that the operator can disassemble and replace the worn pin 33 in a timely and effective manner, reduce the possibility of the pump head coupling 31 and the motor coupling 32 being worn and damaged, and then ensure the stability of the hydraulic pump operation and avoid production losses caused by sudden shutdown.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A pump coupling, comprising a pump head coupling (31), a motor coupling (32) and a pin (33), wherein a first through hole (311) is formed through the end surface of the pump head coupling (31), a second through hole is formed through the end surface of the motor coupling (32), and two ends of the pin (33) are detachably inserted into the first through hole (311) and the second through hole, respectively, and characterized in that: The pump coupling (30) also includes an alarm device (34), which is inserted into the first through hole (311) and the second through hole, and is clamped between the rubber outer layer of the pin (33) and the inner walls of the first through hole (311) and the second through hole. When the rubber outer layer of the pin (33) is worn, the alarm device (34) can contact the iron core of the pin (33) and can send a feedback signal to the outside world.

2. The pump coupling according to claim 1, characterized in that: The alarm device (34) comprises an extrusion structure (341), an alarm circuit (342) and an alarm device (343); the extrusion structure (341) is sandwiched between the rubber outer layer and the inner side walls of the first through hole (311) and the second through hole; the alarm device (343) is connected to the extrusion structure (341) via the alarm circuit (342); when the rubber outer layer is worn, the extrusion structure (341) comes into hard contact with the vibrating iron core and deforms; the alarm device (343) is capable of receiving deformation information of the extrusion structure (341) and sending the feedback signal.

3. The pump coupling according to claim 2, characterized in that: The pump coupling further comprises a power supply device (35); The extruded structure (341) comprises a first conductive layer (3411), a second conductive layer (3412) and a deformable supporting auxiliary strip (3413); the first conductive layer (3411) and the second conductive layer (3412) are arranged at intervals and are located between the rubber outer layer and the inner side walls of the first through hole (311) and the second through hole; the first conductive layer (3411) is connected to the second conductive layer (3412) through the deformable supporting auxiliary strip (3413); when the deformable supporting auxiliary strip (3413) is in a compressed state, at least part of the first conductive layer (3411) is in contact with the second conductive layer (3412); The alarm circuit (342) comprises a first wire (3421) and a second wire (3422), one end of the first wire (3421) is connected to the positive electrode of the power supply device (35), the other end of the first wire (3421) is connected to the first conductive layer (3411), one end of the second wire (3422) is connected to the negative electrode of the power supply device (35), and the other end of the second wire (3422) is connected to the second conductive layer (3412) via the alarm device (343).

4. The pump coupling according to claim 3, characterized in that: Along the radial direction of the pump coupling (30), two layers of the extrusion structure (341) are arranged between the inner side wall of the first through hole (311), the inner side wall of the second through hole and the rubber outer layer, and two adjacent layers of the extrusion structure (341) can produce hard contact so that the deformable supporting auxiliary strip (3413) in each layer of the extrusion structure (341) is in a compressed state.

5. The pump coupling according to claim 3, characterized in that: The deformable supporting auxiliary strip (3413) comprises a first strip-shaped piece (34131) and a second strip-shaped piece (34132), wherein the first strip-shaped piece (34131) and the second strip-shaped piece (34132) are both connected to the first conductive layer (3411) and the second conductive layer (3412), and the first strip-shaped piece (34131) and the second strip-shaped piece (34132) are arranged at intervals, and the first strip-shaped piece (34131) is provided with a first pin (34131). 14), a second pin (3415) is provided on the second strip (34132), the first pin (3414) is connected to the other end of the first wire (3421), and the second pin (3415) is connected to the other end of the second wire (3422), and when the first strip (34131) and the second strip (34132) are in a compressed state, the first pin (3414) can abut against the second pin (3415).

6. The pump coupling according to claim 5, characterized in that: A plurality of the first pins (3414) are arranged at intervals on the first strip (34131), and a plurality of the second pins (3415) are arranged at intervals on the second strip (34132), and the first pins (3414) and the second pins (3415) are arranged alternately in sequence.

7. The pump coupling according to claim 5, characterized in that: Along the circumferential direction of the rubber outer layer, a plurality of the first strip-shaped members (34131) and the second strip-shaped members (34132) are alternately arranged in sequence between the first conductive layer (3411) and the second conductive layer (3412).

8. The pump coupling according to claim 2, characterized in that: The alarm device (343) comprises a controller and an audible and visual alarm. The controller is connected to the extrusion structure (341) via the alarm line (342), and the audible and visual alarm is electrically connected to the controller.

9. A hydraulic pump, comprising a pump head (10) and a motor (20), characterized in that: The hydraulic pump further comprises a pump coupling (30) according to any one of claims 1 to 8, and the pump head (10) is connected to the motor (20) via the pump coupling (30).

10. The hydraulic pump according to claim 9, characterized in that It also includes a threaded fastener (40), the pump coupling (30) includes a pump head coupling (31) and a motor coupling (32), and the pump head coupling (31) is detachably connected to the motor coupling (32) via the threaded fastener (40).

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