Special platform for disassembling and assembling brake pad of beam-pumping unit

Abstract

The invention relates to a special platform for dismounting and mounting a brake pad of a beam-pumping unit, belongs to the technical field of dismounting and mounting of brake pads, and aims to solve the problems that the brake pad of a brake shoe is unstable and easy to fall, is difficult to clamp, is easy to bump and crush during overturning and can be completed by matching of multiple persons at present. Supporting plates with opposite end faces are fixed to the surface of the platform base, connecting devices used for fixing the brake shoes are further arranged on the supporting plates and comprise brake shoe axial pins penetrating through brake shoe shaft holes to fix the brake shoes, and the number of workers and the labor intensity of operators can be reduced.

Description

Technical Field

[0001] The invention relates to a special platform for disassembling and assembling brake pads of a beam pumping unit, belonging to the technical field of disassembling and assembling brake pads. Background Art

[0002] The oil pump is the most widely used mechanical oil production equipment in the oil field production process, and the oil pump brake system is a very important operating control device of the oil pump. Whether its braking performance is flexible and reliable plays a decisive role in the safety of various operations of the oil pump. The performance of the brake system mainly depends on the brake stroke and the suitability of the brake pads. During the production process, various construction, maintenance and operations must be carried out due to the oil pump's own maintenance or downhole operations. In order to ensure the smooth progress of various construction, maintenance and operations, as well as the safety of mechanical oil production equipment and personnel, the oil pump must be stopped and braked before operation and the dead brake must be mounted to prevent the oil pump brake from slipping and causing accidents to mechanical oil production equipment and personal safety. The brake device of the oil pump is as follows: Figure 1 The figure shows a brake shaft 101, a brake wheel 104 is arranged on the outside of one end of the brake shaft 101, a brake shoe 105 is fixed on the oil pump reduction box through a brake shoe shaft hole 102, a brake pad 103 is arranged on the inner side of the brake shoe 105, a spring 108 is arranged in the middle of a brake arm 109, a pin bolt 106 is arranged at one end of the brake arm 109, and passes through the lower end hole of the brake shoe 105. The brake clearance between the brake pad 103 and the brake wheel 104 is adjusted by adjusting the nut 107, and the purpose of braking is achieved by tightening the brake arm 109.

[0003] The brakes of the oil pump are often used, and each time they are used under high-intensity braking force, which causes great wear on the brake pads. When the brake pads of the oil pump are worn thin or damaged due to long-term use, they need to be replaced in time; because the cost of replacing a whole set of brake shoes is high and there is no need to replace them if there is no obvious crack, the brake pads are generally replaced to repair or restore the braking performance. At present, the brake pads of the brake shoes are mainly replaced by multiple operators in a cooperative way to remove the old brake pads and install new brake pads to repair the brake shoes. In the process of removing the old brake pads and installing new brake pads, the following problems mainly exist: the shape of the oil pump brake shoe is a semi-circular arc shape, whether it is removing the old brake pads, drilling holes, or installing new brake pads, it is unstable and easy to fall, and difficult to clamp; the diameter of the oil pump brake shoe is large and the deadweight is large, and the operator is prone to bumping and smashing when carrying and turning it over; due to the irregular shape and different sizes of the brake shoe, multiple people need to cooperate with each other to complete the disassembly and installation of the brake pads on the brake shoe; when disassembling and installing the brake pads on the brake shoe, it is necessary to manually turn it over and manually fix and punch holes. Summary of the invention

[0004] The purpose of the present invention is to provide a special platform for disassembling and assembling the brake pad of a beam pumping unit, so as to solve the problem that the brake pad of the pumping unit is difficult to disassemble and assemble.

[0005] To achieve the above object, the solution of the present invention includes:

[0006] The present invention discloses a special platform for disassembling and assembling brake pads of a walking beam oil pump, comprising a platform base, a support plate with end faces opposite to each other fixed on the surface of the platform base, a connecting device for fixing the brake shoe is also provided on the support plate, and the connecting device comprises a brake shoe axial pin for fixing the brake shoe by passing through a brake shoe axial hole.

[0007] Through the support plates opposite to the upper end faces of the special platform for disassembling and assembling the oil pump brake pads, and the connecting device for fixing the brake shoes, the special platform has the function of fixing the semi-circular shape of the brake shoes, thereby solving the problem of eliminating the difficulty of disassembling and assembling the brake shoes during the process of disassembling and assembling the brake pads in the existing technology center.

[0008] Furthermore, the connecting device includes a support plate axial pin passing through the support plate and a fixing card fixing the brake shoe axial pin from two ends of the brake shoe axial pin. The support plate axial pin is connected to the fixing card through a radial connecting piece, and the fixing card can rotate circumferentially around the radial connecting piece.

[0009] By means of a fixing card that can rotate around a radial connecting piece, the brake shoe can be radially rotated and axially flipped when removing and installing the brake pad, thereby reducing the number of operators and labor intensity, and reducing safety hazards during lifting and flipping during operation, thereby reducing the occurrence of safety accidents.

[0010] Furthermore, a support plate is arranged at one end of the upper surface of the platform base, and a linear groove is also opened at the other end of the upper surface of the platform base, which extends toward the end where the support plate is located. The linear groove is used to cooperate with the protrusion under the movable support plate to support the outer surface of the horseshoe brake through the upper surface of the movable support plate.

[0011] The coordination of the linear groove and the movable support plate can eliminate the instability and falling of the brake shoe during the process of disassembling and installing the brake pad, thereby improving the safety during the operation.

[0012] Furthermore, the platform base is also provided with a slot for stopping the movable support plate from continuously moving under the action of the brake shoe.

[0013] Furthermore, the movable support plate includes a positioning plate for snapping into the linear groove and a clamping plate for snapping into the clamping groove. The position where the support plate supports the outer surface of the horseshoe brake is also provided with a groove for avoiding the raised part of the outer surface of the horseshoe brake.

[0014] Furthermore, the fixing card is a fixing card with an opening, and opposite surfaces of the opening are provided with symmetrical through holes for connecting the brake shoe axial pin.

[0015] Furthermore, a fixed support hole for installing a fixed support pin is provided on the platform base, and the fixed support pin is used to support the brake pad rivet.

[0016] Furthermore, a plurality of fixing holes for cooperating with the pressure plate to press the brake shoe are provided on one side of the linear groove on the platform base, so that the rivets on the brake shoe are all in the vertical force direction.

[0017] Through the linear groove and multiple fixing holes and fixed support holes on one side of the linear groove, used in conjunction with the fixed support pin, movable support pin and pressure plate, the brake shoes of oil pumps of different widths are always securely fixed when fixing rivets, and the rivets at different positions on the brake shoes can be in the vertical force direction, realizing reliable single-person operation and safe operation.

[0018] Furthermore, fixing devices for docking with a base for raising the height of the special platform are provided at the bottom of both ends of the platform base.

[0019] The tool tray can be placed in the middle of the base to form an accessory tool placement area with the base. It is mainly used to place special tools and accessories, making it easy to take special tools and accessories during operation.

[0020] Furthermore, the fixing device includes a plurality of fixing angles arranged at the bottom of both ends of the platform base, and the fixing angles are provided with connecting fixing holes, and the connecting fixing holes are used to connect with the base for raising the height of the special platform.

[0021] The beneficial effects of the present invention are as follows: the special platform for disassembling and assembling the brake pad of the oil pump and the movable support plate are used in coordination with each other, which has the function of fixing the semi-circular arc shape of the brake shoe, eliminating the instability and easy falling of the brake shoe during the process of disassembling and assembling the brake pad, and improving the safety and convenience of clamping during operation; the fixing card, radial connecting bolt, support plate axial pin and connecting brake shoe axial pin on the special platform are used in coordination with each other, so that the brake shoe can be radially rotated and axially flipped when disassembling and assembling the brake pad, so that one person can operate it, reducing the number of operators and labor intensity, and reducing the safety hazards during lifting and flipping during operation, thereby reducing the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of a brake device for a beam pumping unit in an embodiment of the present invention;

[0023] FIG2( a ) is a front view of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0024] FIG2( b ) is a left side view of the special platform for disassembling and assembling the brake pad of a beam pumping unit according to an embodiment of the present invention;

[0025] FIG2(c) is a top view of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0026] FIG3( a ) is a front view of the base of the dedicated platform for disassembling and assembling the brake pad of a beam pumping unit according to an embodiment of the present invention;

[0027] FIG3( b ) is a left side view of the base of the dedicated platform for disassembling and assembling the brake pad of a beam pumping unit according to an embodiment of the present invention;

[0028] FIG3( c ) is a top view of the base of the dedicated platform for disassembling and assembling the brake pads of a beam pumping unit according to an embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of the movable flipping mechanism of the special platform for disassembling and assembling the brake pad of a beam pumping unit in an embodiment of the present invention;

[0030] FIG5(a) is a top view of a movable support plate of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0031] FIG5( b ) is a front view of a movable support plate of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0032] FIG5(c) is a left view of the movable support plate of the special platform for disassembling and assembling the brake pad of the beam pumping unit according to the embodiment of the present invention;

[0033] Figure 6 It is a schematic diagram of the axial pins of the connecting brake shoes of the special platform for disassembling and assembling the brake pads of the beam pumping unit in the embodiment of the present invention;

[0034] Figure 7 It is a schematic diagram of the axial pin of the support plate of the special platform for disassembling and assembling the brake pad of the beam pumping unit in the embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of radial connection bolts of a special platform for disassembling and assembling brake pads of a beam pumping unit in an embodiment of the present invention;

[0036] FIG9( a ) is a front view of a U-shaped card of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0037] FIG9( b ) is a left side view of a U-shaped card of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0038] FIG9( c ) is a top view of a U-shaped card of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0039] FIG10( a ) is a front view of a tool tray of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0040] FIG10( b ) is a top view of a tool tray of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0041] FIG. 11( a ) is a front view of a fixed support pin of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0042] FIG11( b ) is a top view of a fixed support pin of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0043] FIG. 12( a ) is a top view of a pressure plate of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0044] FIG12( b ) is a front view of a pressure plate of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0045] FIG13( a ) is a front view of a movable support pin of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0046] FIG13( b ) is a top view of the movable support pin of the special platform for disassembling and assembling the brake pad of a beam pumping unit according to an embodiment of the present invention;

[0047] FIG13( c ) is a left view of the movable support pin of the special platform for disassembling and assembling the brake pad of a beam pumping unit according to an embodiment of the present invention;

[0048] Fig.14 It is a schematic diagram of a fixed brake shoe of a special platform for disassembling and assembling brake pads of a beam pumping unit in an embodiment of the present invention;

[0049] Fig.15 A schematic diagram of a perforated brake pad of a special platform for disassembling and assembling a brake pad of a beam pumping unit according to an embodiment of the present invention;

[0050] FIG. 16( a ) is a schematic diagram of a brake shoe fixed by a pressure plate of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0051] FIG. 16( b ) is another schematic diagram of a brake shoe fixed by a pressure plate of a special platform for disassembling and assembling brake pads of a beam pumping unit according to an embodiment of the present invention;

[0052] Fig.17 It is a schematic diagram of the riveting brake shoe rivets of the special platform for disassembling and assembling the brake pad of the beam pumping unit in the embodiment of the present invention;

[0053] In the figure: 2, special platform; 5, movable support plate; 6, brake shoe axial pin; 7, support plate axial pin; 8, radial connecting bolt; 9, fixing card; 11, fixed support pin; 12, pressure plate; 13, movable support pin; 101, brake shaft; 102, brake shoe shaft hole; 103, brake pad; 104, brake wheel; 105, brake shoe; 106, through-pin bolt; 107, adjusting nut; 108, spring; 109, brake arm; 201, platform base; 202, support plate; 203, fixing hole; 204, L-shaped slot; 205, linear slot; 206 , platform seat fixing hole; 207, fixing angle; 208, connecting fixing hole; 209, fixing support hole; 301, base body; 302, intermediate seat; 303, base fixing angle; 304, connecting fixing hole; 401, fixing nut; 501, positioning plate; 502, clamping plate; 503, fixing plate; 701, support plate axial pin body; 702, fixing pin hole; 901, U-shaped clamp; 902, axial pin hole; 903, radial connecting bolt hole; 1201, pressure plate body; 1202, pressure plate tongue; 1203, fixing hole; 1601, fixing screw. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0055] An embodiment of a special platform for disassembling and assembling brake pads of a beam pumping unit:

[0056] As shown in Fig. 2(a), Fig. 2(b) and Fig. 2(c), a special platform for disassembling and assembling brake pads of a walking beam pumping unit is provided. The four base fixing angles 303 on the upper part of the base body 301 and the four fixing angles 207 on the lower part of the special platform 2 are used to fix the special platform 2 on the base body 301 by screws passing through the connecting fixing holes 208 and the connecting fixing holes 304. The base is shown in Fig. 3(a), Fig. 3(b) and Fig. 3(c). The tool tray (the specific structure is shown in Fig. 10(a) and Fig. 10(b)) is placed on the middle seat 302 in the middle of the base, forming an accessory tool placement area with the base, which is mainly used to place special tools and accessories, so as to facilitate the taking of special tools and accessories during operation.

[0057] There are support plates 202 on both sides of one end of the dedicated platform, each support plate has a fixing hole 203, the support plate axial pin 7 passes through the fixing hole 203 of the platform support plate, and the fixing card includes an axial pin hole 902 and a radial connecting bolt hole 903 to form a U-shaped structure, which is hereinafter referred to as a U-shaped card 9, wherein the radial connecting bolt 8 (specific structure as shown in FIG. Figure 8 As shown) through the radial connection bolt hole 903 and the support plate axial pin 7 (the specific structure is as shown Figure 7The fixing pin hole 702 opened by the U-shaped card 9 is fixed at one end of the brake shoe axial pin 6 toward the support plate axial pin 7 through the fixing nut 401, and the U-shaped card 9 is connected to the support plate axial pin 7 connecting platform support plate axial pin body 701, and the brake shoe axial pin (specific structure as shown in FIG. 102) passing through the brake shoe axial hole 102 is fixed by the fixing nut 401. Figure 6 As shown in FIG. 1 ), the brake shoe of the pumping unit is fixed to the U-shaped card 9 through the axial pin hole 902, so that one side of the brake shoe of the pumping unit is fixed to the support plate of the dedicated platform, as shown in FIG. Figure 4 As shown; the other end of the special platform has a raised L-shaped slot 204 and a linear slot 205 on the surface of the special platform body. The other side of the brake shoe is matched with the linear slot 205 and the L-shaped slot 204 through the movable support plate 5, so as to realize the safe axial and radial rotation of the brake shoe required by different processes, and achieve reliable processing of replacing the brake pad of the pumping unit brake shoe. One side of the linear slot 205 at the rear end of the special platform has two platform seat fixing holes 206 and a fixed support hole 209 at the front end, which are used in conjunction with the fixed support pin 11, the movable support pin 13 and the pressure plate 12, so that the pumping unit brake shoes of different widths are always safely fixed when fixing the rivets, and the rivets at different positions on the brake shoe can be in the vertical force direction, so as to realize reliable single-person operation and safe operation.

[0058] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0059] In the specific embodiment 1 of the special platform for disassembling and assembling the brake pad of a beam pumping unit of the present invention, the connection and fixing hole 208 of the special platform 2 and the connection and fixing hole 304 of the base 3 are connected and fixed together by screws.

[0060] When removing the old brake pad 103, the brake shoe 105 needs to face the side with the brake pad 103 upward. Fig.14As shown, the support plate axial pin 7 is fixed to the fixing hole 203 of the support plate 202 of the special platform 1, one end of the screw is connected to the fixing pin hole 702 of the support plate axial pin 7, and the other end is connected to the radial connection bolt hole 903 of the U-shaped card 9 (the specific structure is shown in Figures 9(a), 9(b), and 9(c)), and the brake shoe axial hole is connected to the axial pin hole 902 of the U-shaped card 9 through the brake shoe axial pin 6. As shown in Figures 5(a), 5(b), and 5(c), the movable support plate 5 includes a positioning plate 501, a clamping plate 502, and a fixing plate 503. The positioning plate 501 is used to be clamped into the linear groove 205 of the special platform 2, and the two sides of the clamping plate 502 are clamped into the L-shaped clamping groove 204 of the special platform 2. The raised part of the back of the brake shoe 105 is clamped in the middle of the fixing plate 503. Furthermore, the fixing hole 203 of the support plate axial pin 7 on the support plate 202 of the special platform 2 can be adjusted according to the different sizes of the brake shoe 105, so that the brake shoe 105 can always be safely and stably fixed on the special platform 2. The free rotation of the U-shaped card 9 can make the brake shoe 105 rotate freely, so that the front and back sides of the brake shoe 105 can always be kept in a fixed state in different processes during the removal of the old brake pad. The safe and effective fixing and support of the brake shoe 105 during the removal of the old brake pad is achieved, and the original two-person cooperation operation can be completed by one person, and the safety operation coefficient is improved.

[0061] The specific operation of the special platform for disassembling and assembling the brake pad of the walking beam oil pumping unit of the present invention is as follows: Fig.15As shown, when installing a new brake pad 103 on the brake shoe 105, first glue the brake pad 103 to the brake shoe 105, and clamp both sides with multiple hand vises, drill multiple rivet holes on the brake pad 103 from the back of the brake shoe 105 with a hand drill, and then fix the brake pad 103 and the brake shoe 105 with rivets respectively. The specific operation is shown in Figures 16 and 17. The fixed support pin 11 (the specific structure is shown in Figures 11(a) and 11(b)) is installed in the fixed support hole 209 of the special platform 2, so that the fixed support pin 11 presses against the rivet on one side of the new brake pad 103 of the brake shoe 105. As shown in Figure 13, the movable support pin 13 is inserted into the linear groove 205 of the special platform 2, wherein the specific structure of the movable support pin 13 is shown in Figures 13(a), 13(b) and 13(c). The position is adjusted and presses against the rivet on the other side of the new brake pad 103 of the brake shoe 105; the pressure plate 12 includes a pressure plate body 1201, and one end of the pressure plate body 1201 includes a On the pressure plate tongue that presses the brake shoe 105, a fixing hole 1203 is opened at the other end (the specific structure is shown in Figures 12(a) and 12(b)). The pressure plate 12 is fixed by a screw passing through the fixing hole 1203, and is also supported by another fixing screw 1601. The supported part is far away from the side of the pressure plate tongue 1202. Through the above arrangement, the pressure plate tongue 1202 presses one side of the brake shoe 105, so that the rivets on the brake shoe 105 are all in the vertical force direction, and the pressure plate 12 realizes reliable single-person operation and safe operation. The rivets on both sides are repeatedly knocked with a hammer head to make the protruding parts of the rivets on both sides of the brake pad be pressed into the brake pad by knocking.

[0062] In this embodiment, after hammering a group of rivets on both sides, the pressure plate 12 is loosened to adjust the position of the brake shoe 105, and the fixed support pin 11 and the movable support pin 13 can support the same group of rivets at different positions, and then all the rivets on the brake shoe 105 are pressed into the brake pad 103 through the above-mentioned operation steps.

[0063] In this embodiment, by using a special platform for disassembling and assembling the brake pads of the walking beam oil pump, the participation of one operator is reduced, single-person operation, free radial and axial rotation, safe and reliable operation are achieved, and additional benefits are invisibly increased. In addition, the use of a special platform for clamping also greatly improves the safety operation factor.

[0064] The special platform for disassembling and assembling the brake pads of the walking beam oil pump realizes the safe and effective fixation and support of the brake shoes; it changes the task from two people to one person; it realizes the axial and radial rotation of the brake shoes.

[0065] The above is only a preferred specific embodiment of the present invention, which is mainly used for different operation steps in the process of disassembling and assembling the brake pad of the external brake shoe of the walking beam oil pump. The walking beam oil pump model can be conventional, front-mounted, out-of-phase, special-shaped, curved walking beam or two-stage balanced, and the rated suspension point load (KN) can be 50, 80, 100, 120, 140, 160, 180. Any equivalent replacement or change based on the technical solution and inventive concept of the present invention should be covered within the protection scope of the present invention.

Claims

1. A special platform for disassembling and assembling brake pads of a beam pumping unit, characterized in that: The invention comprises a platform base (201), a support plate (202) with opposite end faces is fixed on the surface of the platform base (201), a connecting device for fixing the brake shoe is also arranged on the support plate (202), and the connecting device comprises a brake shoe axial pin (6) for fixing the brake shoe by passing through the brake shoe axial hole.

2. According to the special platform for disassembling and assembling the brake pad of a beam pumping unit as described in claim 1, it is characterized in that: The connecting device comprises a support plate axial pin (7) passing through the support plate (202) and a fixing clamp (9) fixing the brake shoe axial pin (6) from two ends of the brake shoe axial pin (6); the support plate axial pin (7) is connected to the fixing clamp (9) via a radial connecting piece, and the fixing clamp (9) can rotate around the circumference of the radial connecting piece.

3. According to claim 1, the platform for disassembling and assembling the brake pads of a beam pumping unit is characterized in that: The support plate (202) is arranged at one end of the upper surface of the platform base (201), and a linear groove (205) is also provided at the other end of the upper surface of the platform base (201), wherein the linear groove extends toward the end where the support plate (202) is located, and the linear groove (205) is used to cooperate with a protrusion below the movable support plate (5) to support the outer surface of the horseshoe brake through the upper surface of the movable support plate (5).

4. The special platform for disassembling and assembling brake pads of a beam pumping unit according to claim 3 is characterized in that: The platform base (201) is also provided with a slot (204) for preventing the movable support plate (5) from continuously moving under the action of the brake shoe.

5. According to claim 4, the platform for disassembling and assembling the brake pads of a beam pumping unit is characterized in that: The movable support plate (5) comprises a positioning plate (501) for snapping into the linear groove (205) and a clamping plate (502) for snapping into the clamping groove. The position where the support plate (5) supports the outer surface of the horseshoe brake is also provided with a groove for avoiding the raised part of the outer surface of the horseshoe brake.

6. The special platform for disassembling and assembling brake pads of a beam pumping unit according to claim 2 is characterized in that: The fixing card (9) is a fixing card with an opening, and opposite surfaces of the opening are provided with symmetrical through holes for connecting the brake shoe axial pin (6).

7. The special platform for disassembling and assembling the brake pad of a beam pumping unit according to claim 1, characterized in that: The platform base (201) is also provided with a fixing support hole (209) for installing a fixing support pin (11), and the fixing support pin (11) is used to support the rivet of the brake pad (103).

8. The special platform for disassembling and assembling the brake pad of a beam pumping unit according to claim 7, characterized in that: A plurality of fixing holes for cooperating with the pressure plate (12) to press the brake shoe are also provided on one side of the linear groove (205) on the platform base (201), so that the rivets on the brake shoe (105) are all in the direction perpendicular to the force.

9. The special platform for disassembling and assembling brake pads of a beam pumping unit according to claim 1, characterized in that: The bottoms of both ends of the platform base (201) are provided with fixing devices for docking with a base for raising the height of the special platform.

10. The special platform for disassembling and assembling brake pads of a beam pumping unit according to claim 9, characterized in that: The fixing device comprises a plurality of fixing angles (207) arranged at the bottom of both ends of the platform base (201), and the fixing angles (207) are provided with connecting fixing holes (208), and the connecting fixing holes (208) are used to connect with the base of the special platform for lifting height.

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