Connecting structure and plunger pump

[0037] The present application examples will be described in detail below with reference to the accompanying drawings.

[0038] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the term "" bottom "," inside "," outer ", etc. is based on the orientation or positional relationship shown in the drawings, only for It is convenient to describe the present application and simplification, rather than indicating or implying that the device or element referred to must have a specific orientation, and is constructed and operated in a particular orientation, so it is not understood to limit the limitations of the present application.

[0039] The term "first", "second" is used only for the purpose of describing, and cannot be understood as an indication or implies a relative importance or implicitting the number of techniques indicated. Thus, features with "first", "second" may be indicated or implicitly including one or more of this feature. In the description of this application, the meaning of "multiple" is two or more unless otherwise stated.

[0040] In the description of the present application, it is to be described in that, unless otherwise expressly specified and defined, the term "installation", "connected", "connection" should be broadly understood, for example, may be a fixed connection, or detachable Connect, or integrate; may be directly connected, or indirectly through the intermediate medium, which can be in communication inside the two elements. The specific meaning of the above terms in the present application can be understood in terms of one of ordinary skill in the art.

[0041] The embodiment of the present application provides a connection structure. The connection structure can be used to connect the first component and the second component. The first component and the second component can be a component or device product. For example, the components can be shaft parts, board components, and the like. The equipment product can be a pump, a motor, and the like. In the present application, only the first component is a pulley, and the second component is a plunger for example. The following specifically explains how to connect the rod and the plunger through the connection structure.

[0042] In the oil drilling, the oil produced by the drilling fluid is required to convey, while the plunger pump is an important oil and gas field fracturing device for transporting the fluid medium. At present, the current plunger pump cartridge connection structure is a key component of the connecting plunger pump dynamic end tie rod and the liquid end plunger, which plays an important role in the reliability of the plunger piston. However, the existing clamp connection structure is directly mounted on the plunger pump tie rod and the plunger, which is easy to cause the plunger and the wear of the lever, thereby problems with looseness.

[0043]As can be seen from the above, in order to avoid the wear of the plunger and the tie rod and the problem of looseness. Refer figure 1 The connection structure shows that at least two opposing clamp 100, the first connection assembly 200, the second connection assembly 300, and the locking member 400. At least two relative set of clamps 100 form a mounting space 500. It should be noted that the at least two relative set of clamps can be two, three or more than four or more. The specific number of the clamping member 100 is not specifically defined, and only two clamping members 100 will be described. Three or more folder 100 occupy a larger mounting position, it is inconvenient to install.

[0044] Based on the above foundation, reference figure 2 A portion of the first connection assembly 200 is located within the mounting space 500, and the other portion of the first connection assembly 200 is located outside the mounting space 500. A portion of the second connection assembly 300 is located within the mounting space 500, and the other portion of the second connection assembly 300 is located outside the mounting space 500.

[0045] Refer image 3 Another portion of the first connection assembly 200 is connected to the tie rod 600. The other portion of the second connection assembly 300 is connected to the plunger 700. The first connection assembly 200 and the second connection assembly 300 are in contact with the portion within the mounting space 500. And the locking member 400 is connected to the clamping member 100, and the lock member 400 is used to secure the clamping member 100 on the first connection assembly 200 and the second connection assembly 300. Thereby, the connection of the first connection assembly 200 to the second connection assembly 300 is implemented. Finally, the tie rod 600 is connected to the plunger 700. like Figure 4 Indicated image 3 Product explosion map.

[0046] The connection structure provided by the embodiment of the present application is provided. At the time of connecting rod 600 and plunger 700. Since at least two relative set of clamps 100 are disposed to form a mounting space 500. A portion of the first connection assembly 200 is placed in the mounting space 500, and the first connection assembly 200 and the second connection assembly 300 are in contact with the portion within the mounting space 500. Further, another portion of the first connection assembly 200 connects the rod 600. Another portion of the second connection assembly 300 connects the plunger 700. Next, the clamping member 100 is fixed to the first connection assembly 200 and the second connection assembly 300 by the locking member 400.

[0047] As can be seen from the above, the clamping member 100 is tightly abutting on the first connection assembly 200 and the second connection assembly 300. Thereby, the first connection assembly 200 is connected to the second connection assembly 300. The final achievement of the tie rod 600 and the plunger 700 connection is achieved. When disassembly is required, only the locking member 400 needs to be loosened, that is, the detaching of the lever 600 and the plunger 700 can be realized. In summary, since the pulling rod 600 is not directly connected to the holder 100, it can avoid the problem of wear and bumps between the lever 600 and the plunger 700 and the clamp 100, and a loose problem.

[0048] Based on this, some embodiments are applied in this application. In order to realize how the clamping member is fixed to the first connection assembly 200 and the second connection assembly 300. Refer Figure 5 The clip 100 shown in the surface of the clip 100 opens toward the surface of the first connection assembly 200 and the surface of the second connection assembly 300. The groove 110 can include opposing first side walls 120 and the second side wall 130.

[0049] Refer Image 6 The first side wall 120 shown is in contact with the first connection assembly 200. The second side wall 130 is in contact with the second connection assembly 300. In this way, a portion of the first connection assembly 200 and the second connection assembly 300 are defined within the groove 110, and the active space of the first connection assembly 200 and the second connection assembly 300 is reduced.

[0050] Based on the above foundation, reference Figure 7 The bottom surface of the first side wall 120 and the groove 110 is blunt angles α, the α may be 120 °, 130 ° or 150 °, and the present application does not specifically limit the specific angle of the α. The second side wall 130 and the bottom surface of the groove 110 are blunt angles β, and the β may be 120 °, 130 ° or 150 °, and the present application does not specifically limit the specific angle of the β. The α and β angles can be equal or not equal. Further, when α is an acute or right angle, the first connection assembly 200 and the second connection assembly 300 are prone to loose cases within the recess 110. The clamp 100 cannot fix the first connection assembly 200 and the second connection assembly 300.

[0051] Based on this, the first connection assembly 200 is abutting with the first side wall 120. The second connection assembly 300 is in contact with the second side wall 130. When the clamp member 100 is fixed to the first connection assembly 200 and the second connection assembly 300 by the lock member 400, a portion of the first connection assembly 200 and a portion of the second connection assembly 300 pass through the first side wall 120 and the second side. The wall 130 is gradually sliding into the groove 110. In this way, the first connection assembly 200 and the second connection assembly 300 are further lowered in the recess 110, so that the first connection assembly 200 and the second connection assembly 300 are difficult to relatively move. Improve the stability of the first connection assembly 200 and the second connection assembly 300.

[0052] Based on the above-mentioned basis, some embodiments of the present application. Refer Figure 8 The first connection assembly 200 shown may include a connecting block 210 and a first fastener 220.

[0053] Refer Figure 9 One end of the connection block 210 is located in the mounting space 500 and is in conjunction with the first side wall 120. The surface that is bonded to the first side wall 120 relative to the first side wall 120, in this case, to slide to the bottom surface of the recess 110, thereby limiting the movable space of the connection block 210. The other end of the connecting block 210 is located outside the mounting space 500. The first fastener 220 is used to fix the connecting block 210 on the tie rod 600. The first through hole 211 is opened in the connection block 210, and the first through hole 211 can be a step hole, and the first through hole 211 penetrates the connection block 210. One end of the first fastener 220 extends outward through the first through hole 211, and is connected to the tie rod 600, which is simple to have, and is convenient to install.

[0054] Further, in order to reduce the wear of the first fastener 220 and the connecting block 210 and to prevent the connection block 210 to rotate. Refer Figure 10 The first connection assembly 200 shown can also include a first pad 230 and a latch 240. like Figure 11 The first pad 230 is arranged on the first fastener 220, which effectively reduces the wear of the first fastener 220 and the connecting block 210, and improves the service life. One end of the latop 240 is inserted on one end of the connecting block 210 near the tie rod 600, and the other end is inserted on the tensive rod 600, and during the start of the plunger pump, it can effectively prevent the connection block 210 from rotating relative to the tensile rod 600.

[0055] In some embodiments of the present application. Refer Figure 12 The second connection assembly 300 shown may include a retaining ring 310 and a second fastener 320. Refer Figure 13 A portion of the retaining ring 310 is located within the recess 110, and the other is located outside the groove 110. The circumferential side surface of the retaining ring 310 is in conjunction with the second side wall 130. As can be seen from the above, the longitudinal wall 310 is bonded to the second side wall 130, in which case the retaining ring 310 is opposed to the second side wall 130, and the retaining ring 310 toward the groove 110 The bottom surface slides to limit the movable space of the retaining ring 310. And the second fastener 320 is used to abut the fixed retaining ring 310. One end of the second fastener 320 is located in the mounting space 500, and is in contact with one end of the connection block 210 located within the mounting space 500, so that the second fastener 320 is close to the connecting block 210, Thereby, the connecting block 210 is tightened with the retaining ring 310 and is subjected to the groove 110. The second through hole 311 is opened in the retaining ring 310, and the second through hole 311 can be a step hole, and the second through hole 311 penetrates the retaining ring 310. The other end of the second fastener 320 extends outwardly through the second through hole 311, and is connected to the plunger 700, and the second fastener 320 is closely abuting the inner wall of the second through hole 311. In this way, the relative fixation of the lever 600 and the plunger 700 is achieved. The connection block 210 is set to the retaining ring 310. In the bottom surface of the groove 110, the curved structure is concave so that the bottom surface of the groove 100 is more bonded to the retaining ring 310 to avoid looseness. Furthermore, the retaining ring 310 and the second fastener 320 can be a one-piece structure.

[0056] Based on the above-mentioned basis, some embodiments of the present application. Refer Figure 14 The connection block 210 shown can include a first shaft section 212 and a second shaft section 213, and the first shaft section 212 and the second shaft section 213 are coaxial settings, facilitating power transmission and facilitating processing and mounting.

[0057] Refer Figure 15 One end of the first shaft section 212 is located within the mounting space 500, and the other end is located outside the mounting space 500 and is connected to the tie rod 600. And the second axis section 213 is located within the installation space 500. One end of the second axis section 213 is coupled to the first shaft segment 212, and the first shaft section 212 is welded or integrally formed with the second shaft segment 213, and the present application does not specifically limit it. The second axis section 213 is in a tapered surface 214 at an outer surface of the first axial section 212, and is also conjunction with the first side wall 120, and it is convenient for the clamping member 100 when the lock member 400 is applied to the clamp 100. The second shaft segment 213 slides the second shaft section 213 to slide with the first side wall 120 through the tapered surface 214 to slide the second shaft section 213 to the bottom surface of the groove 110. In this way, the movable space of the second shaft section 213 is further limited to avoid relative loosening of the second shaft section 213 and the clamping member 100.

[0058] In this case, the clamp 100 generates a squeezing force to protect the second shaft segment 213 and the retaining ring 310 in the recess 110, thereby stronger against the second fastener 320 and the second axial section 213. Together, the stability of the second shaft section 213 is connected to the retaining ring 310 is improved. In this case, the tie rod 600 and the plunger 700 do not directly connect with the holding member 100, avoiding a larger wear of the tie rod 600 and the plunger 700, which is effective to connect the tie rod 600 to the plunger 700. The diameter of the first shaft section 212 is smaller than the diameter of the second shaft segment 213, facilitating the mounting of the second shaft section 213. The circumferential outer wall of the first shaft section 212 is spaced apart from the clamp 100. The circumferential wall of the second axis section 213 is spaced apart, facilitating the second shaft section 213 in the case where the second shaft section 213 is placed in the case of extrusion in the case of pressing the second shaft segment 213. This increases the mounting of the second shaft section 213 in this way.

[0059] Some embodiments of the present application. Refer Figure 16 The locking member 400 can include a third fastener 410 and a second gasket 420. The third fastener 410 can be a screw or bolt. One end of the third fastener 410 passes through the oppositely provided clamp 100 and the connecting block 210, the particular third fastener 410 passes through the second shaft section 213 and the clamping member 100 on the connecting block 210. The third fastener 410 is threaded with a clamping member 100 adjacent the end of the third fastener 410. And the second gasket sleeve 420 is disposed on the third fastener 410.

[0060] Based on the above foundation, reference Figure 17The first fastener 220 is detachably connected to the tie rod 600, facilitating the detachment of the lever 600 and the first shaft section 212. The second fastener 320 is detachably connected to the plunger 700, facilitating the second fastener 320 and the plug 700. Furthermore, the first fastener 220 and the second fastener 320 are screws, and their structures are simple and easy to install. Specifically, one end of the tie rod 600 is provided with a dipole hole 610 to the concave. The first shaft section 212 is located within one end of the tie rod 600 in the duct hole 610, which limits the first shaft segment 212 within the insertion hole 610 to facilitate the fixing of the first shaft section 212 and the tie rod 600. The bottom surface of the bore 610 is provided with a first threaded hole 620 and a jack 630. One end of the first fastener 220 is threaded with the first threaded hole 620 through the first through hole 211. The latch 240 is inserted into the jack 630 close to one end of the tie rod 600, and the latch 240 is effective to avoid rotation of the first shaft segment 212. One end of the plunger 700 is provided with a second threaded hole 710. One end of the second fastener 320 is threaded through the second through hole 311 and the second threaded hole 710, which is simple to have a simple structure.

[0061] In some embodimentsions of the present application. Based on the above foundation, reference Figure 18 The first connection assembly 200 shown can be connected to the plunger 700. The second connection assembly 300 can be coupled to the lever 600. The specific connection is the same as the above, and details will not be described here.

[0062] In the description of this specification, specific features, structures, materials, or features can be combined in any one or more embodiments or examples.

[0063] As described above, only the specific embodiments of the present application, but the scope of the present application is not limited thereto, any technicress, those skilled in the art, can easily think of change or replacement within the technical scope of the present application, It should be covered within the scope of protection of this application. Therefore, the scope of the claims should be based on the scope of protection of the claims.