Auxiliary tool for installing lower shaft sleeve

Abstract

The invention relates to the related technical field of mechanical installation auxiliary tools, in particular to a lower shaft sleeve installation auxiliary tool which is characterized in that a rotating mechanism is arranged on the upper surface of a bottom plate, a flat plate is arranged on the upper surface of the rotating mechanism, a heating mechanism is arranged on the lower surface of the flat plate, and a fixing mechanism is arranged on the upper surface of the bottom plate. According to the auxiliary tool for installing the lower shaft sleeve, through the arrangement of the heating mechanism, when the auxiliary tool is used, a handle is pulled upwards and drives a connecting rod to move upwards, and when the connecting rod ascends, a connecting plate rotationally connected to the lower portion of the connecting rod can have angle change, so that a fixing plate shrinks inwards, the shaft sleeve penetrates through the fixing plate, then the handle is pressed downwards, and the connecting rod descends; the connecting plate drives the fixing plate to return, the shaft sleeve can be placed on the surface of the fixing plate, at the moment, the heating ring starts to work to heat the shaft sleeve, the inner diameter of the shaft sleeve is properly increased through the thermal expansion and cold contraction principle, follow-up installation operation is facilitated, and installation precision and smoothness are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field related to mechanical installation auxiliary tools, and in particular to a lower shaft sleeve installation auxiliary tool. Background Art

[0002] In the assembly process of modern mechanical equipment, the installation of bushings is an extremely common and critical operation. As an indispensable component in mechanical equipment, the main function of bushings is to provide support for the rotating shaft, reduce friction and position the shaft, thereby ensuring that the entire mechanical equipment can operate stably, efficiently and durably. When assembling these mechanical equipment, the accuracy, reliability and efficiency of bushing installation are directly related to the subsequent operating performance, working accuracy, service life and maintenance cost of the equipment. Therefore, a bushing installation auxiliary tool is particularly needed.

[0003] However, existing lower sleeve installation auxiliary tools often rely on manual operation to install the sleeve to a specified position by hammering, prying with a crowbar, etc. This method is inefficient and easily causes damage to the sleeve and related components, affecting the assembly accuracy and service life of the equipment. Summary of the invention

[0004] The purpose of the new invention is to provide a lower sleeve installation auxiliary tool to solve the problem that the existing lower sleeve installation auxiliary tool proposed in the above background technology often relies on manual operation to install the sleeve to a specified position by hammering, prying with a crowbar, etc. This method is inefficient and easily causes damage to the sleeve and related components, affecting the assembly accuracy and service life of the equipment.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a lower sleeve installation auxiliary tool, comprising a bottom plate, a non-slip pad is fixedly connected to the lower surface of the bottom plate, a rotating mechanism is arranged on the upper surface of the bottom plate, a flat plate is arranged on the upper surface of the rotating mechanism, a sleeve groove is opened on the upper surface of the flat plate, a controller is fixedly connected to the upper surface of the flat plate, a heating mechanism is arranged on the lower surface of the flat plate, and a fixing mechanism is arranged on the upper surface of the bottom plate;

[0006] The heating mechanism includes an outer shell, a heating ring, a fixed sleeve, a connecting rod, a handle, a baffle ring, a damping block, a connecting plate, a fixing plate and a temperature sensor. The lower surface of the plate is fixedly connected to the outer shell, the inner surface of the outer shell is fixedly connected to the heating ring, the inner surface of the outer shell is fixedly connected to the fixing sleeve, the inner surface of the fixing sleeve is slidably connected to the connecting rod, the upper surface of the connecting rod is fixedly connected to the handle, the outer surface of the connecting rod is fixedly connected to the baffle ring, the outer surface of the connecting rod is slidably connected to the damping block, the lower surface of the connecting rod is rotatably connected to the connecting plate, one side surface of the connecting plate is rotatably connected to the fixing plate, and the upper surface of the fixing plate is fixedly connected to the temperature sensor.

[0007] Preferably, the anti-slip pad is symmetrically arranged with respect to the central axis of the base plate, and the inner dimension of the fixing collar matches the outer dimension of the connecting rod.

[0008] Preferably, the damping block is fixedly connected to the bottom plate, and a plurality of connecting plates are provided on the outer surface of the connecting rod.

[0009] Preferably, the connecting rod forms a rotating structure with the connecting plate through a rotating shaft, and the connecting plate forms a rotating structure with the fixing plate through a rotating shaft.

[0010] Preferably, the rotating mechanism includes a cylinder, a first connecting block, a first clamping block, a bearing, a second connecting block and a second clamping block, the upper surface of the base plate is fixedly connected to the cylinder, the upper surface of the cylinder is fixedly connected to the first connecting block, the outer surface of the first connecting block is fixedly connected to the first clamping block, the upper surface of the first connecting block is rotatably connected to the bearing, the upper surface of the bearing is rotatably connected to the second connecting block, and the outer surface of the second connecting block is fixedly connected to the second clamping block.

[0011] Preferably, the first clamping block corresponds to the second clamping block, and the flat plate is fixedly connected to the second connecting block.

[0012] Preferably, the fixing mechanism includes a limit groove, a frame, an intermediate block, a spring groove, a spring, a spring block, a fixed block, a pulling block and a limit block. The upper surface of the base plate is provided with a limit groove, the upper surface of the base plate is fixedly connected to the frame, the inner surface of the frame is fixedly connected to the intermediate block, the inner surface of the frame is provided with a spring groove, one side surface of the intermediate block is fixedly connected to a spring, one end of the spring is fixedly connected to a spring block, one side surface of the spring block is fixedly connected to a fixed block, the upper surface of the fixed block is fixedly connected to the pulling block, and the lower surface of the fixed block is fixedly connected to the limit block.

[0013] Preferably, the inner dimension of the limiting groove matches the outer dimension of the limiting block, and the limiting groove is symmetrically arranged with respect to the central axis of the bottom plate.

[0014] Preferably, the intermediate blocks are symmetrically arranged with respect to the central axis of the frame, and the spring grooves are provided in multiple groups.

[0015] Preferably, the spring block forms a telescopic structure with the middle block through the spring, and two groups of the fixed blocks are provided.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the lower sleeve installation auxiliary tool, through the setting of the heating mechanism, when in use, pulls the handle upwards, and since the connecting rod is slidably connected with the fixed sleeve ring, the handle drives the connecting rod to move upwards, and the retaining ring rises together with the connecting rod. At the same time, the damping block has a certain damping effect on the sliding of the connecting rod, so that the rising process is relatively smooth and can remain relatively still at a specific position. When the connecting rod rises, the connecting plate rotatably connected thereto below will change its angle, because one side of the connecting plate is rotatably connected to the fixed plate, this linkage causes the fixed plate to shrink inwards, and the sleeve passes through the fixed plate. , and then press the handle downward, the connecting rod goes down, the connecting plate drives the fixing plate back to its position, then release the sleeve, the sleeve will be placed on the surface of the fixing plate, and the heating ring starts to work to heat the sleeve. The temperature sensor monitors the temperature around the sleeve in real time and transmits the data to the controller. The controller controls the heating power or heating time of the heating ring according to the preset temperature parameters to ensure that the sleeve is heated to a temperature suitable for installation. The inner diameter of the sleeve is appropriately increased through the principle of thermal expansion and contraction, which is convenient for subsequent installation operations, ensuring the accuracy and smoothness of installation, and avoiding damage to the sleeve due to excessive temperature or uneven heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the side appearance structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the bottom plate and the anti-skid pad cooperating with each other in the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the rotating mechanism of the present invention;

[0020] Figure 4 Schematic diagram of the heating mechanism structure of the present invention

[0021] Figure 5 This is a schematic diagram of the structure of the fixed collar and the connecting rod cooperating with each other in the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the frame and the spring slot cooperating with each other in the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the fixed block and the pull block cooperating with each other in the present invention;

[0024] Figure 8It is a schematic diagram of the structure in which the middle block and the spring cooperate with each other in the present invention.

[0025] In the figure: 1, bottom plate; 2, anti-skid pad; 3, rotating mechanism; 301, cylinder; 302, first connecting block; 303, first clamping block; 304, bearing; 305, second connecting block; 306, second clamping block; 4, flat plate; 5, sleeve groove; 6, controller; 7, heating mechanism; 701, shell; 702, heating ring; 703, fixing sleeve ring; 704, connecting rod; 705, handle; 706, retaining ring; 707, damping block; 708, connecting plate; 709, fixing plate; 710, temperature sensor; 8, fixing mechanism; 801, limiting groove; 802, frame; 803, middle block; 804, spring groove; 805, spring; 806, spring block; 807, fixing block; 808, pulling block; 809, limiting block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the new embodiment of the present invention to clearly and completely describe the technical solutions in the new embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-8 The present invention provides a technical solution: a lower sleeve installation auxiliary tool, comprising a bottom plate 1, a non-slip pad 2 is fixedly connected to the lower surface of the bottom plate 1, a rotating mechanism 3 is arranged on the upper surface of the bottom plate 1, a flat plate 4 is arranged on the upper surface of the rotating mechanism 3, a sleeve groove 5 is opened on the upper surface of the flat plate 4, a controller 6 is fixedly connected to the upper surface of the flat plate 4, a heating mechanism 7 is arranged on the lower surface of the flat plate 4, and a fixing mechanism 8 is arranged on the upper surface of the bottom plate 1;

[0028] The heating mechanism 7 includes a shell 701, a heating ring 702, a fixing ring 703, a connecting rod 704, a handle 705, a retaining ring 706, a damping block 707, a connecting plate 708, a fixing plate 709 and a temperature sensor 710. The lower surface of the flat plate 4 is fixedly connected to the shell 701, the inner surface of the shell 701 is fixedly connected to the heating ring 702, the inner surface of the shell 701 is fixedly connected to the fixing ring 703, the inner surface of the fixing ring 703 is slidably connected to the connecting rod 704, the upper surface of the connecting rod 704 is fixedly connected to the handle 705, and the outer surface of the connecting rod 704 is fixedly connected to the The outer surface of the connecting rod 704 is slidably connected with a damping block 707, the lower surface of the connecting rod 704 is rotatably connected with a connecting plate 708, one side surface of the connecting plate 708 is rotatably connected with a fixing plate 709, and the upper surface of the fixing plate 709 is fixedly connected with a temperature sensor 710. Through the arrangement of the housing 701, the heating ring 702, the fixing sleeve ring 703, the connecting rod 704, the handle 705, the retaining ring 706, the damping block 707, the connecting plate 708, the fixing plate 709 and the temperature sensor 710, when in use, the handle 705 is pulled upwards, and due to the connection between the connecting rod 704 and the fixing sleeve Ring 703 is slidably connected, handle 705 drives connecting rod 704 to move upward, and retaining ring 706 rises together with connecting rod 704. At the same time, damping block 707 has a certain damping effect on the sliding of connecting rod 704, so that the rising process is relatively smooth and can remain relatively still at a specific position. When connecting rod 704 rises, the connecting plate 708 rotatably connected below it will change its angle, because one side of connecting plate 708 is rotatably connected to fixed plate 709. This linkage makes fixed plate 709 shrink inward, the shaft sleeve passes through fixed plate 709, and then presses handle 705 downward, connecting rod 704 descends, and connecting plate 708 drives the fixing plate 709 to return to its original position, then the shaft sleeve is released and placed on the surface of the fixing plate 709, and the heating ring 702 starts to work to heat the shaft sleeve, and the temperature sensor 710 monitors the temperature around the shaft sleeve in real time and transmits the data to the controller 6, and the controller 6 controls the heating power or heating time of the heating ring 702 according to the preset temperature parameters to ensure that the shaft sleeve is heated to a temperature suitable for installation, and the inner diameter of the shaft sleeve is appropriately increased through the principle of thermal expansion and contraction, which is convenient for subsequent installation operations, ensures the accuracy and smoothness of installation, and avoids damage to the shaft sleeve due to excessive temperature or uneven heating.

[0029] Furthermore, the anti-slip pad 2 is symmetrically arranged with respect to the central axis of the base plate 1, and the inner dimension of the fixing ring 703 matches the outer dimension of the connecting rod 704. Through the setting of the anti-slip pad 2, when in use, the anti-slip pad 2 can increase the friction between the base plate 1 and the placement plane, thereby preventing the auxiliary tool from sliding during work.

[0030] Furthermore, the damping block 707 is fixedly connected to the base plate 1, and a plurality of connecting plates 708 are arranged on the outer surface of the connecting rod 704. Through the arrangement of the damping block 707, when in use, the damping block 707 can apply a damping force to the connecting rod 704, so that the connecting rod 704 is more stable when being pulled out. At the same time, the connecting rod 704 can remain relatively stable, which is more convenient when placing the sleeve.

[0031] Furthermore, the connecting rod 704 forms a rotating structure with the connecting plate 708 through the rotating shaft, and the connecting plate 708 forms a rotating structure with the fixed plate 709 through the rotating shaft. Through the setting of the connecting plate 708, when in use, the size of the connecting plate 708 is smaller than the size of the fixed plate 709, making the connecting plate 708 more flexible inside the shell 701 and not stuck.

[0032] Furthermore, the rotating mechanism 3 includes a cylinder 301, a first connecting block 302, a first clamping block 303, a bearing 304, a second connecting block 305, and a second clamping block 306. The upper surface of the bottom plate 1 is fixedly connected with the cylinder 301, the upper surface of the cylinder 301 is fixedly connected with the first connecting block 302, the outer surface of the first connecting block 302 is fixedly connected with the first clamping block 303, the upper surface of the first connecting block 302 is rotatably connected with the bearing 304, the upper surface of the bearing 304 is rotatably connected with the second connecting block 305, and the outer surface of the second connecting block 305 is fixedly connected with the second clamping block 306. By setting the cylinder 301, the first connecting block 302, the first clamping block 303, the bearing 304, the second connecting block 305, and the second clamping block 306, when using When the plate 4 is rotated, the cylinder 301 is started to push the first connecting block 302 to move upward, and the second connecting block 305 and the plate 4 will move upward accordingly, so that the height position of the plate 4 can be adjusted, and sleeves of different specifications can be installed, thereby enhancing the overall applicability of the tool. When the plate 4 needs to be rotated, the plate 4 is pushed, and the connection state between the first clamping block 303 and the second clamping block 306 is released, and the plate 4 and the second connecting block 305 can rotate around the axis of the bearing 304. After the plate 4 is rotated to a suitable angular position, the first clamping block 303 and the second clamping block 306 will re-engage with each other. This engagement allows the plate 4 to stably maintain the current rotated position without rotating at will, thereby improving the accuracy and reliability of the sleeve installation.

[0033] Furthermore, the first clamping block 303 and the second clamping block 306 correspond to each other, and the flat plate 4 is fixedly connected with the second connecting block 305. Through the setting of the first clamping block 303 and the second clamping block 306, when in use, the first clamping block 303 and the second clamping block 306 engage with each other, so that the flat plate 4 can be stably maintained in the current rotated position and will not rotate at will, thereby improving the accuracy and reliability of the sleeve installation.

[0034] Furthermore, the fixing mechanism 8 includes a limiting groove 801, a frame 802, an intermediate block 803, a spring groove 804, a spring 805, a spring block 806, a fixed block 807, a pulling block 808 and a limiting block 809. The upper surface of the bottom plate 1 is provided with a limiting groove 801, the upper surface of the bottom plate 1 is fixedly connected with the frame 802, the inner surface of the frame 802 is fixedly connected with the intermediate block 803, the inner surface of the frame 802 is provided with a spring groove 804, a side surface of the intermediate block 803 is fixedly connected with a spring 805, one end of the spring 805 is fixedly connected with the spring block 806, a side surface of the spring block 806 is fixedly connected with a fixed block 807, the upper surface of the fixed block 807 is fixedly connected with the pulling block 808, the lower surface of the fixed block 807 is fixedly connected with the limiting block 809, and the limiting groove 801, the frame 802, the intermediate block 803, the spring groove 804, the spring block 805, the spring block 806, the pulling block 808, the limiting block 809, and the limiting groove 801, the frame 802, the intermediate block 803, the spring groove 804, the spring block 806, the pulling block 808 ... The arrangement of spring 805, spring block 806, fixed block 807, pulling block 808 and limiting block 809, when in use, pulling the pulling block 808 will make the fixed block 807 overcome the elastic force of the spring 805 and move, as the fixed block 807 moves, the distance between the two groups of relatively arranged fixed blocks 807 increases, thereby freeing up enough space for placing the components that need to install the shaft sleeves, and then place the components to be installed with the shaft sleeves at a predetermined position between the two groups of fixed blocks 807, and then release the pulling block 808, the spring 805 rebounds, driving the fixed block 807 to move, the two groups of fixed blocks 807 gradually approach and apply clamping force to the components, thereby firmly clamping the components in the middle position, the spring groove 804 opened on the inner side of the frame 802 can play a certain guiding and accommodating role for the spring 805 during the extension and retraction process, ensuring that the spring 805 retracts and retracts along the predetermined direction, and maintaining the stability of the entire mechanism.

[0035] Furthermore, the inner dimension of the limit groove 801 is consistent with the outer dimension of the limit block 809, and the limit groove 801 is symmetrically arranged with respect to the central axis of the base plate 1. Through the arrangement of the limit groove 801 and the limit block 809, when in use, the limit block 809 slides inside the limit groove 801, and the limit groove 801 limits the limit block 809, so that the movement of the fixed block 807 is more stable.

[0036] Furthermore, the middle block 803 is symmetrically arranged with respect to the central axis of the frame 802, and a plurality of spring slots 804 are provided. Through the arrangement of the spring slots 804, when in use, the middle block 803 is fixedly connected to the frame 802, and when the spring 805 is stretched or rebounded, it will not tilt or twist due to excessive force on one side, thereby ensuring the stability and reliability of the fixation.

[0037] Furthermore, the spring block 806 forms a telescopic structure with the middle block 803 through the spring 805, and the fixed block 807 is provided with two groups. Through the setting of the spring block 806, when in use, the two groups of spring blocks 806 are connected with the spring 805, so that the two sides of the fixed block 807 are affected by the elastic force of the spring 805 at the same time, making the fixed block 807 clamped more stably.

[0038] Working principle: first pull the pull block 808, which will make the fixed block 807 overcome the elastic force of the spring 805 and move. As the fixed block 807 moves, the distance between the two sets of fixed blocks 807 that were originally set opposite to each other increases, thereby freeing up enough space for placing the component that needs to install the shaft sleeve. Then, the component to be installed with the shaft sleeve is placed at the predetermined position between the two sets of fixed blocks 807, and then release the pull block 808. The spring 805 rebounds and drives the fixed block 807 to move. The two sets of fixed blocks 807 gradually approach and apply clamping force to the component, thereby firmly clamping the component in the middle position. The limit block 809 slides inside the limit groove 801, and the limit groove 801 limits the limit block 809, making the movement of the fixed block 807 more stable. The spring groove 804 can play a certain guiding and accommodating role for the spring 805 during the extension and retraction process, ensuring that the spring 805 retracts and retracts along the predetermined direction to maintain the stability of the entire mechanism. Then, the handle 705 is pulled upward. Since the connecting rod 704 is slidably connected to the fixed collar 703, the handle 705 drives the connecting rod 704 to move upward, and the retaining ring 706 rises together with the connecting rod 704. At the same time, the damping block 707 has a certain damping effect on the sliding of the connecting rod 704, so that the rising process is relatively smooth and can remain relatively still at a specific position. When the connecting rod 704 rises, the connecting plate 708 rotatably connected thereto will change its angle. Because one side of the connecting plate 708 is rotatably connected to the fixed plate 709, this linkage causes the fixed plate 709 to retract inward. The shaft sleeve is shrunk, and the shaft sleeve passes through the fixing plate 709. Then the handle 705 is pressed downward, the connecting rod 704 drops, and the connecting plate 708 drives the fixing plate 709 to return. At this time, the shaft sleeve is released, and the shaft sleeve will be placed on the surface of the fixing plate 709. At this time, the heating ring 702 starts to work to heat the shaft sleeve. The temperature sensor 710 monitors the temperature around the shaft sleeve in real time and transmits the data to the controller 6. The controller 6 controls the heating power or heating time of the heating ring 702 according to the preset temperature parameters to ensure that the shaft sleeve is heated to a temperature suitable for installation. The inner diameter of the shaft sleeve is appropriately increased through the principle of thermal expansion and contraction, which is convenient for subsequent installation operations, ensures the accuracy and smoothness of installation, and avoids damage to the shaft sleeve due to excessive temperature or uneven heating. Then the cylinder 301 is started. Push the first connecting block 302 to move upward, and the second connecting block 305 and the plate 4 will move upward accordingly, so as to adjust the height position of the plate 4, align the sleeve with the component where the sleeve needs to be installed, pull the handle 705 again, the heated sleeve will slide from the surface of the fixing plate 709, enter the component, and install the sleeve. If it is not installed in place, push the plate 4, the connection state between the first clamping block 303 and the second clamping block 306 will be released, and the plate 4 and the second connecting block 305 can rotate around the axis of the bearing 304. After the plate 4 rotates to a suitable angle, the first clamping block 303 and the second clamping block 306 will re-engage with each other. This engagement allows the plate 4 to stably maintain the current rotated position.By extending the sleeve through the sleeve groove 5, the sleeve can be pressed tightly, which improves the accuracy and reliability of the sleeve installation.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lower sleeve installation auxiliary tool, comprising a bottom plate (1), characterized in that: The lower surface of the bottom plate (1) is fixedly connected to an anti-slip pad (2), the upper surface of the bottom plate (1) is provided with a rotating mechanism (3), the upper surface of the rotating mechanism (3) is provided with a flat plate (4), the upper surface of the flat plate (4) is provided with a sleeve groove (5), the upper surface of the flat plate (4) is fixedly connected to a controller (6), the lower surface of the flat plate (4) is provided with a heating mechanism (7), and the upper surface of the bottom plate (1) is provided with a fixing mechanism (8); The heating mechanism (7) comprises a shell (701), a heating ring (702), a fixing ring (703), a connecting rod (704), a handle (705), a retaining ring (706), a damping block (707), a connecting plate (708), a fixing plate (709) and a temperature sensor (710); the lower surface of the flat plate (4) is fixedly connected to the shell (701); the inner surface of the shell (701) is fixedly connected to the heating ring (702); the inner surface of the shell (701) is fixedly connected to the fixing ring (703); the fixing ring (703) is fixedly connected to the inner surface of the shell (701); ) is slidably connected to the inner surface of the connecting rod (704), a handle (705) is fixedly connected to the upper surface of the connecting rod (704), a retaining ring (706) is fixedly connected to the outer surface of the connecting rod (704), a damping block (707) is slidably connected to the outer surface of the connecting rod (704), a connecting plate (708) is rotatably connected to the lower surface of the connecting rod (704), a fixed plate (709) is rotatably connected to one side surface of the connecting plate (708), and a temperature sensor (710) is fixedly connected to the upper surface of the fixed plate (709).

2. A lower sleeve installation auxiliary tool according to claim 1, characterized in that: The anti-slip pad (2) is symmetrically arranged with respect to the central axis of the bottom plate (1), and the inner dimension of the fixing ring (703) is consistent with the outer dimension of the connecting rod (704).

3. The lower sleeve installation auxiliary tool according to claim 1, characterized in that: The damping block (707) is fixedly connected to the bottom plate (1), and a plurality of connecting plates (708) are arranged on the outer surface of the connecting rod (704).

4. The lower sleeve installation auxiliary tool according to claim 1, characterized in that: The connecting rod (704) forms a rotating structure with the connecting plate (708) via a rotating shaft, and the connecting plate (708) forms a rotating structure with the fixing plate (709) via a rotating shaft.

5. The lower sleeve installation auxiliary tool according to claim 1, characterized in that: The rotating mechanism (3) comprises a cylinder (301), a first connecting block (302), a first clamping block (303), a bearing (304), a second connecting block (305) and a second clamping block (306); the upper surface of the base plate (1) is fixedly connected to the cylinder (301); the upper surface of the cylinder (301) is fixedly connected to the first connecting block (302); the outer surface of the first connecting block (302) is fixedly connected to the first clamping block (303); the upper surface of the first connecting block (302) is rotatably connected to the bearing (304); the upper surface of the bearing (304) is rotatably connected to the second connecting block (305); and the outer surface of the second connecting block (305) is fixedly connected to the second clamping block (306).

6. A lower sleeve installation auxiliary tool according to claim 5, characterized in that: The first clamping block (303) corresponds to the second clamping block (306), and the flat plate (4) is fixedly connected to the second connecting block (305).

7. The lower sleeve installation auxiliary tool according to claim 1, characterized in that: The fixing mechanism (8) comprises a limiting groove (801), a frame (802), an intermediate block (803), a spring groove (804), a spring (805), a spring block (806), a fixing block (807), a pulling block (808) and a limiting block (809); the limiting groove (801) is provided on the upper surface of the bottom plate (1); the frame (802) is fixedly connected to the upper surface of the bottom plate (1); the intermediate block (803) is fixedly connected to the inner surface of the frame (802); The inner surface of the frame (802) is provided with a spring groove (804); a spring (805) is fixedly connected to one side surface of the intermediate block (803); one end of the spring (805) is fixedly connected to a spring block (806); a fixed block (807) is fixedly connected to one side surface of the spring block (806); a pulling block (808) is fixedly connected to the upper surface of the fixed block (807); and a limiting block (809) is fixedly connected to the lower surface of the fixed block (807).

8. A lower sleeve installation auxiliary tool according to claim 7, characterized in that: The inner dimension of the limiting groove (801) matches the outer dimension of the limiting block (809), and the limiting groove (801) is symmetrically arranged with respect to the central axis of the bottom plate (1).

9. The lower sleeve installation auxiliary tool according to claim 7, characterized in that: The intermediate blocks (803) are symmetrically arranged with respect to the central axis of the frame (802), and the spring slots (804) are arranged in multiple groups.

10. The lower sleeve installation auxiliary tool according to claim 7, characterized in that: The spring block (806) forms a telescopic structure with the middle block (803) through the spring (805), and two groups of the fixed blocks (807) are provided.

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