Multi-dimensional floatable engine accessory assembling device

Abstract

The invention discloses a multi-dimensional floatable engine accessory assembling device which comprises a base supporting walking assembly, a universal support assembly and a positioning supporting sliding plate assembly which are sequentially arranged from bottom to top, and the base supporting walking assembly is provided with a lifting mechanism and a sliding mechanism capable of moving front and back. The universal support assembly comprises a universal bottom plate, an upper guide rail mounting plate, a connecting rod and a spherical moving part arranged between the universal bottom plate and the upper guide rail mounting plate, the connecting rod sequentially penetrates through the universal bottom plate, the spherical moving part and the upper guide rail mounting plate to be connected, and an elastic part is arranged between the top end of the connecting rod and the upper guide rail mounting plate. The positioning and supporting sliding plate assembly is connected to the upper guide rail mounting plate in a sliding mode, the engine accessory is assembled on the positioning and supporting sliding plate assembly, three-axis movement, pitching in the Y direction and floating rotation in the 360-degree direction within the limiting range of the engine accessory can be completed, and adjustment of the posture of the engine accessory in the mounting and dismounting process is achieved. And the engine accessories can be quickly mounted or dismounted.

Description

Technical Field

[0001] The invention relates to the technical field of engine assembly, in particular to a multi-dimensional floating engine accessory assembly device. Background Art

[0002] At present, the installation and disassembly of engine accessories such as starters and fuel pumps are mostly done by manual lifting and assembly, or by using a two-dimensional lifting and moving assembly device. Manual lifting and installation and disassembly are relatively strong, and the two-dimensional lifting and moving assembly device cannot achieve the axial angular adjustment and axial pitch adjustment of the accessories. The installation process is relatively time-consuming, especially when the engine is overhauled in the field, the operator has limited operating space, and the manual lifting and disassembly and installation of engine accessories in a narrow space are labor-intensive and low in safety. Therefore, it is very necessary to design a multi-dimensional, floating assembly device to improve on-site assembly efficiency and reduce the labor intensity of operators. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a multi-dimensional floating engine accessory assembly device to solve the above-mentioned problems.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A multi-dimensional floating engine accessory assembly device comprises a base support walking assembly, a universal bearing assembly and a positioning support slide plate assembly which are arranged in sequence from bottom to top; the base support walking assembly is provided with a lifting mechanism and a sliding mechanism for pushing the universal bearing assembly and the positioning support slide plate assembly to move up and down and a sliding mechanism for moving forward and backward; the universal bearing assembly comprises a universal base plate, an upper guide rail mounting plate, a connecting rod and a spherical movable part arranged between the universal base plate and the upper guide rail mounting plate; the connecting rod passes through the universal base plate, the spherical movable part and the upper guide rail mounting plate in sequence from bottom to top for connecting the universal base plate and the upper guide rail mounting plate; an elastic part is provided between the top end of the connecting rod and the upper guide rail mounting plate; the positioning support slide plate assembly is slidably connected to the upper guide rail mounting plate; the engine accessory is assembled on the positioning support slide plate assembly; and the flexible rotation of the engine accessory is achieved through the universal bearing assembly.

[0006] In the above invention content, further, the base supporting the walking assembly includes a lower mounting plate, an upper mounting plate and a movable base plate connected from bottom to top, the lower mounting plate and the upper mounting plate are connected by a guide cylinder column, a guide column is fixed to the lower surface of the movable base plate, one end of the guide column passes through the guide cylinder column and extends to the bottom of the lower mounting plate, and the lifting mechanism is fixed on the upper mounting plate to push the movable base plate to move up and down.

[0007] In the above invention, further, the lower mounting plate is provided with a universal wheel and a limit support, and the top end of the limit support passes through the lower mounting plate and is fixed by a threaded sleeve.

[0008] In the above invention, further, a bearing sleeve is provided at the connection between the top end of the guide cylinder column and the upper mounting plate, and a retaining ring is provided at the bottom end of the guide column, and the diameter of the retaining ring is larger than the inner diameter of the bearing sleeve.

[0009] In the above invention content, further, the lifting mechanism includes a mounting seat and a spiral elevator, the spiral elevator is fixed to the upper mounting plate through the mounting seat, both ends of the wheel axle on the spiral elevator extend outward and are connected to a handwheel, and the top output shaft of the spiral elevator is fixedly connected to the lower surface of the movable base plate.

[0010] In the above invention content, further, the sliding mechanism includes two oppositely installed pneumatic springs, a guide rail and a slider that cooperates with the guide rail, the guide rail is arranged on the upper surface of the movable base plate along the y-axis, the slider is arranged on the lower surface of the universal base plate along the y-axis, the fixed end of the pneumatic spring is installed on the movable base plate, and the movable end of the pneumatic spring is installed on the universal base plate.

[0011] In the above invention content, further, the spherical movable part is composed of a conical support seat and a spherical support ring, the conical support seat is fixed on the universal base plate, and the spherical support ring is fixed on the lower surface of the upper guide rail mounting plate. The spherical support ring is ring-shaped, and the spherical bottom surface of the spherical support ring is placed in the conical surface of the conical support seat, and the spherical support ring can rotate relative to the conical support seat.

[0012] In the above invention content, further, a lower cross beam is provided on the universal base plate, an upper cross beam is provided on the upper guide rail mounting plate, the connecting rod passes through the lower cross beam and the upper cross beam in sequence to connect the universal base plate and the upper guide rail mounting plate, the top end of the connecting rod is threadedly connected with a nut, the elastic part is a butterfly spring, and the butterfly spring is sleeved on the top end of the connecting rod and placed between the nut and the upper cross beam.

[0013] In the above invention, further, the upper surface of the conical support seat is inclined, a limiting groove is axially opened on one side surface of the conical support seat, and a limiting block inserted into the limiting groove is installed on the lower surface of the upper guide rail mounting plate by screws.

[0014] In the above invention content, further, the positioning support skateboard assembly includes two oppositely installed pneumatic springs 2, a skateboard, a guide rail 2 and a slider 2 cooperating with the guide rail 2, the guide rail 2 is arranged on the upper surface of the upper guide rail mounting plate along the x-axis, the slider 2 is arranged on the lower surface of the skateboard along the x-axis, the movable end of the pneumatic spring 2 is fixed on the skateboard, the fixed end of the pneumatic spring 2 is fixed on the upper guide rail mounting plate, and a handle is provided on the end of the skateboard for pushing the skateboard to slide along the guide rail 2; a plurality of positioning blocks for placing engine accessories are placed on the skateboard, and a plurality of positioning pin holes are provided on the positioning blocks.

[0015] The beneficial effects of the present invention are:

[0016] The device can complete the movement of the engine accessories along the X, Y, and Z directions, the pitch along the Y direction, and the floating rotation within a limited range of 360 degrees through structures such as the lifting mechanism, the movable mechanism, and the universal support assembly, so that the spline input shaft on the accessory is aligned with the spline hole at the installation position, and the angular positioning pins are aligned, so that the posture of the engine accessories can be adjusted during the installation and removal process, the installation or removal of the engine accessories can be completed quickly, the assembly efficiency is improved, the labor intensity of the operator is reduced, the operation is simple, and the practicability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the base supporting the walking assembly and the lifting mechanism of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the base supporting the walking assembly of the present invention;

[0020] Figure 4 for Figure 3 A front cross-sectional view of

[0021] Figure 5 A half-section view of the universal support assembly of the present invention;

[0022] Figure 6 It is a front cross-sectional view of the universal support assembly of the present invention;

[0023] Figure 7 Another perspective view of the universal support assembly of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the positioning support slide assembly of the present invention;

[0025] Fig. 9 Another perspective view of the positioning support slide assembly of the present invention.

[0026] In the figure, 10-base support walking assembly, 11-lower mounting plate, 12-upper mounting plate, 13-movable bottom plate, 14-guide cylinder column, 15-guide column, 16-retaining ring, 17-universal wheel, 18-limit support, 19-bearing sleeve, 20-lifting mechanism, 21-mounting seat, 22-screw lift, 23-axle, 24-hand wheel, 30-sliding mechanism, 31-pneumatic spring one, 32-guide rail one, 33-slider one , 40-universal support assembly, 41-universal base plate, 42-upper guide rail mounting plate, 43-connecting rod, 44-conical support seat, 45-spherical support ring, 46-elastic member, 47-lower beam, 48-upper beam, 49-nut, 50-positioning support slide assembly, 51-pneumatic spring two, 52-slide plate, 53-guide rail two, 54-slider two, 55-handle, 56-positioning block, 60-limiting groove, 61-limiting block. DETAILED DESCRIPTION

[0027] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] Please refer to the attached Figure 1-3 As shown, a multi-dimensional floating engine accessory assembly device comprises a base support walking assembly 10, a universal support assembly 40 and a positioning support slide assembly 50 which are arranged in sequence from bottom to top. The universal support assembly 40 is used to drive the engine accessories to float and rotate within a controllable range, thereby realizing smooth installation and removal of the engine accessories. The base support walking assembly 10 is provided with a lifting mechanism 20 and a sliding mechanism 30 for pushing the universal support assembly 40 and the positioning support slide assembly 50 to move up and down and moving forward and backward;

[0029] As attached Figure 5 and attached Figure 6As shown, the universal support assembly 40 includes a universal base plate 41, an upper guide rail mounting plate 42, a connecting rod 43, and a spherical movable member arranged between the universal base plate 41 and the upper guide rail mounting plate 42. The connecting rod 43 passes through the universal base plate 41, the spherical movable member, and the upper guide rail mounting plate 42 from bottom to top in sequence to connect the universal base plate 41 and the upper guide rail mounting plate 42. The universal base plate 41 remains stationary, the spherical movable member is placed on the universal base plate 41, the upper guide rail mounting plate 42 is connected to the spherical movable member, and the upper guide rail mounting plate 42 is connected to the spherical movable member. The spherical movable part floats and rotates as a fulcrum, and the engine accessories are assembled on the positioning support slide plate assembly 50. The engine accessories float and rotate together with the spherical movable part. In order to improve the stability of the spherical movable part, a connecting rod 43 is provided. An elastic member 46 is provided between the top end of the connecting rod 43 and the upper guide rail mounting plate 42. The flexibility of rotation is adjusted by the connecting rod 43. The positioning support slide plate assembly 50 is slidably connected to the upper guide rail mounting plate 42, and the flexible rotation of the engine accessories is realized through the universal support assembly 40, so that quick disassembly and installation can be achieved.

[0030] As attached Figure 3 As shown, the base supporting walking assembly 10 includes a lower mounting plate 11, an upper mounting plate 12 and a movable base plate 13 connected from bottom to top, the lower mounting plate 11 and the upper mounting plate 12 are connected by a guide cylinder column 14, a guide column 15 is fixed to the lower surface of the movable base plate 13, one end of the guide column 15 passes through the guide cylinder column 14 and extends to the bottom of the lower mounting plate 11, so that the movable base plate 13 can move up and down relative to the upper mounting plate 12, and the lifting mechanism 20 is fixed on the upper mounting plate 12 to push the movable base plate 13 to move up and down, thereby realizing the lifting and lowering of the engine accessories and reducing manpower support.

[0031] In the above embodiment, preferably, the lower mounting plate 11 is provided with a universal wheel 17 and a limit support 18, so that the assembly site can be the ground, tires, field service and the like, and the transportation is convenient. The top end of the limit support 18 passes through the lower mounting plate 11 and is fixed by a threaded sleeve (not shown in the drawings). When the device is moved to the required assembly position, the threaded sleeve is loosened to make the bottom end of the limit support 18 contact with the bottom surface, and then the threaded sleeve is tightened to keep the entire device stable through the limit support 18.

[0032] In the above embodiment, preferably, a bearing sleeve 19 is provided at the connection between the top end of the guide cylinder column 14 and the upper mounting plate 12, and a retaining ring 16 is provided at the bottom end of the guide column 15, and the diameter of the retaining ring 16 is larger than the inner diameter of the bearing sleeve 19; specifically, the bottom end of the guide column 15 passes through the linear bearing of the bearing sleeve 19, and when the lifting mechanism 20 drives the movable base plate 13 to move upward, the guide column 15 moves upward along the guide cylinder column 14, and when it moves to the uppermost end, the retaining ring 16 at the bottom contacts with the linear bearing, thereby realizing the limit in the z-axis direction.

[0033] Specifically, as attached Figure 2 As shown, the lifting mechanism 20 includes a mounting seat 21 and a screw elevator 22. The screw elevator 22 used in this embodiment is a common lifting mechanism in the prior art and will not be described in detail in this embodiment. The screw elevator 22 is fixed to the upper mounting plate 12 through the mounting seat 21. Both ends of the wheel axle 23 on the screw elevator 22 extend outward and are connected to a handwheel 24. The output shaft at the top of the screw elevator 22 is fixedly connected to the lower surface of the movable base plate 13. The operator only needs to turn the handwheel 24 to control the lifting and lowering of the movable base plate 13, thereby realizing the adjustment of the engine accessories in the z-axis direction.

[0034] As attached Figure 3 As shown, the sliding mechanism 30 includes two pneumatic springs 31 installed in opposite directions, a guide rail 32 and a slider 33 cooperating with the guide rail 32, the guide rail 32 is arranged on the upper surface of the movable base plate 13 along the y-axis, the slider 33 is arranged on the lower surface of the universal base plate 41 along the y-axis, the fixed end of the pneumatic spring 31 is installed on the movable base plate 13, and the movable end of the pneumatic spring 31 is installed on the universal base plate 41; through the bidirectionally installed pneumatic spring 31, the bidirectional positive and negative compression forces are balanced, so that the universal support assembly 40 and the engine accessories on the sliding mechanism 30 can be stopped at any position along the y-axis direction, thereby realizing any adjustment of the engine accessories in the y-axis direction and reducing the influence of the engine's own gravity.

[0035] As attached Figure 6 As shown, the spherical movable part is composed of a conical support seat 44 and a spherical support ring 45. The conical support seat 44 is fixed on the universal base plate 41, and the spherical support ring 45 is fixed on the lower surface of the upper guide rail mounting plate 42. As shown in the figure, the spherical support ring 45 is ring-shaped, and the spherical bottom surface of the spherical support ring 45 is placed in the conical surface of the conical support seat 44, so that the spherical support ring 45 can achieve 360° floating rotation relative to the conical support seat 44 inside it, and the rotation is flexible and light, which is convenient for aligning the spline input shaft on the engine accessory with the spline hole of the installation position.

[0036] In the above embodiments, preferably, as shown in the attached Figure 5 As shown, in order to improve the stability of the spherical support ring 45, a lower cross beam 47 is provided on the universal base plate 41, and an upper cross beam 48 is provided on the upper guide rail mounting plate 42. The connecting rod 43 passes through the lower cross beam 47 and the upper cross beam 48 in sequence to connect the universal base plate 41 and the upper guide rail mounting plate 42. The top end of the connecting rod 43 is threadedly connected with a nut 49. The elastic member 46 is a butterfly spring. The butterfly spring is sleeved on the top end of the connecting rod 43 and placed between the nut 49 and the upper cross beam 48. The compression force of the butterfly spring can be adjusted by adjusting the nut 49 at the top end, thereby adjusting the relative rotation flexibility of the spherical support ring 45 and the conical support seat 44.

[0037] In the above embodiment, preferably, as shown in the attached Figure 7 As shown, according to the installation state of the engine accessories, a certain inclination is required. Therefore, the upper surface of the conical support seat 44 is inclined so that when the engine falls on the device for assembly, its axis is parallel to the axis of the installation position; wherein the spherical radius of the spherical support ring 45 is designed to be a radius value that allows the engine accessories to rotate around the axis of its input shaft, so that the engine accessories can align the angular positioning pins on the engine mounting seat 21;

[0038] Preferably, a limiting groove 60 is axially opened on one side surface of the conical support seat 44, and a limiting block 61 inserted into the limiting groove 60 is installed on the lower surface of the upper guide rail mounting plate 42 by screws, so that the universal support assembly can move within a certain range to meet the required rotation amount during assembly.

[0039] Please refer to the attached Figure 8 and attached Fig. 9 As shown, the positioning support slide plate assembly 50 includes two pneumatic springs 2 51 installed in opposite directions, a slide plate 52, a guide rail 2 53 and a slider 2 54 matched with the guide rail 2 53. The guide rail 2 53 is arranged on the upper surface of the upper guide rail mounting plate 42 along the x-axis, and the slider 2 54 is arranged on the lower surface of the slide plate 52 along the x-axis. The movable end of the pneumatic spring 2 51 is fixed on the slide plate 52, and the fixed end of the pneumatic spring 2 51 is fixed on the upper guide rail mounting plate 42. The pneumatic spring 2 51 has the same principle as the pneumatic spring 1 31, and both are for stopping at any position on the track when sliding. A handle 55 for pushing the slide plate 52 to slide along the guide rail 2 53 is provided on the end of the slide plate 52. During operation, the operator can pull the handle 55 to drive the engine accessories on the slide plate 52 to move along the guide rail 2 53, thereby realizing the adjustment of the engine accessories in the x-axis direction.

[0040] The universal support assembly and the engine accessories can also be driven to move along the Y-axis direction by pulling the handle 55. That is, during assembly, the operator only needs to move the handle 55 and turn the hand wheel 24 to complete the movement of the engine accessories along the X, Y, and Z-axis directions and the pitch along the Y-axis direction and the floating rotation of 360° in a limited range, thereby aligning the spline input shaft on the accessory with the spline hole at the installation position and the angular positioning pins, thereby achieving smooth installation and disassembly of the engine accessories, improving assembly efficiency, reducing the labor intensity of the operator, and being simple and convenient to operate with high practicality.

[0041] A plurality of positioning blocks for placing engine accessories are placed on the slide plate, and a plurality of positioning pin holes are provided on the positioning blocks. The engine accessories are fixed on the device through the plurality of positioning blocks, thereby improving the safety of operation.

[0042] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0043] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A multi-dimensional floating engine accessory assembly device, characterized in that: The invention comprises a base supporting walking assembly (10), a universal support assembly (40) and a positioning supporting slide assembly (50) which are arranged in sequence from bottom to top. The base supporting walking assembly (10) is provided with a lifting mechanism (20) and a sliding mechanism (30) for pushing the universal support assembly (40) and the positioning supporting slide assembly (50) to move up and down and a sliding mechanism (30) for moving forward and backward. The universal support assembly (40) comprises a universal bottom plate (41), an upper guide rail mounting plate (42), a connecting rod (43) and a connecting rod (44) arranged between the universal bottom plate (41) and the upper guide rail mounting plate (42). The connecting rod (43) passes through the universal base plate (41), the spherical movable part and the upper guide rail mounting plate (42) from bottom to top in sequence and is used to connect the universal base plate (41) and the upper guide rail mounting plate (42). An elastic member (46) is provided between the top end of the connecting rod (43) and the upper guide rail mounting plate (42). The positioning support slide plate assembly (50) is slidably connected to the upper guide rail mounting plate (42). The engine accessories are assembled on the positioning support slide plate assembly (50), and the flexible rotation of the engine accessories is realized through the universal support assembly (40).

2. A multi-dimensional floating engine accessory assembly device according to claim 1, characterized in that: The base supporting walking assembly (10) comprises a lower mounting plate (11), an upper mounting plate (12) and a movable base plate (13) connected from bottom to top, wherein the lower mounting plate (11) and the upper mounting plate (12) are connected via a guide cylinder column (14), a guide column (15) is fixed on the lower surface of the movable base plate (13), one end of the guide column (15) passes through the guide cylinder column (14) and extends to the bottom of the lower mounting plate (11), and the lifting mechanism (20) is fixed on the upper mounting plate (12) and is used to push the movable base plate (13) to move up and down.

3. A multi-dimensional floating engine accessory assembly device according to claim 2, characterized in that: The lower mounting plate (11) is provided with a universal wheel (17) and a position limiting support (18), and the top end of the position limiting support (18) passes through the lower mounting plate (11) and is fixed by a threaded sleeve.

4. A multi-dimensional floating engine accessory assembly device according to claim 2, characterized in that: A bearing sleeve (19) is provided at the connection between the top end of the guide cylinder column (14) and the upper mounting plate (12), and a retaining ring (16) is provided at the bottom end of the guide column (15), wherein the diameter of the retaining ring (16) is greater than the inner diameter of the bearing sleeve (19).

5. The multi-dimensional floating engine accessory assembly device according to claim 2, characterized in that: The lifting mechanism (20) comprises a mounting seat (21) and a spiral lift (22); the spiral lift (22) is fixed to the upper mounting plate (12) via the mounting seat (21); both ends of the wheel shaft (23) on the spiral lift (22) extend outward and are connected to a hand wheel (24); and the top output shaft of the spiral lift (22) is fixedly connected to the lower surface of the movable bottom plate (13).

6. The multi-dimensional floating engine accessory assembly device according to claim 2, characterized in that: The sliding mechanism (30) comprises two pneumatic springs (31) mounted in opposite directions, a guide rail (32) and a slider (33) matched with the guide rail (32); the guide rail (32) is arranged on the upper surface of the movable base plate (13) along the y-axis; the slider (33) is arranged on the lower surface of the universal base plate (41) along the y-axis; the fixed end of the pneumatic spring (31) is mounted on the movable base plate (13); and the movable end of the pneumatic spring (31) is mounted on the universal base plate (41).

7. The multi-dimensional floating engine accessory assembly device according to claim 1, characterized in that: The spherical movable part is composed of a conical support seat (44) and a spherical support ring (45). The conical support seat (44) is fixed on the universal base plate (41), and the spherical support ring (45) is fixed on the lower surface of the upper guide rail mounting plate (42). The spherical support ring (45) is ring-shaped, and the spherical bottom surface of the spherical support ring (45) is placed in the conical surface of the conical support seat (44). The spherical support ring (45) can rotate relative to the conical support seat (44).

8. The multi-dimensional floating engine accessory assembly device according to claim 7, characterized in that: The universal base plate (41) is provided with a lower cross beam (47), the upper guide rail mounting plate (42) is provided with an upper cross beam (48), the connecting rod (43) passes through the lower cross beam (47) and the upper cross beam (48) in sequence to connect the universal base plate (41) and the upper guide rail mounting plate (42), the top end of the connecting rod (43) is threadedly connected with a nut (49), and the elastic member (46) is a butterfly spring, which is sleeved on the top end of the connecting rod (43) and placed between the nut (49) and the upper cross beam (48).

9. The multi-dimensional floating engine accessory assembly device according to claim 7, characterized in that: The upper surface of the conical support seat (44) is inclined, and a limiting groove (60) is axially provided on one side surface of the conical support seat (44). A limiting block (61) inserted into the limiting groove (60) is installed on the lower surface of the upper guide rail mounting plate (42) by means of screws.

10. The multi-dimensional floating engine accessory assembly device according to claim 1, characterized in that: The positioning support slide plate assembly (50) comprises two pneumatic springs (51) installed in opposite directions, a slide plate (52), a guide rail (53) and a slider (54) matched with the guide rail (53); the guide rail (53) is arranged on the upper surface of the upper guide rail mounting plate (42) along the x-axis; the slider (54) is arranged on the lower surface of the slide plate (52) along the x-axis; the movable end of the pneumatic spring (51) is fixed on the slide plate (52); the fixed end of the pneumatic spring (51) is fixed on the upper guide rail mounting plate (42); and a handle (55) is provided on the end of the slide plate (52) for pushing the slide plate (52) to slide along the guide rail (53); and a plurality of positioning blocks (56) for placing engine accessories are provided on the slide plate (52); and a plurality of positioning pin holes are provided on the positioning blocks (56).

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