Large-diameter long pin shaft creeping assembly device

Abstract

The application discloses a large-diameter long pin shaft crawling assembly device and belongs to the technical field of pin shaft assembly. The device comprises a guide rail assembly, a supporting assembly, a pushing assembly and height-adjustable supporting legs. The front half of the guide rail assembly is fixed on a platform, and the rear half is fixed on the ground through the height-adjustable supporting legs. A large workpiece is connected to the platform through a long pin shaft hinge. The guide rail assembly is adjusted to be flush with the platform through the height-adjustable supporting legs. A plurality of height-adjustable supporting assemblies are arranged on the guide rail assembly at intervals. The long pin shaft is placed on the supporting assemblies. The pushing assembly is slidingly connected to the guide rail assembly and is connected with a screw jack. The pushing assembly can freely move on the platform, realizing stable crawling installation of the long pin shaft. The device solves the problem of difficult installation of large-diameter long pin shafts.

Description

Technical Field

[0001] This invention belongs to the field of pin assembly technology and relates to a crawling assembly device for large-diameter long pins. Background Technology

[0002] The long pin is an important component of a certain special device and a key part to ensure the smooth rotation of the product. Previously, through on-site monitoring of the assembly of a certain pin, some problems were discovered during the assembly process:

[0003] 1. The pins are heavy, and manual assembly alone results in low assembly efficiency and extremely high labor intensity for workers.

[0004] 2. Currently, the pin shaft is installed using a hammer. The overhead crane suspends the hammer, and a person holds the hammer to carefully insert the long pin shaft into the slewing support lug.

[0005] 3. The existing factory installation method does not meet the requirements for rapid installation of large-diameter long pins;

[0006] 4. Due to the small gap between the pin and the hole, the clamping force is large, making it inconvenient to install the hammer;

[0007] 5. The installation requires two truck cranes to work in coordination, which means that the cranes will be occupied continuously.

[0008] Existing patent CN108907672B discloses a hydraulic cylinder pin installation tool and its usage method, comprising: a main tool component, a first positioning sleeve, a guide shaft, a second positioning sleeve, a pressure plate, and a thrust rod. The main tool component has a first positioning sleeve hole on one side for fitting the first positioning sleeve, and a second positioning sleeve hole on the other side, aligned with the axis of the first positioning sleeve hole. The second positioning sleeve hole can accommodate the second positioning sleeve, the guide shaft, and the pin. The pressure plate is located on the pin side and is bolted to the main tool component to form a whole. One end of the thrust rod contacts the pin through a hole in the pressure plate, pushing the pin and the guide shaft in the direction of applied force. This installation tool can install pins; however, for pins with large diameters and long lengths, the structure of the positioning sleeve, pressure plate, and thrust rod is still not conducive to the quick and convenient installation of such special pins. Summary of the Invention

[0009] This invention overcomes the shortcomings of existing technologies by proposing a crawling assembly device for large-diameter long pins to solve the problem of difficult installation of large-diameter long pins. This invention is achieved through the following technical solution:

[0010] A large-diameter long pin-shaft crawling assembly device includes a guide rail assembly, a support assembly, a propulsion assembly, and height-adjustable support legs. The front half of the guide rail assembly is fixed to a platform, and the rear half of the guide rail assembly is fixed to the ground via the height-adjustable support legs. A large workpiece is hinged to the platform via a long pin. The height-adjustable support legs are used to adjust the guide rail assembly to be flush with the platform. Multiple support assemblies are spaced apart on the guide rail assembly.

[0011] The support assembly includes a mounting base, a wheel, a support, a screw, a nut, and a key. The mounting base is detachably connected to the guide rail assembly. The mounting base includes a flat plate and a cylindrical column, with the cylindrical column connected to the flat plate. A positioning groove is provided inside the cylindrical column of the mounting base, and the key is installed in the positioning groove. The bottom of the screw is slidably connected inside the cylindrical column. The nut is connected to the outer wall of the screw. The top of the screw is connected to the support. Placement grooves are provided at both ends of the support, and the two ends of the wheel axle at the center of the wheel are placed in the placement grooves. The wheel axle is fixed to the support by a pressure cap. The wheel body is rotatably connected to the wheel axle by a copper sleeve. A long pin is placed on the wheel, and the center of the long pin coincides with the center of the pin hole on the platform.

[0012] The propulsion component is slidably connected to the guide rail assembly, and the propulsion component is connected to a screw jack; the propulsion component is connected to the guide rail assembly via a pin.

[0013] Furthermore, the guide rail assembly includes a steel pipe and a guide rail plate; the guide rail plate is fixedly installed on the upper surface of the steel pipe; and mounting holes at equal intervals are machined on the guide rail plate.

[0014] Furthermore, multiple short mounting plates and multiple long mounting plates are installed at intervals at the bottom of the steel pipe; the front half of the guide rail assembly is fixed to the surface of the platform through the long mounting plates, and the top of the height-adjustable support legs is connected to the short mounting plates.

[0015] Furthermore, reinforcing ribs are welded between the long mounting plate and the side wall of the steel pipe.

[0016] Furthermore, the steel pipe and guide rail plate are provided with installation interfaces for support components and propulsion components at corresponding positions. The installation interface for the support components is a side-through structure, and the cylindrical column is located in the side-through installation interface. The plate is provided with connection holes, and the connection holes on the plate are aligned with the installation holes on the guide rail plate for connection and fixation.

[0017] Furthermore, the height-adjustable outrigger includes an upper outrigger assembly and a lower outrigger assembly; the bottom of the lower outrigger assembly is fixed to the ground, the top of the lower outrigger assembly is sleeved with the bottom of the upper outrigger assembly and fixed by bolts and nuts, and the top of the upper outrigger assembly is connected to a short mounting plate at the bottom of the steel pipe.

[0018] Furthermore, the propulsion assembly also includes a rear seat, on which a helical jack is fixed, and the rear seat 20 is slidably connected to the guide rail plate 7.

[0019] Furthermore, the rear seat includes a base plate and a vertical plate, with the vertical plate fixed to the surface of the base plate, and the screw jack fixed to the vertical plate via a connecting seat.

[0020] Furthermore, limit blocks are provided on both sides of the bottom of the base plate; the limit blocks are engaged with both sides of the guide rail plate.

[0021] Furthermore, the lower part of the spiral jack is connected to the vertical plate by a lower support.

[0022] The beneficial effects of this invention compared to the prior art are as follows:

[0023] 1) The large-diameter long pin shaft crawling assembly device of the present invention realizes stable crawling installation of long pin shafts;

[0024] 2) The equipment can move freely on the platform and be flexibly assembled;

[0025] 3) The installation time for the pins is significantly reduced;

[0026] 4) Reduce the labor intensity of operators;

[0027] 5) The use of a hammer is eliminated, saving time spent using the crane. Attached Figure Description

[0028] Figure 1 A schematic diagram of a large-diameter long pin-shaft crawling assembly device;

[0029] Figure 2 This is a schematic diagram of the guide rail assembly.

[0030] Figure 3 A schematic diagram of the supporting components;

[0031] Figure 4 A cross-sectional view of the supporting component cut from the middle of the wheel;

[0032] Figure 5 One of the structural diagrams for the propulsion component;

[0033] Figure 6 The second schematic diagram of the component structure;

[0034] In the picture:

[0035] 1 is the guide rail assembly, 2 is the support assembly, 3 is the propulsion assembly, 4 is the upper support leg assembly, 5 is the lower support leg assembly, 6 is the steel pipe, 7 is the guide rail, 8 is the short mounting plate, 9 is the long mounting plate, 10 is the reinforcing rib, 11 is the pressure cap, 12 is the wheel, 13 is the support, 14 is the mounting base, 15 is the copper sleeve, 16 is the screw, 17 is the nut, 18 is the key, 19 is the screw jack, 20 is the rear seat, 21 is the limit block, 22 is the lower support, 23 is the pin, 24 is the large workpiece, 25 is the long pin shaft, 26 is the slewing lug support, 27 is the platform, 28 is the flat plate, and 29 is the cylindrical column. Detailed Implementation

[0036] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solutions of this invention are described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0037] This embodiment proposes a large-diameter long pin crawling assembly device, suitable for installing large-diameter long pins. In this embodiment, the crawling assembly device is used to install and fix a large workpiece 24 onto a platform 27 via a long pin 25 and a swivel lug support 26. The swivel lug support 26 is fixed to the platform 27. The large workpiece 24 with the swivel lug is hoisted to the swivel lug support 26. Then, the long pin 25 needs to pass through the swivel lug and the swivel lug support 26 to hinge the large workpiece 24 onto the platform 27. In this embodiment, the large workpiece 24 weighs 100T, the long pin 25 has a diameter of 200mm and a length of 2800mm, with a tolerance of H8 / f7. The long pin 25 needs to pass from one side to the other. Installing the long pin 25 utilizes a large-diameter long pin crawling assembly device.

[0038] Please see Figures 1 to 6 The crawling assembly device mainly consists of a guide rail assembly 1, a support assembly 2, a propulsion assembly 3, an upper support leg assembly 4, and a lower support leg assembly 5.

[0039] The guide rail assembly 1 is welded together from steel pipe 6, guide rail plate 7, short mounting plate 8, long mounting plate 9, and reinforcing rib 10; the guide rail plate 7 is fixedly installed on the upper surface of the steel pipe 6; the guide rail plate 7 is machined with mounting holes at equal intervals, and the corresponding positions of the steel pipe 6 and the guide rail plate 7 are provided with mounting interfaces for support assembly 2 and push assembly 3, and the lower part of the steel pipe 6 is provided with mounting interface for support leg assembly. Two short mounting plates 8 and two long mounting plates 9 are also installed at intervals at the bottom of the steel pipe 6. The short mounting plates 8 are used to install the upper support leg assembly 4, and the long mounting plates 9 are used to fix it to the platform 27. The front half of the guide rail assembly 1 is fixed to the surface of the platform 27 by the long mounting plates 9, and the rear half of the guide rail assembly 1 is fixed to the ground by the upper support leg assembly 4 and the lower support leg assembly 5. Specifically, the bottom of the lower support leg assembly 5 is fixed to the ground, and the top of the lower support leg assembly 5 is sleeved with the bottom of the upper support leg assembly 4 and fixed by bolts and nuts. The top of the upper support leg assembly 4 is connected to the short mounting plate 8 at the bottom of the steel pipe 6. The height of the guide rail assembly 1 can be adjusted by the upper support leg assembly 4 and the lower support leg assembly 5, so that the guide rail assembly 1 can be located on a horizontal plane.

[0040] To enhance the overall stability of the guide rail assembly 1, reinforcing ribs 10 are welded between the long mounting plate 9 and the side wall of the steel pipe 6.

[0041] like Figure 3 , 4As shown, the support assembly 2 mainly consists of a pressure cap 11, a wheel 12, a support 13, a mounting base 14, a copper sleeve 15, a screw 16, a nut 17, and a key 18. Its main function is to allow the long pin 25 to be adjusted in both vertical and horizontal directions, ensuring that the center of the long pin 25 coincides with the center of the pin hole. The mounting base 14 includes a flat plate 28 and a cylindrical column 29. The cylindrical column 29 is located in the middle of the flat plate 28, which has a connecting hole. The cylindrical column 29 of the mounting base 14 has a positioning groove for the key 18, and the key 18 is installed in the positioning groove. The bottom of the screw 16 has a sliding connection. The wheel 12 is connected to the cylindrical tube 29; the nut 17 is connected to the outer wall of the screw 16; the top of the screw 16 is connected to the support 13; the support 13 has placement grooves at both ends, and the two ends of the wheel axle at the center of the wheel 12 are placed in the placement grooves, and the wheel axle is fixed to the support 13 by the pressure cap 11; the wheel body of the wheel 12 is rotatably connected to the wheel axle by the copper sleeve 15; the long pin 25 is placed on the wheel 12, and the center of the long pin 25 coincides with the center of the pin hole on the platform 27; the nut 17 only rotates under the limit, and the screw 16 can only move up and down under the limit of the key 18. Rotating the nut 17 will drive the screw 16 to move up and down, and drive the wheel 12 on the support 13 to move up and down, so that the wheel 12 reaches a suitable height; the wheel 12 can slide on the support 13 to adapt to deviations in the left and right directions. During installation, the cylindrical column 29 at the bottom of the support assembly 2 is located within the mounting interface of the steel pipe 6 and the guide rail plate 7. The connecting holes on the plate 28 are then aligned with the mounting holes on the guide rail plate 7. The support assembly 2 is then fixed to the guide rail assembly 1 by screwing in the bolts. Below the screw 16 is an optical axis that can move up and down within the cylindrical column 29. The nut 17 rotates, while the screw 16 moves up and down.

[0042] like Figure 5 and Figure 6 As shown, the propulsion assembly 3 includes a screw jack 19 and a rear seat 20; the rear seat 20 includes a base plate and a vertical plate, with limit blocks 21 provided on both sides of the bottom of the base plate; the vertical plate is fixed to the surface of the base plate, and the screw jack 19 is fixed to the vertical plate via a connecting seat. A lower support 22 connects the lower part of the screw jack 19 to the vertical plate; a pin 23 is connected to the base plate; the propulsion assembly 3 is connected and positioned to the guide rail plate 7 via the pin 23. In the propulsion assembly 3, the screw jack 19 pushes the long pin shaft 25 forward. When the stroke of the screw jack 19 is completed, the pin 23 of the propulsion assembly 3 is removed, and then the propulsion assembly 3 is moved to a forward position and positioned and fixed again with the pin 23. The limit blocks 21 are engaged on both sides of the guide rail plate 7 to prevent the propulsion assembly 3 from tipping over during the application of force.

[0043] This structure is a crawling structure. After the upper support leg assembly 4 and the lower support leg assembly 5 are assembled, the support leg assembly has a height adjustment function, which can ensure that the guide rail assembly 1 is horizontal and the height of the support assembly 2 is consistent with the height of the pin mounting hole. The support assembly 2 also has a height fine adjustment function. When the long pin 25 and the hole are not perfectly aligned, the support assembly 2 can be used for fine adjustment. At the same time, the V-wheel automatically adapts to the deviation distance of the left and right centers, making it possible to assemble the pin. After all adjustments are completed, the long pin 25 is pushed forward by the screw jack 19. When the screw jack 19 has completed its stroke, the pin 23 of the push assembly 3 is pulled out, and then the push assembly 3 is moved to the forward position for positioning and fixing. Then the screw jack 19 continues to rotate. As the long pin 25 moves forward, when the support assembly 2 blocks the rear seat, the support assembly 2 slides out from the side. This crawling method is used, and so on, until the long pin 25 is installed.

[0044] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. It should not be considered that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the present invention, and all of these should be considered to fall within the scope of patent protection determined by the submitted claims.

Claims

1. A crawling assembly device for large-diameter long pin shafts, characterized in that, It includes a guide rail assembly (1), a support assembly (2), a propulsion assembly (3), and height-adjustable support legs; the front half of the guide rail assembly (1) is fixed on the platform (27), and the rear half of the guide rail assembly (1) is fixed to the ground by the height-adjustable support legs; a large workpiece (24) is hinged to the platform (27) by a long pin shaft (25); the guide rail assembly (1) is adjusted to be flush with the platform (27) by the height-adjustable support legs; multiple support assemblies (2) are spaced apart on the guide rail assembly (1); The support assembly (2) includes a mounting base (14), a wheel (12), a support (13), a screw (16), a nut (17), and a key (18); the mounting base (14) is detachably connected to the guide rail assembly; the mounting base (14) includes a flat plate (28) and a cylindrical column (29), the cylindrical column (29) is connected to the flat plate (28), a positioning groove is provided in the cylindrical column (29) of the mounting base (14), and the key (18) is installed in the positioning groove; the bottom of the screw (16) is slidably connected to the cylindrical column (29). Inside; nut (17) is connected to the outer wall of screw (16); the top of screw (16) is connected to support (13); support (13) has placement grooves at both ends, and the wheel axle at the center of wheel (12) is placed on the placement grooves, and the wheel axle is fixed to support (13) by pressure cap (11); the wheel body of wheel (12) is rotatably connected to wheel axle by copper sleeve (15); long pin (25) is placed on wheel (12), and the center of long pin (25) coincides with the center of pin hole on platform (27); The propulsion assembly (3) is slidably connected to the guide rail assembly (1), and the propulsion assembly (3) is connected to the spiral jack (19); the propulsion assembly (3) is connected to the guide rail assembly (1) through the pin (23); The guide rail assembly (1) includes a steel pipe (6) and a guide rail plate (7); the guide rail plate (7) is fixedly installed on the upper surface of the steel pipe (6); the guide rail plate (7) is machined with equidistant mounting holes; multiple short mounting plates (8) and multiple long mounting plates (9) are also installed at intervals at the bottom of the steel pipe (6); the front half of the guide rail assembly (1) is fixed to the surface of the platform (27) through the long mounting plate (9), and the top of the height-adjustable support leg is connected to the short mounting plate (8); the corresponding positions of the steel pipe (6) and the guide rail plate (7) are reserved with the installation interface of the support assembly (2) and the propulsion assembly (3). The installation interface of the support assembly (2) is a side-through structure, and the cylindrical column (29) is located in the side-through installation interface; the plate (28) is provided with a connection hole, and the connection hole on the plate (28) is aligned with the mounting hole on the guide rail plate (7) for connection and fixation.

2. The large-diameter long pin crawling assembly device according to claim 1, characterized in that, A reinforcing rib (10) is welded between the long mounting plate (9) and the side wall of the steel pipe (6).

3. The large-diameter long pin crawling assembly device according to claim 1, characterized in that, The height-adjustable outrigger includes an upper outrigger assembly (4) and a lower outrigger assembly (5); the bottom of the lower outrigger assembly (5) is fixed to the ground, the top of the lower outrigger assembly (5) is sleeved with the bottom of the upper outrigger assembly (4) and fixed by bolts and nuts, and the top of the upper outrigger assembly (4) is connected to the short mounting plate (8) at the bottom of the steel pipe (6).

4. The large-diameter long pin crawling assembly device according to claim 1, characterized in that, The propulsion assembly (3) also includes a rear seat (20), a screw jack (19) fixed on the rear seat (20), and the rear seat (20) is slidably connected to the guide rail plate (7).

5. The large-diameter long pin crawling assembly device according to claim 4, characterized in that, The rear seat (20) includes a base plate and a vertical plate. The vertical plate is fixed to the surface of the base plate, and the spiral jack (19) is fixed to the vertical plate through a connecting seat.

6. The large-diameter long pin crawling assembly device according to claim 5, characterized in that, Limiting blocks (21) are provided on both sides of the bottom of the base plate; the limiting blocks (21) are engaged with both sides of the guide rail plate (7).

7. The large-diameter long pin crawling assembly device according to claim 5, characterized in that, The lower part of the spiral jack (19) is connected to the vertical plate by a lower support (22).

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