Lossless dismounting and mounting device and method for pump shaft of long-shaft deep-well pump

Abstract

The invention provides a lossless dismounting and mounting device and method for a pump shaft of a long-shaft deep-well pump, and relates to the technical field of auxiliary tools for dismounting and mounting of the pump shaft, the lossless dismounting and mounting device comprises a first clamping sleeve, a second clamping sleeve, a first force application piece and a second force application piece, the first clamping sleeve and the second clamping sleeve are each provided with a clamping cavity, and the first clamping sleeve is suitable for being connected to the pump shaft in a sleeving mode; the second clamping sleeve is suitable for being connected to the coupler in a sleeving mode so that the peripheral wall of the pump shaft can be in surface contact with the clamping cavity of the first clamping sleeve, and the peripheral wall of the coupler can be in surface contact with the clamping cavity of the second clamping sleeve; the first force application piece is connected with the first clamping sleeve, and the second force application piece is connected with the second clamping sleeve, so that at least one of the first force application piece and the second force application piece provides acting force for disassembly and assembly between the pump shaft and the coupler. Disassembly and assembly force can be applied by means of the jackets reliably clamped on the pump shaft and the coupler, so that lossless disassembly and assembly operation on the pump shaft is achieved, the service life of the pump shaft and the service life of the rubber bearing are guaranteed, and the operation reliability of the long-shaft deep-well pump is improved.

Description

Technical Field

[0001] The invention relates to the technical field of auxiliary tooling for disassembling and assembling a pump shaft, and in particular to a non-destructive disassembling and assembling device and method for a pump shaft of a long-shaft deep-well pump. Background Art

[0002] When the hydropower plant unit is overhauled, the accumulated water in the turbine volute, tailwater pipe and water diversion pipe must be drained to the overhaul water collection well first, and then the overhaul drainage pump will drain the accumulated water in the water collection well to the downstream. Among them, the drainage pump is mostly a long-axis deep well pump. The long-axis deep well pump is mainly composed of a pump body, a water lifting pipe, a pump shaft, a pump shaft bracket and a motor, and the multi-stage segmented pump shaft is connected into a whole through a coupling. In order to ensure the normal operation of the overhaul drainage equipment, the long-axis deep well pump needs to be disassembled for overhaul.

[0003] In the related art, when disassembling and assembling the pump shaft and coupling of a long-shaft deep well pump, since the pump shaft and coupling are both cylindrical and there is no position for applying force with an open-end wrench, chain pliers or pipe pliers are often used to disassemble and assemble the pump shaft and coupling. However, the chain pliers and pipe pliers are likely to cause irreversible mechanical damage to the surface of the pump shaft during the force application process, thereby reducing the service life of the pump shaft. At the same time, the mechanical damage to the surface of the pump shaft will cause abnormal wear on the inner surface of the rubber bearing during the disassembly and assembly of the rubber bearing of the water pipe bracket. The abnormal wear of the rubber bearing will easily increase the swing of the pump shaft, intensify the vibration of the water pump and reduce its efficiency. If not handled in time, it may even cause the pump shaft to break, the water pump to be damaged, etc., which seriously threatens the safe and stable operation of the maintenance and drainage system of the hydropower plant. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of one aspect of the present invention proposes a non-destructive disassembly and assembly device for the pump shaft of a long-axis deep-well pump. The non-destructive disassembly and assembly device for the pump shaft of a long-axis deep-well pump can apply a disassembly and assembly force with the help of a sleeve that is reliably clamped on the pump shaft and the coupling to achieve non-destructive disassembly and assembly of the pump shaft, thereby ensuring the service life of the pump shaft and rubber bearings and improving the operating reliability of the long-axis deep-well pump.

[0006] Another aspect of the present invention provides a method for non-destructive disassembly and assembly of a pump shaft of a long-shaft deep well pump.

[0007] According to an embodiment of the present invention, a non-destructive disassembly and assembly device for a pump shaft of a long-shaft deep-well pump comprises a first jacket, a second jacket, a first force-applying member and a second force-applying member. The first jacket and the second jacket both have a clamping cavity. The first jacket is suitable for being sleeved on the pump shaft so that the outer peripheral wall of the pump shaft contacts the clamping cavity surface of the first jacket. The second jacket is suitable for being sleeved on the coupling so that the outer peripheral wall of the coupling contacts the clamping cavity surface of the second jacket. The first force-applying member is connected to the first jacket, and the second force-applying member is connected to the second jacket, so that at least one of the first force-applying member and the second force-applying member provides a force for the disassembly and assembly between the pump shaft and the coupling.

[0008] According to the non-destructive disassembly and assembly device for the pump shaft of a long-shaft deep-well pump according to the embodiment of the present invention, the first sleeve is sleeved on the pump shaft, and the second sleeve is sleeved on the coupling. Since the first sleeve and the pump shaft, as well as the second sleeve and the coupling are in surface contact, it can ensure that the first sleeve is reliably clamped on the pump shaft, and the second sleeve is reliably clamped on the coupling, so that the first force-applying member is connected to the first sleeve, and the second force-applying member is connected to the second sleeve. When the first force-applying member or the second force-applying member applies force, the applied force can act on the pump shaft and the coupling with the help of the first sleeve or the second sleeve, thereby realizing the disassembly and assembly between the pump shaft and the coupling, and effectively avoiding the wear problem of the outer peripheral wall of the pump shaft and the outer peripheral wall of the coupling during the disassembly and assembly process. Compared with the related art, the present invention can apply the disassembly and assembly force with the help of the sleeve that is reliably clamped on the pump shaft and the coupling, so as to realize the non-destructive disassembly and assembly operation of the pump shaft, ensure the service life of the pump shaft and the rubber bearing, and improve the operation reliability of the long-shaft deep-well pump.

[0009] In some embodiments, the first jacket and the second jacket each include at least two clamping parts, all of the clamping parts are arranged along the circumferential direction and together define the clamping cavity, and the outer contour line of the cross section of the clamping cavity is circular;

[0010] Any two adjacent clamping parts are connected via a locking piece.

[0011] In some embodiments, the locking member is one of a hexagon socket bolt and a countersunk screw, and among any two adjacent clamping parts, one of the clamping parts is provided with a first mounting hole, and the other clamping part is provided with a second mounting hole, and the locking member is fitted into the first mounting hole and is at least partially connected to the second mounting hole by thread, so as to fasten any two adjacent clamping parts.

[0012] In some embodiments, the first mounting hole is one of a countersunk hole and an internally threaded hole, and the second mounting hole is an internally threaded hole.

[0013] In some embodiments, the first jacket and the second jacket both extend along a first direction, the first direction being consistent with the extension direction of the pump shaft and being perpendicular to the circumferential direction;

[0014] There are a plurality of each of the first mounting holes and the second mounting holes and they are arranged at intervals along the first direction. There are a plurality of locking members and they correspond one-to-one to the first mounting holes and the second mounting holes.

[0015] In some embodiments, the first jacket and the second jacket are both provided with quick connectors, and the quick connectors are provided with mounting grooves;

[0016] The first force applying member and the second force applying member both include a first quick-insert and a first wrench connected to each other. The first quick-insert can be detachably connected to the mounting groove. The first wrench is suitable for applying a first force to the assembly and disassembly between the pump shaft and the coupling.

[0017] In some embodiments, the first force-applying member and the second force-applying member further include a second quick-insert and a second wrench connected to each other, wherein the second quick-insert can be detachably connected to the mounting groove, and the second wrench is suitable for applying a second force to the assembly and disassembly between the pump shaft and the coupling, and the second force is smaller than the first force.

[0018] In some embodiments, the disassembly and assembly device further includes a linkage assembly, which is connected between the second wrench of the first force-applying member and the second wrench of the second force-applying member so that the second wrench of the first force-applying member and the second wrench of the second force-applying member move synchronously.

[0019] In some embodiments, the second wrench is a ratchet wrench.

[0020] In some embodiments, the second wrench includes a connected ratchet head and a swing arm, the ratchet head includes a connected head and a reversing mechanism, the head is provided with a reversing knob and is connected to the second quick-connect, the reversing mechanism is transmission-connected to the reversing knob, so that the reversing knob can reverse the rotation direction of the head;

[0021] The linkage assembly includes a first slider, a first connecting rod, a second slider, a second connecting rod, a power piece and a bracket.

[0022] Wherein, the first sliding block is movably connected to the swing arm of the first force applying member along the extension direction of the corresponding swing arm, and the first end of the first connecting rod is pivotally connected to the first sliding block;

[0023] Wherein, the second sliding block is movably connected to the swing arm of the second force applying member along the extension direction of the corresponding swing arm, and the first end of the second connecting rod is pivotally connected to the second sliding block;

[0024] Wherein, the power member is connected to the second end of the first connecting rod and the second end of the second connecting rod through a transmission mechanism, and the transmission mechanism is installed on the bracket. The part of the swing arm away from the ratchet head is pivotally connected to the bracket, so that the power member drives the swing arm to swing back and forth relative to the bracket, and the ratchet head drives the first sleeve or the second sleeve through the second quick plug.

[0025] A method for non-destructive disassembly and assembly of a pump shaft of a long-shaft deep-well pump according to an embodiment of the present invention is based on the non-destructive disassembly and assembly device for a pump shaft of a long-shaft deep-well pump described in any of the above embodiments, and the method comprises the following steps:

[0026] The first jacket is sleeved on the pump shaft, and the second jacket is sleeved on the coupling;

[0027] The first force-applying member is connected to the first jacket, and the second force-applying member is connected to the second jacket, so that the pump shaft and the coupling can be assembled and disassembled by cooperating with the first force-applying member and the second force-applying member.

[0028] The technical advantages of the method for non-destructive disassembly and assembly of the pump shaft of a long-axis deep-well pump according to the embodiment of the present invention are the same as the technical advantages of the non-destructive disassembly and assembly device for the pump shaft of a long-axis deep-well pump described above, and will not be repeated here.

[0029] In some embodiments, there are multiple pump shafts and couplings. When all pump shafts and couplings are disassembled and assembled, the first sleeve is sleeved on any pump shaft, and the second sleeve is sleeved on the coupling adjacent to the any pump shaft. The first force-applying member and the second force-applying member cooperate to disassemble and assemble the any pump shaft and the coupling, so that one of the first sleeve and the second sleeve is stationary and the other is sleeved on the next pump shaft or the next coupling. The first force-applying member and the second force-applying member continue to complete the disassembly and assembly, and the first sleeve and the second sleeve are shifted alternately, and so on, until all pump shafts and all couplings are disassembled and assembled.

[0030] In some embodiments, the working mode of the disassembly and assembly device is determined according to the disassembly and assembly requirements between the pump shaft and the coupling, wherein:

[0031] When disassembling the pump shaft and the coupling, the first quick connector is connected to the mounting groove, one of the first wrench of the first force-applying member and the first wrench of the second force-applying member is kept stationary, and the other one is used to apply force to loosen the pump shaft and the coupling, remove the first quick connector, install the second quick connector in the mounting groove, and simultaneously screw the second wrench of the first force-applying member and the second wrench of the second force-applying member to complete the disassembly between the pump shaft and the coupling;

[0032] When assembling the pump shaft and the coupling, the second quick connector is connected to the mounting groove, and the second wrench of the first force-applying member and the second wrench of the second force-applying member are screwed at the same time to pre-tighten the pump shaft and the coupling, and the second quick connector is removed, and the first quick connector is connected to the mounting groove, so that one of the first wrench of the first force-applying member and the first wrench of the second force-applying member is kept stationary, and force is applied by the other to tighten the pump shaft and the coupling.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The present invention is a schematic diagram of the connection structure between a non-destructive disassembly and assembly device for a long-shaft deep-well pump shaft and a pump shaft and a coupling according to an embodiment of the present invention.

[0035] Figure 2 It is a schematic diagram of the main structure of the first jacket in the non-destructive disassembly and assembly device for the pump shaft of a long-shaft deep-well pump according to an embodiment of the present invention.

[0036] Figure 3 The figure is a schematic top view of the structure of the first jacket in the non-destructive disassembly and assembly device for the pump shaft of a long-shaft deep-well pump according to an embodiment of the present invention.

[0037] Figure 4 It is a structural schematic diagram of a first quick-insert and a first wrench in a non-destructive disassembly and assembly device for a pump shaft of a long-shaft deep-well pump according to an embodiment of the present invention.

[0038] Figure 5 It is a schematic diagram of the connection structure between a non-destructive disassembly and assembly device for a long-shaft deep-well pump shaft and a pump shaft and a coupling according to another embodiment of the present invention.

[0039] Figure 6 It is a schematic diagram of the connection structure of the second quick connector, the ratchet head and the reversing knob in the non-destructive disassembly and assembly device for the pump shaft of a long-shaft deep-well pump according to an embodiment of the present invention.

[0040] Figure 7 It is a schematic diagram of the connection structure between the second wrench, the first slider, the first connecting rod, the second bevel gear and the bracket in the non-destructive disassembly and assembly device of the pump shaft of a long-shaft deep-well pump according to an embodiment of the present invention.

[0041] Figure 8 The present invention is a flowchart of a method for non-destructive disassembly and assembly of a long-shaft deep-well pump shaft according to an embodiment of the present invention.

[0042] Figure numerals: 1. first jacket, 11. clamping cavity, 12. clamping portion, 121. first mounting hole, 122. second mounting hole, 13. quick connector, 131. mounting groove, 2. second jacket, 3. first force-applying member, 31. first quick plug, 32. first wrench, 33. second quick plug, 34. second wrench, 341. ratchet head, 342. swing arm, 343. reversing knob, 4. second force-applying member, 5. pump shaft, 6. coupling, 7. linkage assembly, 71. first slider, 72. first connecting rod, 73. second slider, 74. second connecting rod, 75. bracket, 76. transmission mechanism, 761. first bevel gear, 762. second bevel gear, 763. third bevel gear. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0044] like Figure 1 and Figure 3 As shown, a non-destructive disassembly and assembly device for a long-axis deep-well pump shaft according to an embodiment of the present invention comprises a first jacket 1, a second jacket 2, a first force member 3 and a second force member 4. The first jacket 1 and the second jacket 2 both have a clamping cavity 11. The first jacket 1 is suitable for being sleeved on the pump shaft 5 so that the outer peripheral wall of the pump shaft 5 is in surface contact with the clamping cavity 11 of the first jacket 1. The second jacket 2 is suitable for being sleeved on the coupling 6 so that the outer peripheral wall of the coupling 6 is in surface contact with the clamping cavity 11 of the second jacket 2. The first force member 3 is connected to the first jacket 1, and the second force member 4 is connected to the second jacket 2, so that at least one of the first force member 3 and the second force member 4 can provide a force for the disassembly and assembly between the pump shaft 5 and the coupling 6.

[0045] It can be understood that, according to the non-destructive disassembly and assembly device for the pump shaft of a long-shaft deep-well pump according to the embodiment of the present invention, the first jacket 1 is sleeved on the pump shaft 5, and the second jacket 2 is sleeved on the coupling 6. Since the first jacket 1 and the pump shaft 5, and the second jacket 2 and the coupling 6 are in surface contact, it is possible to ensure that the first jacket 1 is reliably clamped on the pump shaft 5, and the second jacket 2 is reliably clamped on the coupling 6. The first force-applying member 3 is connected to the first jacket 1, and the second force-applying member 4 is connected to the second jacket 2. When force is applied, the applied force can be made to act on the pump shaft 5 and the coupling 6 by means of the first jacket 1 or the second jacket 2, thereby realizing the disassembly and assembly between the pump shaft 5 and the coupling 6, and effectively avoiding the wear problem of the outer peripheral wall of the pump shaft 5 and the outer peripheral wall of the coupling 6 during the disassembly and assembly process. Compared with the related art, the present invention can apply the disassembly and assembly force by means of the jacket that is reliably clamped on the pump shaft 5 and the coupling 6, so as to realize the non-destructive disassembly and assembly of the pump shaft 5, ensure the service life of the pump shaft 5 and the rubber bearing, and improve the operation reliability of the long-axis deep well pump.

[0046] Specifically, the first jacket 1 and the second jacket 2 are not limited to stainless steel jackets to ensure the service life of the first jacket 1 and the second jacket 2, and are not prone to deformation, thereby ensuring clamping reliability. The first jacket 1 and the second jacket 2 can be hollow tubular.

[0047] It should be noted that in the related art, chain pliers or pipe pliers are used to disassemble and assemble the pump shaft 5 and the coupling 6. The pump shaft 5 or the coupling 6 is often clamped by a chain, and then the pliers handle part applies force for disassembly and assembly. During this process, the chain is easy to slide on the pump shaft 5 or the coupling 6, and the chain is in line contact with the surface of the pump shaft 5 (i.e., the outer peripheral wall of the pump shaft 5) or the surface of the coupling 6 (i.e., the outer peripheral wall of the coupling 6), so it is easy to cause mechanical damage to the surface of the pump shaft 5 or the surface of the coupling 6. In the present invention, the first jacket 1 is clamped on the surface of the pump shaft 5, and the second jacket 2 is clamped on the surface of the coupling 6, and the first jacket 1 is in surface contact with the pump shaft 5, and the second jacket 2 is in surface contact with the coupling 6, so the contact area between the first jacket 1 and the pump shaft 5, and between the second jacket 2 and the coupling 6 is increased, so that when the first force applying member 3 or the second force applying member 4 applies force to the pump shaft 5 and the coupling 6, non-destructive disassembly and assembly can be achieved.

[0048] like Figure 2 and Figure 3 As shown, in some embodiments, the first jacket 1 and the second jacket 2 each include at least two clamping portions 12, all the clamping portions 12 are arranged along the circumferential direction and together define a clamping cavity 11, and the outer contour line of the cross section of the clamping cavity 11 is circular.

[0049] Any two adjacent clamping parts 12 are connected via a locking member.

[0050] It can be understood that the first jacket 1 and the second jacket 2 are both designed to be composed of at least two clamping parts 12, and any two adjacent clamping parts 12 are connected by a locking member, so that the first jacket 1 and the pump shaft 5, and the second jacket 2 and the coupling 6 can be detachably connected, so that the first jacket 1 and the second jacket 2 can be alternately used for the sequential disassembly and assembly of multiple sections of the pump shaft 5 in the same long-axis deep well pump shaft 5. The overall structure is simple, the disassembly and assembly operation is convenient, the versatility is strong, and the cost is low.

[0051] Preferably, the first jacket 1 and the second jacket 2 each include two clamping parts 12, and in the projection plane parallel to the circumferential direction, the outer contour of the projection of the first jacket 1 and the outer contour of the projection of the second jacket 2 are both annular, wherein the outer contours of the projections of the two clamping parts 12 can be semi-annular (i.e., half of a full ring) to facilitate production and processing, further simplify the overall structure of the disassembly and assembly device, and save production costs.

[0052] Specifically, the circumferential direction is the circumferential direction of the pump shaft 5 and the circumferential direction of the coupling 6. Any two adjacent clamping parts 12 are detachably connected to the locking member, so that when one of the aforementioned components is damaged, only the corresponding replacement is performed to ensure the service life of each component and save costs to a certain extent.

[0053] like Figure 2 and Figure 3 As shown, in some embodiments, the locking member is one of a hexagon socket bolt and a countersunk screw (not shown in the figure), and among any two adjacent clamping parts 12, one clamping part 12 is provided with a first mounting hole 121, and the other clamping part 12 is provided with a second mounting hole 122, and the locking member is fitted into the first mounting hole 121 and is at least partially threadedly connected to the second mounting hole 122, so as to fasten any two adjacent clamping parts 12.

[0054] It is understandable that the locking member is designed as a hexagon socket bolt or a countersunk screw, which is simple and practical, and facilitates the rapid tightening or disassembly between the clamping parts 12. At the same time, the locking member is accommodated in the two clamping parts 12, which also reduces the erosion of the locking member by the external environment to a certain extent.

[0055] Specifically, the locking member is not limited to the hexagon socket bolt and the countersunk screw. Preferably, the locking member is a hexagon socket bolt, which has a better fastening effect. When the two clamping parts 12 are assembled, the first mounting hole 121 and the second mounting hole 122 can be coaxial. To ensure a reliable connection between the two clamping parts 12, there are two first mounting holes 121 and two second mounting holes 122, which correspond to each other. The two first mounting holes 121 are respectively arranged at both ends of the corresponding clamping part 12.

[0056] Preferably, the first mounting hole 121 is one of a countersunk hole (ie, a countersunk through hole) and an internal threaded hole, and the second mounting hole 122 is an internal threaded hole to facilitate processing and ensure that any two adjacent clamping parts 12 can be reliably fastened by a locking member.

[0057] like Figure 2 and Figure 3 As shown, in some embodiments, the first jacket 1 and the second jacket 2 both extend along a first direction, which is consistent with the extension direction of the pump shaft 5 and perpendicular to the circumferential direction, that is, the first direction is consistent with the axial direction of the pump shaft 5. Since the axial direction of the pump shaft 5 is the same as the axial direction of the coupling 6, the first direction can also be said to be the axial direction of the coupling 6. The first direction can be the up and down direction in the figure.

[0058] There are a plurality of each of the first mounting holes 121 and the second mounting holes 122 , which are arranged at intervals along the first direction. There are a plurality of locking members, which correspond to the first mounting holes 121 and the second mounting holes 122 one by one.

[0059] It can be understood that, by cooperating with multiple first mounting holes 121, multiple second mounting holes 122 and multiple locking members, the reliable clamping of the first jacket 1 on the pump shaft 5 and the second jacket 2 on the coupling 6 is further ensured, so as to avoid the influence of the sliding of the first jacket 1 or the second jacket 2 during the later force application process on the non-destructive disassembly and assembly operation.

[0060] like Figure 1 and Figure 4 As shown, in some embodiments, the first jacket 1 and the second jacket 2 are both provided with a quick connector 13 , and the quick connector 13 is provided with a mounting groove 131 .

[0061] The first force applying member 3 and the second force applying member 4 both include a first quick plug 31 and a first wrench 32 connected to each other, wherein the first quick plug 31 is not limited to a tenon, and the first quick plug 31 can be located below the first wrench 32. The first quick plug 31 can be detachably connected to the mounting groove 131, and the first wrench 32 is suitable for applying a first force to the disassembly and assembly between the pump shaft 5 and the coupling 6.

[0062] It is understandable that the quick connector 13 cooperates with the first quick connector 31 to realize quick disassembly and assembly between the first force-applying member 3 and the first jacket 1 , and between the second force-applying member 4 and the second jacket 2 , thereby improving the disassembly and assembly efficiency of the long-axis deep well pump shaft 5 .

[0063] like Figure 5 As shown, in some embodiments, the first force applying member 3 and the second force applying member 4 further include a second quick plug 33 and a second wrench 34 connected to each other, wherein the second quick plug 33 is not limited to a tenon, and the second quick plug 33 can be located below the second wrench 34. The second quick plug 33 can be detachably connected to the mounting groove 131, and the second wrench 34 is suitable for applying a second force to the disassembly and assembly between the pump shaft 5 and the coupling 6, and the second force is smaller than the first force.

[0064] It is understandable that the quick connector 13 cooperates with the second quick connector 33 to realize quick disassembly and assembly between the first force applying member 3 and the first jacket 1, and between the second force applying member 4 and the second jacket 2, thereby improving the disassembly and assembly efficiency of the long-axis deep well pump shaft 5.

[0065] It should be noted that the first wrench 32 can be used to unload the force between the pump shaft 5 and the coupling 6 (i.e., loosen both) when disassembling, or to apply force (i.e., tighten both) when assembling the pump shaft 5 and the coupling 6; and the second wrench 34 is used for quick disassembly when disassembling, or for pre-tightening when assembling the pump shaft 5 and the coupling 6.

[0066] like Figure 5As shown, in some embodiments, the disassembly and assembly device also includes a linkage assembly 7, which is connected between the second wrench 34 of the first force member 3 and the second wrench 34 of the second force member 4, so that the second wrench 34 of the first force member 3 and the second wrench 34 of the second force member 4 can move synchronously.

[0067] It can be understood that the linkage assembly 7 can enable the first force applying member 3 and the second force applying member 4 to act simultaneously, further improving the efficiency of the construction personnel in disassembling and assembling the long-axis deep well pump shaft 5, and also allowing the construction personnel to save more effort.

[0068] Preferably, the second wrench 34 is a ratchet wrench.

[0069] like Figures 5 to 7 As shown, in some embodiments, the second wrench 34 includes a connected ratchet head 341 and a swing arm 342, the ratchet head 341 includes a connected head and a reversing mechanism (not shown in the figure), the head is provided with a reversing knob 343 and is connected to the second quick insert 33, and the reversing mechanism is transmission-connected to the reversing knob 343 so that the reversing knob 343 reverses the rotation direction of the head.

[0070] The linkage assembly 7 includes a first slider 71 , a first connecting rod 72 , a second slider 73 , a second connecting rod 74 , a power member (not shown in the figure) and a bracket 75 .

[0071] Among them, the first slider 71 is movably connected to the swing arm 342 of the first force applying member 3 along the extension direction of the corresponding swing arm 342, and the first end of the first connecting rod 72 is pivotally connected to the first slider 71, that is, the first end of the first connecting rod 72 is hinged to the first slider 71.

[0072] Among them, the second slider 73 is movably connected to the swing arm 342 of the second force applying member 4 along the extension direction of the corresponding swing arm 342, and the first end of the second connecting rod 74 is pivotally connected to the second slider 73, that is, the first end of the second connecting rod 74 is hinged to the second slider 73.

[0073] Among them, the power piece is connected to the second end of the first connecting rod 72 and the second end of the second connecting rod 74 through a transmission mechanism 76, and the transmission mechanism 76 is installed on the bracket 75. The part of the swing arm 342 away from the ratchet head 341 is pivotally connected to the bracket 75, that is, the swing arm 342 and the bracket 75 are connected by a pin shaft, so that the power piece drives the swing arm 342 to swing back and forth relative to the bracket 75, and the ratchet head 341 drives the pump shaft 5 or the coupling 6 to rotate through the second quick plug 33.

[0074] It can be understood that after the first wrench 32 unloads the pump shaft 5 and the coupling 6, when the two need to be disassembled, the second quick insert 33 can be inserted into the installation groove 131, and the linkage assembly 7 can be installed between the first force-applying member 3 and the second force-applying member 4. Since the linkage assembly 7 causes the swing arm 342 of the first force-applying member 3 and the swing arm 342 of the second force-applying member 4 to move in opposite directions, it is necessary to adjust the ratchet head 341 of the first force-applying member 3 or the ratchet head 341 of the second force-applying member 4. The rotation direction of one is adjusted to ensure that the first force-applying member 3 and the second force-applying member 4 apply force in the same direction to complete the disassembly between the pump shaft 5 and the coupling 6. Similarly, when the pump shaft 5 and the coupling 6 need to be assembled, the first force-applying member 3 and the second force-applying member 4 still need to apply pre-tightening force in the same direction to just tighten the pump shaft 5 and the coupling 6, and then remove the second quick-insert 33, insert the first quick-insert 31 into the installation groove 131, and use the first wrench 32 to tighten the pump shaft 5 and the coupling 6 in place.

[0075] Specifically, the ratchet head 341 may be a ratchet head 341 of a ratchet wrench in the prior art in the art. A slide groove may be provided on the swing arm 342, and the slide groove may extend along the extension direction of the swing arm 342. The first slider 71 and the second slider 73 are both slidably connected to the slide groove. The power member may not be limited to an electric wrench with adjustable speed, and the specific structure and working principle of the electric wrench may adopt the prior art in the art, which will not be elaborated in detail here. The transmission mechanism 76 may include a first bevel gear 761, a second bevel gear 762 and a third bevel gear 763, wherein the first bevel gear 761 is connected to the power output end of the power member, that is, the power member can drive the first bevel gear 761 to rotate, the second bevel gear 762 and the third bevel gear 763 are both externally meshed with the first bevel gear 761 to rotate with the first bevel gear 761, and the second bevel gear 762 and the third bevel gear 763 are both pivotally mounted on the bracket 75, and the second end of the first connecting rod 72 is coaxially connected to the second bevel gear 762, and the second end of the second connecting rod 74 is coaxially connected to the third bevel gear 763, so that the second bevel gear 762 drives the first connecting rod 72 to rotate, and the third bevel gear 763 drives the second connecting rod 74 to rotate, thereby pulling the slider (the first slider 71 and the second slider 73) to slide on the swing arm 342, so that the swing arm 342 swings back and forth around the second bevel gear 762 or the third bevel gear 763.

[0076] Therefore, compared with the related art, the present invention has the following technical effects:

[0077] 1) The present invention is made of stainless steel, which is not prone to deformation and has a long service life;

[0078] 2) The present invention can realize non-destructive disassembly and assembly of the pump shaft of the long-axis deep well pump, so as to avoid abnormal wear of the pump shaft 5 and the inner surface of the rubber bearing;

[0079] 3) The present invention adopts the linkage assembly 7 to enable construction workers to carry out the disassembly and assembly of the pump shaft more labor-saving and quickly;

[0080] 4) The present invention has a simple structure, low cost, is compact and light, and is easy to use.

[0081] like Figure 8 As shown, a non-destructive disassembly method of a long-axis deep-well pump shaft 5 according to an embodiment of the present invention is based on a non-destructive disassembly device for a long-axis deep-well pump shaft according to any of the above embodiments, and the method comprises the following steps:

[0082] Step S1, sleeve the first jacket 1 on the pump shaft 5, and sleeve the second jacket 2 on the coupling 6, that is, fix the two clamping parts 12 on the pump shaft 5 or the coupling 6 through a locking member;

[0083] Step S2, connecting the first force-applying member 3 to the first jacket 1, and connecting the second force-applying member 4 to the second jacket 2, so that the first force-applying member 3 and the second force-applying member 4 cooperate to disassemble and assemble the pump shaft 5 and the coupling 6.

[0084] The technical advantages of the method for non-destructive disassembly and assembly of the pump shaft 5 of the long-axis deep-well pump according to the embodiment of the present invention are the same as the technical advantages of the non-destructive disassembly and assembly device for the pump shaft of the long-axis deep-well pump described above, and will not be repeated here.

[0085] In some embodiments, there are multiple pump shafts 5 and couplings 6. When all pump shafts 5 and couplings 6 are disassembled and assembled, the first jacket 1 is sleeved on any pump shaft 5, and the second jacket 2 is sleeved on the coupling 6 adjacent to any pump shaft 5. The first force member 3 and the second force member 4 cooperate to disassemble and assemble any pump shaft 5 and coupling 6, so that one of the first jacket 1 and the second jacket 2 is stationary, and the other is sleeved on the next pump shaft 5 or the next coupling 6. The first force member 3 and the second force member 4 continue to complete the disassembly and assembly, and the first jacket 1 and the second jacket 2 are shifted alternately, and so on, until all pump shafts 5 and all couplings 6 are disassembled and assembled.

[0086] In some embodiments, the working mode of the disassembly and assembly device is determined according to the disassembly and assembly requirements between the pump shaft 5 and the coupling 6, wherein:

[0087] When disassembling the pump shaft 5 and the coupling 6, the first quick plug 31 is connected to the installation groove 131, and one of the first wrench 32 of the first force member 3 and the first wrench 32 of the second force member 4 is kept stationary, and the other one is used to apply force, and the pump shaft 5 and the coupling 6 are loosened, and the first quick plug 31 is removed, and the second quick plug 33 is installed in the installation groove 131, and the second wrench 34 of the first force member 3 and the second wrench 34 of the second force member 4 are screwed at the same time, and the disassembly between the pump shaft 5 and the coupling 6 is completed;

[0088] When assembling the pump shaft 5 and the coupling 6, connect the second quick insert 33 with the mounting groove 131, and at the same time, screw the second wrench 34 of the first force member 3 and the second wrench 34 of the second force member 4 to pre-lock the pump shaft 5 and the coupling 6, remove the second quick insert 33, and connect the first quick insert 31 with the mounting groove 131, so that one of the first wrench 32 of the first force member 3 and the first wrench 32 of the second force member 4 is stationary, and the other one applies force to tighten the pump shaft 5 and the coupling 6.

[0089] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0090] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "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.

[0091] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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.

[0092] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0093] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0094] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A non-destructive disassembly and assembly device for a long-axis deep-well pump shaft, characterized in that: include: A first jacket and a second jacket, wherein the first jacket and the second jacket both have a clamping cavity, the first jacket is suitable for being sleeved on the pump shaft so that the outer peripheral wall of the pump shaft contacts the clamping cavity surface of the first jacket, and the second jacket is suitable for being sleeved on the coupling so that the outer peripheral wall of the coupling contacts the clamping cavity surface of the second jacket; as well as A first force-applying member and a second force-applying member, wherein the first force-applying member is connected to the first jacket, and the second force-applying member is connected to the second jacket, so that at least one of the first force-applying member and the second force-applying member provides a force for the disassembly and assembly between the pump shaft and the coupling.

2. The non-destructive disassembly and assembly device for the long-axis deep-well pump shaft according to claim 1 is characterized in that: The first jacket and the second jacket each include at least two clamping parts, all of the clamping parts are arranged along the circumferential direction and together define the clamping cavity, and the outer contour line of the cross section of the clamping cavity is circular; Any two adjacent clamping parts are connected via a locking piece.

3. The non-destructive disassembly and assembly device for the long-axis deep-well pump shaft according to claim 2, characterized in that: The locking member is one of a hexagon socket bolt and a countersunk screw, and among any two adjacent clamping parts, one of the clamping parts is provided with a first mounting hole, and the other clamping part is provided with a second mounting hole, and the locking member is fitted into the first mounting hole and at least partially connected to the second mounting hole by thread, so as to fasten any two adjacent clamping parts; And / or, the first mounting hole is one of a countersunk hole and an internally threaded hole, and the second mounting hole is an internally threaded hole.

4. The non-destructive disassembly and assembly device for the long-axis deep-well pump shaft according to claim 3, characterized in that: The first jacket and the second jacket both extend along a first direction, the first direction being consistent with an extension direction of the pump shaft and being perpendicular to the circumferential direction; There are a plurality of each of the first mounting holes and the second mounting holes and they are arranged at intervals along the first direction. There are a plurality of locking members and they correspond one-to-one to the first mounting holes and the second mounting holes.

5. The non-destructive disassembly and assembly device for the long-axis deep-well pump shaft according to any one of claims 1 to 4, characterized in that: The first jacket and the second jacket are both provided with quick connectors, and the quick connectors are provided with mounting grooves; The first force applying member and the second force applying member both include a first quick-insert and a first wrench connected to each other. The first quick-insert can be detachably connected to the mounting groove. The first wrench is suitable for applying a first force to the assembly and disassembly between the pump shaft and the coupling.

6. The non-destructive disassembly and assembly device for the long-axis deep-well pump shaft according to claim 5, characterized in that: The first force-applying member and the second force-applying member further include a second quick-insert and a second wrench connected to each other, wherein the second quick-insert can be detachably connected to the mounting groove, and the second wrench is suitable for applying a second force to the assembly and disassembly between the pump shaft and the coupling, and the second force is smaller than the first force.

7. The non-destructive disassembly and assembly device for the long-axis deep-well pump shaft according to claim 6, characterized in that: The disassembly and assembly device further comprises a linkage assembly, wherein the linkage assembly is connected between the second wrench of the first force-applying member and the second wrench of the second force-applying member, so that the second wrench of the first force-applying member and the second wrench of the second force-applying member can act synchronously; And / or, the second wrench is a ratchet wrench.

8. The non-destructive disassembly and assembly device for the long-axis deep-well pump shaft according to claim 7, characterized in that: The second wrench comprises a connected ratchet head and a swing arm, the ratchet head comprises a connected head and a reversing mechanism, the head is provided with a reversing knob and is connected to the second quick-connect, the reversing mechanism is transmission-connected to the reversing knob, so that the reversing knob can reverse the rotation direction of the head; The linkage components include: A first slider and a first connecting rod, wherein the first slider is movably connected to the swing arm of the first force-applying member along an extension direction of the corresponding swing arm, and a first end of the first connecting rod is pivotally connected to the first slider; a second slider and a second connecting rod, wherein the second slider is movably connected to the swing arm of the second force applying member along an extending direction of the corresponding swing arm, and a first end of the second connecting rod is pivotally connected to the second slider; and A power piece and a bracket, wherein the power piece is transmission-connected to the second end of the first connecting rod and the second end of the second connecting rod through a transmission mechanism, and the transmission mechanism is installed on the bracket. The part of the swing arm away from the ratchet head is pivotally connected to the bracket so that the power piece drives the swing arm to swing back and forth relative to the bracket.

9. A method for non-destructive disassembly and assembly of a long-axis deep-well pump shaft, based on the non-destructive disassembly and assembly device for a long-axis deep-well pump shaft as claimed in any one of claims 1 to 8, characterized in that: The method comprises the following steps: The first jacket is sleeved on the pump shaft, and the second jacket is sleeved on the coupling; The first force-applying member is connected to the first jacket, and the second force-applying member is connected to the second jacket, so that the pump shaft and the coupling can be assembled and disassembled by cooperating with the first force-applying member and the second force-applying member.

10. The non-destructive disassembly and assembly method of a long-axis deep-well pump shaft according to claim 9, characterized in that: There are multiple pump shafts and couplings. When all pump shafts and couplings are disassembled and assembled, the first sleeve is sleeved on any pump shaft, and the second sleeve is sleeved on the coupling adjacent to the any pump shaft. The first force-applying member and the second force-applying member cooperate to disassemble and assemble the any pump shaft and the coupling, so that one of the first sleeve and the second sleeve is stationary and the other is sleeved on the next pump shaft or the next coupling. The first force-applying member and the second force-applying member continue to complete the disassembly and assembly, and the first sleeve and the second sleeve are shifted alternately, and so on, until all pump shafts and all couplings are disassembled and assembled.

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