Clamping device

Abstract

The utility model provides a clamping device which is used for taking out a valve body in a pump body and comprises a first clamping assembly, a second clamping assembly and a pin shaft. The first clamping assembly comprises a first hinge block and a first clamping section connected with the first hinge block, the first hinge block comprises two protruding blocks arranged in a spaced mode, and the two protruding blocks are each provided with an installation hole. The second clamping assembly comprises a second hinge block and a second clamping section connected with the second hinge block, a through hole is formed in the second hinge block, and the second hinge block is arranged between the two protruding blocks. The pin shaft is rotationally installed in the installation hole and the through hole, an included angle is formed between the first clamping section and the second clamping section, and the first clamping section and the second clamping section are far away from each other or close to each other so as to be used for loosening or clamping the valve body. The clamping device stretches into the position where the valve body is located, the first clamping section and the second clamping section are close to each other to clamp the valve body, and then the clamping device is lifted out of the pump body; the valve body can be taken out and installed quickly, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body clamping, in particular to a clamping device. Background Art

[0002] The plunger pump is a commonly used actuator in the field of oil drilling and production. It is mainly composed of a power end and a hydraulic end. The power end is similar to a crank slider mechanism. When the crankshaft rotates, it drives the eccentric crank to move, converting the rotational motion into reciprocating motion. The power end crank and the hydraulic end plunger are connected together through the connecting rod crosshead. The plunger reciprocates in the hydraulic end to increase and transport the liquid. The stroke frequency of the plunger pump generally reaches 200 to 300 n / min, and the speed is relatively high. The valve body assembly and the valve seat assembly form a one-way valve. Each cavity of the hydraulic end has two one-way valves, a suction valve and a discharge valve.

[0003] At present, as the power of the pump body becomes larger and larger, the displacement requirement becomes larger and larger, the specifications of the valve body and valve seat become larger and larger, and the valve body becomes heavier and heavier. In winter, in some cold areas, especially in the northeast region, the temperature is often dozens of degrees below zero, and the pump inspection work is extremely difficult. Therefore, a tool for removing the valve body is needed; in the prior art, the clamping part of the clamping device is fitted with both sides of the inner wall of the valve body, so that the clamping device is connected to the valve body, and then the valve body is lifted by the lifting ring on the clamping device. The operation steps of such a clamping device are too complicated, and other auxiliary equipment is required for auxiliary lifting, which increases the use cost.

[0004] Therefore, it is necessary to provide a clamping device to solve the above technical problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a clamping device, aiming to solve the technical problem of complicated operation of taking out the valve body of the plunger pump in the prior art.

[0006] The utility model provides a clamping device for clamping a valve body in a pump body, and the clamping device comprises:

[0007] A first clamping assembly, the first clamping assembly comprising a first hinge block and a first clamping section connected to the first hinge block, the first hinge block comprising two convex blocks arranged at intervals, and both of the two convex blocks are provided with mounting holes;

[0008] A second clamping assembly, the second clamping assembly comprising a second hinge block and a second clamping section connected to the second hinge block, the second hinge block is formed with a through hole, and the second hinge block is arranged between the two protrusions;

[0009] A pin shaft is rotatably mounted on the mounting hole and the through hole, and the first clamping section and the second clamping section move away from or close to each other to loosen or clamp the valve body.

[0010] In one embodiment, the first hinge block further includes a connecting block, a groove is formed between the two protrusions, and the second hinge block is disposed in the groove.

[0011] In one embodiment, the first clamping assembly further includes a first operating section, which is disposed on a side of the first hinge block away from the first clamping section, and the second clamping assembly further includes a second operating section, which is disposed on a side of the second hinge block away from the second clamping section, and the first operating section and the second operating section form an angle, and the first operating section and the second operating section can move closer to or farther from each other to drive the first clamping section and the second clamping section to move away from or closer to each other.

[0012] In one embodiment, the first operating section is equal to the second operating section in length, the first clamping section is equal to the second clamping section in length, and the first operating section is longer than the first clamping section.

[0013] In one embodiment, the first operating section includes a first connecting rod and two second connecting rods, the two ends of the first connecting rod are respectively connected to one end of the two second connecting rods, and the other ends of the two second connecting rods are connected to the first hinge block; the second operating section includes a third connecting rod and two fourth connecting rods, the two ends of the third connecting rod are respectively connected to one end of the two fourth connecting rods, and the other ends of the two fourth connecting rods are connected to the second hinge block.

[0014] In one embodiment, the second connecting rod includes a first sleeve and a second sleeve, one end of the first sleeve is connected to a side of the first hinge block away from the first operating section, and the second sleeve is slidably sleeved on the first sleeve.

[0015] In one embodiment, the first sleeve is formed with a first adjustment hole connected to the inner cavity of the first sleeve, and the second sleeve is formed with a second adjustment hole connected to the inner cavity of the second sleeve, and the clamping device also includes a threaded fastener, which passes through the first adjustment hole and is installed in the second adjustment hole to fix the first sleeve and the second sleeve; the number of the first adjustment holes is multiple, the number of the second adjustment holes is multiple, the number of the threaded fastener is at least one, and the threaded fastener passes through one of the first adjustment holes and is installed in one of the second adjustment holes.

[0016] In one embodiment, the outer surfaces of the first connecting rod and the third connecting rod are both provided with anti-slip pads.

[0017] In one embodiment, the first clamping section includes a first clamping rod and two second clamping rods, the two ends of the first clamping rod are respectively connected to one end of the two second clamping rods, and the first clamping rod is formed with a first clamping groove; the second clamping section includes a third clamping rod and two fourth clamping rods, the two ends of the third clamping rod are respectively connected to one end of the two fourth clamping rods, and the third clamping rod is formed with a second clamping groove.

[0018] In one embodiment, both the first clamping groove and the second clamping groove are arc grooves.

[0019] In the above scheme, the clamping device is used to remove the valve body from the pump body, and the clamping device includes a first clamping assembly, a second clamping assembly and a pin shaft; the first clamping assembly includes a first hinge block and a first clamping section connected to the first hinge block, the first hinge block includes two spaced-apart protrusions, and both protrusions are provided with mounting holes; the second clamping assembly includes a second hinge block and a second clamping section connected to the second hinge block, the second hinge block is formed with a through hole, and the second hinge block is arranged between the two protrusions; the pin shaft is rotatably installed in the mounting hole and the through hole, and the first clamping section and the second clamping section move away from or close to each other for loosening or clamping the valve body. When the valve body in the pump body needs to be taken out, the operator holds the first clamping assembly and the second clamping assembly in his hands, extends the clamping device to the position where the valve body is located, and then brings the first clamping section and the second clamping section closer to each other. At this time, the second hinge block and the first hinge block rotate around the pin shaft, so that the first clamping section and the second clamping section continue to approach each other. When the first clamping section and the second clamping section respectively abut against the two sides of the valve body, the valve body is clamped. Then, the clamped state of the valve body is maintained, the clamping device is lifted out of the pump body to the outside, and then the second hinge block and the first hinge block rotate in opposite directions around the pin shaft, the first clamping section and the second clamping section will move away from each other, so that the first clamping section and the second clamping section will not clamp the valve body, and the valve body will fall to the place where it needs to be placed. When putting the valve body into the pump body, the operator brings the first clamping section and the second clamping section closer to each other. At this time, the second hinge block and the first hinge block rotate around the pin shaft, so that the first clamping section and the second clamping section continue to approach each other. When the first clamping section and the second clamping section are respectively abutted against the two sides of the valve body, the valve body is clamped. Then, the valve body is kept in the clamped state, and the clamping device is extended into the pump body to put the valve body into the position where it needs to be placed in the pump body. Then, the first clamping section and the second clamping section are moved away from each other, the valve body is released, and then the clamping device is extended out of the pump body, thus completing the installation. Such a setting can quickly realize the removal and installation of the valve body, the operation is simple and convenient, and the operation efficiency is greatly improved. At the same time, no other auxiliary devices are required, reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of a clamping device according to one embodiment of the utility model from one perspective;

[0022] Figure 2 This is a schematic diagram of the overall structure of the clamping device of one embodiment of the utility model from another perspective.

[0023] Description of Figure Numbers:

[0024] Label name Label name 111 Grooves 11 First hinge block 121 First card slot 12 First clamping section 131 First connecting rod 13 First operation section 132a First sleeve 132 Second connecting rod 132c The first adjustment hole 132b Second sleeve 22 Second clamping section 132d Second adjustment hole 23 Second operation section 21 Second hinge block 232 Fourth connecting rod 221 Second card slot 100 Clamping device 231 The third connecting rod 123 Second clamping rod 3 Pin 223 Fourth clamping rod 122 First clamping rod 112 Bump 222 Third clamping rod

[0025] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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 scope of protection of the utility model.

[0027] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0028] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0031] The utility model provides a clamping device 100, which is used for clamping a valve body in a pump body. The clamping device 100 comprises:

[0032] A first clamping assembly, the first clamping assembly includes a first hinge block 11 and a first clamping section 12 connected to the first hinge block 11, the first hinge block 11 includes two protrusions 112 arranged at intervals, and both protrusions 112 are provided with mounting holes;

[0033] A second clamping assembly, the second clamping assembly includes a second hinge block 21 and a second clamping section 22 connected to the second hinge block 21, the second hinge block 21 is formed with a through hole, and the second hinge block 21 is disposed between the two protrusions 112;

[0034] The pin shaft 3 is rotatably mounted on the mounting hole and the through hole, and the first clamping section 12 and the second clamping section 22 are moved away from or close to each other to loosen or clamp the valve body. Specifically, when the valve body in the pump body needs to be taken out, the operator holds the first clamping assembly and the second clamping assembly in his hands, and then extends the clamping device 100 to the position where the valve body is located, and then makes the first clamping section 12 and the second clamping section 22 approach each other. At this time, the second hinge block 21 and the first hinge block 11 rotate around the pin shaft 3, so that the first clamping section 12 and the second clamping section 22 continue to approach each other. When the first clamping section 12 and the second clamping section 22 are respectively abutted against the two sides of the valve body, the valve body is clamped. Then, the valve body is kept clamped, and the clamping device 100 is lifted out of the pump body to the outside. Then, the second hinge block 21 and the first hinge block 11 rotate in opposite directions around the pin shaft 3, and the first clamping section 12 and the second clamping section 22 will move away from each other, so that the first clamping section 12 and the second clamping section 22 will not clamp the valve body, and the valve body will fall to the place where it needs to be placed. place; when the valve body needs to be placed in the pump body, the operator makes the first clamping section 12 and the second clamping section 22 approach each other, at this time the second hinge block 21 and the first hinge block 11 rotate around the pin shaft 3, so that the first clamping section 12 and the second clamping section 22 continue to approach each other, when the first clamping section 12 and the second clamping section 22 are respectively abutted against the two sides of the valve body, the valve body is clamped, and then the valve body is kept clamped, and the clamping device 100 is extended into the pump body to make the valve body placed in the position where it needs to be placed in the pump body, and then the first clamping section 12 and the second clamping section 22 are moved away from each other, the valve body is released, and then the clamping device 100 is extended out of the pump body, and the installation is completed; through such a setting, the valve body can be quickly removed and installed, the operation is simple and convenient, and the operation efficiency is greatly improved; at the same time, no other auxiliary devices are required, which reduces the cost of use.

[0035] In one embodiment, the first hinge block 11 further includes a connecting block, a groove 111 is formed between the two protrusions 112, and the second hinge block 21 is disposed in the groove 111. With such a configuration, it is only necessary to place the second hinge block 21 in the groove 111, and then rotate and install the pin 3 in the through hole and the mounting hole, so that the first hinge block 11, the second hinge block 21 and the pin 3 are installed, the installation operation is more convenient, and the working efficiency is further improved.

[0036] In one embodiment, the first clamping assembly further includes a first operating section 13, which is disposed on a side of the first hinge block 11 away from the first clamping section 12, and the second clamping assembly further includes a second operating section 23, which is disposed on a side of the second hinge block 21 away from the second clamping section 22, and the first operating section 13 and the second operating section 23 form an angle, and the first operating section 13 and the second operating section 23 can approach or move away from each other to drive the first clamping section 12 and the second clamping section 22 to move away from or approach each other. Specifically, when the valve body in the pump body needs to be taken out, the operator holds the first operating section 13 and the second operating section 23 in his hands, and then extends the clamping device 100 to the position where the valve body is located, and then moves the first operating section 13 and the second operating section 23 away from each other. At this time, the second hinge block 21 and the first hinge block 11 rotate around the pin shaft 3, so that the first clamping section 12 and the second clamping section 22 continue to approach each other. When the first clamping section 12 and the second clamping section 22 are respectively abutted against the two sides of the valve body, the valve body is clamped, and then the valve body is kept clamped, and the clamping device 100 is lifted out of the pump body to the outside; by setting the first operating section 13 and the second operating section 23, the operator can operate more conveniently when using the clamping device 100.

[0037] In one embodiment, the lengths of the first operating section 13 and the second operating section 23 are equal, the lengths of the first clamping section 12 and the second clamping section 22 are equal, and the length of the first operating section 13 is greater than the length of the first clamping section 12. The length of the first operating section 13 is set to be greater than the length of the first clamping section 12, so that the distance between the operator's hand-holding position and the fulcrum is greater than the distance between the clamping position and the fulcrum, which greatly reduces the force that the operator needs to apply, achieving a labor-saving effect.

[0038] In one embodiment, the first operating section 13 includes a first connecting rod 131 and two second connecting rods 132, and the two ends of the first connecting rod 131 are respectively connected to one end of the two second connecting rods 132, and the other ends of the two second connecting rods 132 are connected to the first hinge block 11; the second operating section 23 includes a third connecting rod 231 and two fourth connecting rods 232, and the two ends of the third connecting rod 231 are respectively connected to one end of the two fourth connecting rods 232, and the other ends of the two fourth connecting rods 232 are connected to the second hinge block 21. Specifically, when the valve body in the pump body needs to be taken out, the operator holds the first connecting rod 131 and the third connecting rod 231 in his hands, and then extends the clamping device 100 to the position where the valve body is located, and then moves the first connecting rod 131 and the third connecting rod 231 away from each other. At this time, the second hinge block 21 and the first hinge block 11 rotate around the pin shaft 3, so that the first clamping section 12 and the second clamping section 22 continue to approach each other. When the first clamping section 12 and the second clamping section 22 are respectively in contact with the two sides of the valve body, the valve body is clamped, and then the valve body is kept clamped, and the clamping device 100 is lifted out of the pump body to the outside; through such a setting, the operator can use it more smoothly and conveniently.

[0039] In one embodiment, the second connecting rod 132 includes a first sleeve 132a and a second sleeve 132b, one end of the first sleeve 132a is connected to the side of the first hinge block 11 away from the first operating section 13, and the second sleeve 132b is slidably sleeved on the first sleeve 132a. Specifically, when the position of the valve body in the pump body is too deep, the operator slides the second sleeve 132b upward in the inner cavity of the first sleeve 132a, so that the length of the entire clamping device 100 can be lengthened, so that the first clamping section 12 and the second clamping section 22 can clamp the valve body.

[0040] In one embodiment, a slider is formed on the inner wall of the first sleeve 132a, and a slide groove is formed on the outer surface of the second sleeve 132b. The slide groove extends along the length direction of the second sleeve 132b, and the slider is slidably installed in the slide groove. By providing the slide groove and the slider, the second sleeve 132b can play a guiding role when sliding, and can also prevent the second sleeve 132b from rotating in the first sleeve 132a.

[0041] In one embodiment, the first sleeve 132a is formed with a first adjustment hole 132c connected to the inner cavity of the first sleeve 132a, and the second sleeve 132b is formed with a second adjustment hole 132d connected to the inner cavity of the second sleeve 132b. The clamping device 100 also includes a threaded fastener, which passes through the first adjustment hole 132c and is installed in the second adjustment hole 132d to fix the first sleeve 132a and the second sleeve 132b; the number of the first adjustment holes 132c is multiple, the number of the second adjustment holes 132d is multiple, and there is at least one threaded fastener, which passes through one of the first adjustment holes 132c and is installed in one of the second adjustment holes 132d. By setting this structure, the first sleeve 132a can be firmly installed in the second sleeve 132b, and it is easy to disassemble, replace and repair; when the length needs to be adjusted, the second sleeve 132b is extended to a certain length, and the first adjustment hole 132c is made to correspond to the second adjustment hole 132d according to the required length, and then the first sleeve 132a and the second sleeve 132b are locked by threaded fasteners. At the same time, the adjustment distance can be obtained according to the spacing between each first adjustment hole 132c. By setting this structure, the required length can be adjusted.

[0042] In one embodiment, anti-skid pads are provided on the outer surfaces of the first connecting rod 131 and the third connecting rod 231. The anti-skid pads can prevent the hand from slipping and causing difficulty in removing the valve body, and can also prevent the operator's hands from contacting cold metal, protecting the operator from frostbite.

[0043] In one embodiment, the first clamping section 12 includes a first clamping rod 122 and two second clamping rods 123, the two ends of the first clamping rod 122 are respectively connected to one end of the two second clamping rods 123, and the first clamping rod 122 is formed with a first clamping groove 121; the second clamping section 22 includes a third clamping rod 222 and two fourth clamping rods 223, the two ends of the third clamping rod 222 are respectively connected to one end of the two fourth clamping rods 223, and the third clamping rod 222 is formed with a second clamping groove 221; the groove wall of the first clamping groove 121 and the groove wall of the second clamping groove 221 are both used to abut against the valve body, so that the valve body can be clamped. By providing the first clamping groove 121 and the second clamping groove 221, there is more contact with the valve body when clamping the valve body, and it can be clamped more firmly to prevent it from falling.

[0044] In one embodiment, the first clamping groove 121 and the second clamping groove 221 are both arc grooves. Generally speaking, the valve body is a cylindrical structure, and the first clamping groove 121 and the second clamping groove 221 are both set as arc grooves, so that the first clamping groove 121 and the second clamping groove 221 can adapt to valve bodies of different sizes, thereby increasing the applicable range of the clamping device 100.

[0045] Furthermore, the first clamping groove 121 and the second clamping groove 221 may be semicircular arcs, which can further expand the contact area between the first clamping groove 121 and the second clamping groove 221 and the valve body, and further improve the clamping ability.

[0046] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A clamping device for removing a valve body from a pump body, characterized in that: include: A first clamping assembly, the first clamping assembly comprising a first hinge block and a first clamping section connected to the first hinge block, the first hinge block comprising two convex blocks arranged at intervals, and both of the two convex blocks are provided with mounting holes; A second clamping assembly, the second clamping assembly comprising a second hinge block and a second clamping section connected to the second hinge block, the second hinge block is formed with a through hole, and the second hinge block is arranged between the two protrusions; A pin shaft is rotatably mounted on the mounting hole and the through hole, and the first clamping section and the second clamping section move away from or close to each other to loosen or clamp the valve body.

2. The clamping device according to claim 1, characterized in that: The first hinge block also includes a connecting block, a groove is formed between the two protrusions, and the second hinge block is arranged in the groove.

3. The clamping device according to claim 1, characterized in that: The first clamping assembly also includes a first operating section, which is arranged on a side of the first hinge block away from the first clamping section. The second clamping assembly also includes a second operating section, which is arranged on a side of the second hinge block away from the second clamping section. The first operating section and the second operating section form an angle, and the first operating section and the second operating section can approach or move away from each other to drive the first clamping section and the second clamping section to move away from or approach each other.

4. The clamping device according to claim 3, characterized in that: The first operating section is equal to the second operating section in length, the first clamping section is equal to the second clamping section in length, and the first operating section is longer than the first clamping section.

5. The clamping device according to claim 3, characterized in that: The first operating section includes a first connecting rod and two second connecting rods, the two ends of the first connecting rod are respectively connected to one end of the two second connecting rods, and the other ends of the two second connecting rods are connected to the first hinge block; the second operating section includes a third connecting rod and two fourth connecting rods, the two ends of the third connecting rod are respectively connected to one end of the two fourth connecting rods, and the other ends of the two fourth connecting rods are connected to the second hinge block.

6. The clamping device according to claim 5, characterized in that: The second connecting rod includes a first sleeve and a second sleeve, one end of the first sleeve is connected to a side of the first hinge block away from the first operating section, and the second sleeve is slidably sleeved on the first sleeve.

7. The clamping device according to claim 6, characterized in that: The first sleeve is formed with a first adjustment hole connected to the inner cavity of the first sleeve, and the second sleeve is formed with a second adjustment hole connected to the inner cavity of the second sleeve. The clamping device also includes a threaded fastener, which passes through the first adjustment hole and is installed in the second adjustment hole to fix the first sleeve and the second sleeve; the number of the first adjustment holes is multiple, the number of the second adjustment holes is multiple, and the number of the threaded fastener is at least one, and the threaded fastener passes through one of the first adjustment holes and is installed in one of the second adjustment holes.

8. The clamping device according to claim 5, characterized in that: The outer surfaces of the first connecting rod and the third connecting rod are both provided with anti-slip pads.

9. The clamping device according to any one of claims 1 to 8, characterized in that: The first clamping section includes a first clamping rod and two second clamping rods, the two ends of the first clamping rod are respectively connected to one end of the two second clamping rods, and the first clamping rod is formed with a first clamping groove; the second clamping section includes a third clamping rod and two fourth clamping rods, the two ends of the third clamping rod are respectively connected to one end of the two fourth clamping rods, and the third clamping rod is formed with a second clamping groove.

10. The clamping device according to claim 9, characterized in that: The first clamping groove and the second clamping groove are both arc grooves.

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