Combined device of lifting component and support

Abstract

The utility model discloses a combined device of a lifting component and a bracket, and belongs to the technical field of lifting components. Which comprises a top column part, a base part and a hydraulic lifting part, and is characterized by further comprising a self-locking pin shaft part, the top column part is provided with an adjusting hole, the base part is provided with a positioning hole, the self-locking pin shaft part comprises a sleeve and a rotary part, the sleeve and the positioning hole are coaxially installed, the rotary part comprises a shifting part, a pin shaft and a spring, the pin shaft is arranged in an inner hole of the sleeve, and the spring is arranged in the inner hole of the sleeve. An inner hole of the sleeve and the pin shaft are respectively provided with a first stop surface and a second stop surface for the spring, one end of the pin shaft is fixedly provided with a shifting piece, the other end of the pin shaft is an extending end and is provided with an inclined surface, when the shifting piece abuts against a locking point of the abutting end of the sleeve, the extending end of the pin shaft extends into the adjusting hole to lock the jacking column part and the base part, and at the moment, the shifting piece abuts against the locking point of the abutting end of the sleeve. The inclined surface is positioned at the lower part of the extending end, and orthographic projections of the adjusting hole and the inclined surface on the bottom surface of the base are crossed. The device has the advantages of being capable of being manually loosened in a no-load mode, automatically loosened in a load lifting mode and automatically locked to play a role in fixing and supporting.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting components, and in particular relates to a combination device of a lifting component and a bracket. Background Art

[0002] Lifting components are usually used to lift various loads. During the long-term lifting of heavy objects, the hydraulic oil in the lifting components may leak and cause the load to slowly drop, resulting in the load not being stably fixed at a fixed height. Therefore, the industry has adopted a solution that uses lifting components and brackets to support the load. First, the lifting components are used to lift the heavy objects to a specified height, and then the brackets are used for support. In this process, although the two components are lifted together, it is necessary to pay attention to the height of the bracket to ensure that the bracket can play a supporting role, and during the descent process, the bracket fixing structure needs to be manually loosened so that the lifting component can be lowered. The operation is cumbersome and the work efficiency in all aspects is relatively low.

[0003] In view of the above-mentioned prior art, it is necessary to reasonably improve the combined structure of the existing lifting component and the bracket. To this end, the applicant has made a useful design, and the technical solution to be introduced below is produced under this background. Utility Model Content

[0004] The task of the utility model is to provide a combination device of a lifting component and a bracket, which is a large base plate structure that is not limited to a single section and can be manually pulled up when unloaded, automatically loosened when loaded, and automatically locked to play a fixed supporting role.

[0005] The task of the utility model is accomplished in this way. A combination device of a lifting component and a bracket includes a base component and a top column component and a hydraulic lifting component both installed on the base component. The hydraulic lifting component is connected to the top column component and can drive the top column component to lift the load, thereby driving the top column component to rise or fall relative to the base component. The characteristics are: the combination device also includes a self-locking pin shaft component, the top column component has a plurality of adjustment holes, the base component has a positioning hole, the self-locking pin shaft component includes a sleeve and a rotating component, the sleeve and the positioning hole are coaxially installed, the rotating component includes a toggle member, a pin shaft and a spring, and the pin shaft The shaft is arranged in the inner hole of the sleeve, the inner hole of the sleeve is provided with a first stop surface, the pin shaft is provided with a second stop surface, the spring is sleeved on the pin shaft and is located between the first stop surface and the second stop surface, a toggle piece is fixed on one end of the pin shaft, the other end is a protruding end, and a slope is processed on the protruding end, when the toggle piece abuts against the locking point of the abutting end of the sleeve away from the base component, the protruding end of the pin shaft extends into the adjusting hole under the elastic force of the spring, locking the top column component and the base component, at this time, the slope is located at the lower part of the protruding end, and the orthographic projection of the adjusting hole on the bottom surface of the base intersects with the orthographic projection of the slope on the bottom surface of the base.

[0006] In a specific embodiment of the utility model, a release point is also provided on the abutting end. When the toggle member rotates to the release point, the toggle member pulls the pin shaft so that the second stop surface overcomes the force of the spring and leans against the first stop surface. The protruding end of the pin shaft is completely separated from the adjustment hole, and the top column component can move freely relative to the base component.

[0007] In another specific embodiment of the utility model, the top column component includes a support column, a plurality of adjustment holes are arranged on the support column, the base component includes a support column sleeve, the positioning hole is arranged on the support column sleeve, the support column is inserted into the support column sleeve, the positioning hole is aligned with one of the plurality of adjustment holes and the support column and the support column sleeve are locked by a self-locking pin shaft component.

[0008] In another specific embodiment of the utility model, the base component includes a base, the support column sleeve is vertically fixed on the base, and the base is a large bottom plate structure with several fixed blocks stamped thereon, and the fixed blocks fix the base of the hydraulic lifting component on the base.

[0009] In another specific embodiment of the present invention, the top column component further includes a connecting portion, which is located on a side of the support column and is fixedly connected to the piston rod of the hydraulic lifting component via a fastener.

[0010] In another specific embodiment of the utility model, the outer ring of the sleeve is processed with an external thread, the external thread is screwed into the positioning hole to achieve a threaded connection, and a fastening nut is fastened to the external thread to fix the sleeve.

[0011] In a further specific embodiment of the present invention, the toggle member is a handle fixed on the outer circle of the pin shaft or a pin shaft penetrated through one end of the pin shaft.

[0012] In a more specific embodiment of the utility model, the first stop surface is a step surface of a stepped hole extending from the inner hole of the sleeve toward the center line and facing the spring, and the second stop surface is a step surface of a boss extending from the pin shaft toward the radial outside and facing the spring, and one end of the spring is pressed against the step surface of the stepped hole, and the other end is pressed against the step surface of the boss.

[0013] In yet another specific embodiment of the present invention, the end surface of the abutting end of the sleeve is a curved surface, and the curved surface passes through a locking point and a release point, and a positioning pit for positioning the toggle member is provided at the release point.

[0014] In yet another specific embodiment of the present invention, the top column component is provided with multiple support columns, and the lower support column is provided with a positioning hole matching the adjustment hole of the upper support column and a self-locking pin shaft component for locking the two support columns.

[0015] The utility model has the beneficial effects of adopting the above structure:

[0016] First, when the combined device is unloaded, it can overcome the resistance of the hydraulic components by pulling up the top column components to achieve unloaded lifting, or it can drive the top column components to lift through the hydraulic lifting components;

[0017] Second, the lower end of the pin is a half-bevel structure. During the lifting process, it can be automatically loosened as long as the operating force is greater than the resistance of the pin and the spring. However, when pressed down, due to the matching spring structure, the pin can be automatically reset to the locked state, i.e., the AA position, when the hole positions are aligned. Therefore, the position of the toggle piece of the rotating component can be used to determine whether the self-locking pin component is locked with the support column. The unilateral self-locking fixed structure is easier to operate without affecting the strength.

[0018] Third, the base of the base component is formed by stamping to realize the function of automatically fixing the hydraulic lifting component, and can be quickly disassembled and assembled when used and replaced without the need for special tools;

[0019] Fourth, the 360° operating structure of the hydraulic lifting component enables operation at any angle; it has an automatic reset function, and is locked in the natural state, which is more stable and safe;

[0020] Fifth, the hydraulic lifting components and brackets are integrated and installed on the base, which is a large bottom plate structure and is suitable for a wider range of scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of an embodiment of the combined device of the utility model;

[0022] Figure 2 An exploded view of an embodiment of the combined device of the utility model;

[0023] Figure 3 It is a schematic diagram of the assembly of the top column component, the base component, and the self-locking pin shaft component of the combined device of the utility model;

[0024] Figure 4 for Figure 3 A partial enlarged view of the pin extending into the adjustment hole;

[0025] Figure 5 for Figure 3 A partial enlarged view of the support column in the middle being pulled upward to push the pin out of the adjustment hole;

[0026] Figure 6 It is a three-dimensional diagram of the sleeve of the utility model;

[0027] Figure 7a This is a state diagram of the toggle member of an embodiment of the combined device of the utility model when it is in the AA position;

[0028] Figure 7b This is a state diagram of the toggle member of an embodiment of the combined device of the utility model when it is in the BB position;

[0029] Figure 8 It is an exploded view of another embodiment of the combined device of the utility model;

[0030] Fig. 9 It is an exploded view of another embodiment of the combined device of the utility model.

[0031] In the figure: 1. top column component, 11. support column, 111. adjustment hole, 12. support part, 13. connection part, 131. connection hole, 132. fastener;

[0032] 2. base component, 21. base, 211. fixing block, 2111. bayonet, 22. support column sleeve, 221. positioning hole, 222. self-locking component mounting boss;

[0033] 3. Hydraulic lifting parts, 31. Piston rod, 32. Handle, 33. Jacket, 34. Oil return valve, 35. Base;

[0034] 4. Self-locking pin shaft component, 41. sleeve, 411. first stop surface, 4111. stepped hole, 412. abutment end, 4120. curved surface, 4121. locking point, 4122. release point, 41221. positioning pit, 413. external thread, 42. fastening nut, 43. rotating component, 431. toggle member, 432. pin shaft, 4321. second stop surface, 43211. boss, 4322. protruding end, 43221. inclined surface, 433. spring. DETAILED DESCRIPTION

[0035] The specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0036] In the following description, all concepts related to directionality or orientation such as up, down, left, right, front and back are based on the positions shown in the corresponding drawings. They are only used to facilitate the description of the technical solution provided by the utility model and simplify the description in conjunction with the drawings, and therefore cannot be understood as a special limitation on the technical solution provided by the utility model. Example 1

[0037] See also Figure 1 and Figure 2 The utility model relates to a combination device of a lifting component and a bracket, including a top column component 1, a base component 2, a hydraulic lifting component 3 and a self-locking pin shaft component 4. The top column component 1 is inserted in the base component 2 and can rise and fall relative to the base component 2. The self-locking pin shaft component 4 locks the top column component 1 and the base component 2. The hydraulic lifting component 3 is fixed on the base component 2 and drives the top column component 1 to lift the load.

[0038] like Figure 2 As shown, the top column component 1 includes a support column 11, a support portion 12 and a connection portion 13. The support column 11 is inserted into the base component 2 and can rise and fall relative to the base component 2. The support portion 12 is located at the top of the top column component 1. In this embodiment, the support portion 12 is located at the top of the support column 11 and is used to carry heavy objects. The connection portion 13 is located on the side of the support column 11 and is fixedly connected to the piston rod 31 of the hydraulic lifting component 3 by fasteners. Specifically, a connection hole 131 is provided on the connection portion 13. The fastener 132 is used to pass through the gasket and the connection hole 131 in sequence and then screwed into the top of the piston rod 31 of the hydraulic lifting component 3 to achieve the fixed connection between the connection portion 13 and the hydraulic lifting component 3. A plurality of adjustment holes 111 are provided on the support column 11 of the top column component 1. The adjustment holes 111 are not limited to round holes, and can be long holes, etc., and any structure that does not affect the strength is acceptable. The plurality of adjustment holes 111 are arranged in a vertical direction.

[0039] like Figure 2 As shown, the base component 2 includes a base 21 and a support column sleeve 22. The support column sleeve 22 is vertically fixed on the base 21. The base 21 is a large bottom plate structure, on which several fixing blocks 211 are stamped and formed, preferably four in this embodiment. The support column 11 is inserted into the support column sleeve 22, and a positioning hole 221 is provided on the support column sleeve 22. The positioning hole 221 is aligned with one of the multiple adjustment holes 111 on the top column component 1 and the support column 11 and the support column sleeve 22 are locked by the self-locking pin shaft component 4, so as to adjust the height of the support column 11 extending out of the base component 2. In this embodiment, the support column sleeve 22 is also provided with a self-locking component mounting boss 222. The positioning hole 221 passes through the self-locking component mounting boss 222 until it extends to the inside of the support column sleeve 22. The self-locking component mounting boss 222 can be welded to the support column sleeve 22.

[0040] like Figure 2 As shown, four fixing blocks 211 formed by stamping on the base member 2 fix the base 35 of the hydraulic lifting member 3 on the base 21. Specifically, a bayonet 2111 is provided on the fixing block 211, and the base 35 of the hydraulic lifting member 3 is inserted into the bayonet 2111 to fix the two. In addition to stamping, the base 35 of the hydraulic lifting member 3 can also be fixed by a structure such as an open groove.

[0041] like Figure 2 As shown, the hydraulic lifting component 3 includes a piston rod 31, a handle 32, a cylinder, a jacket 33, and an oil return valve 34. The hydraulic lifting component 3 has a 360° operating structure to achieve operation at any angle. When the handle 32 is pressed, the hydraulic oil can be pumped from the jacket 33 into the cylinder, thereby lifting the piston rod 31. When the piston rod 31 is at a certain height, the oil return valve 34 of the hydraulic lifting component 3 is always in a closed state. When the hydraulic lifting component 3 needs to be reset, the oil return valve 34 is opened, and the hydraulic oil can return from the cylinder to the jacket 33. At this time, the piston rod 31 of the hydraulic lifting component 3 can be lowered. Since the above-mentioned hydraulic lifting component 3 belongs to the existing well-known technology, the specific structure is not repeated here.

[0042] like Figure 2 , Figures 3 to 6As shown, the self-locking pin shaft component 4 includes a sleeve 41, a fastening nut 42, and a rotating component 43. The rotating component 43 is installed in the sleeve 41 and moves axially along the sleeve 41. The outer ring of the sleeve 41 is processed with an external thread 413, and the external thread 413 is screwed into the positioning hole 221 to achieve a threaded connection, and the fastening nut 42 is fastened to the external thread 413 to fix the sleeve 41. At this time, if one of the multiple adjustment holes 111 is aligned with the positioning hole 221, then one end of the rotating component 43 can extend into the interior of the support column 11 to achieve the positioning and locking of the support column 11. When the rotating component 43 is operated so that one end of it is pulled out of the adjustment hole 111 of the support column 11, the height of the support column 11 can be adjusted.

[0043] The rotating component 43 includes a toggle member 431, a pin 432 and a spring 433. The pin 432 is disposed in the inner hole of the sleeve 41, the inner hole of the sleeve 41 is provided with a first stop surface 411 for the spring 433, the pin 432 is provided with a second stop surface 4321 for the spring 433, the spring 433 is sleeved on the pin 432 and is located between the first stop surface 411 and the second stop surface 4321, and the toggle member 431 is fixed to one end of the pin 432 protruding out of the first stop surface 411. The sleeve 41 has a locking point 4121 and a release point 4122 on the abutting end 412 away from the base member 2. When the abutting end 4121 is pressed against the locking point 4121, the other end of the pin 432 close to the base member 2, i.e., the protruding end 4322, extends into the adjustment hole 111 under the elastic force of the spring 433. Figure 4 and Figure 7a At this time, the toggle member 431 is defined to be in the AA position. In this embodiment, the toggle member 431 is just in the Figure 7a The left horizontal position in .

[0044] When the toggle member 431 is pressed against the release point 4122, the toggle member 431 pulls the pin 432 so that the second stop surface 4321 overcomes the force of the spring 433 and moves toward the first stop surface 411, and the protruding end 4322 of the pin 432 completely leaves the adjustment hole 111, and the support column 11 can move freely relative to the support column sleeve 22. Figure 7b As shown, at this time, the toggle member 431 is defined to be in the BB position. In this embodiment, the toggle member 431 is just in the right horizontal position in the figure, and the pin shaft 432 and the support column 11 are completely disengaged.

[0045] like Figure 2 , Figures 3 to 5 As shown, in this embodiment, the toggle member 431 is preferably a handle fixed on the outer circle of the pin 432 , and the toggle member 431 can also be other components fixed on one end of the pin 432 , such as a pin inserted through one end of the pin 432 .

[0046] like Figure 4 As shown, in this embodiment, the first stop surface 411 is a stepped surface of the stepped hole 4111 extending from the inner hole of the sleeve 41 to the center line and facing the spring 433, and the second stop surface 4321 is a stepped surface of the boss 43211 extending from the pin 432 to the radial outside and facing the spring 433, and one end of the spring 433 is pressed against the stepped surface of the stepped hole 4111, and the other end is pressed against the stepped surface of the boss 43211. The spring 433 is installed between the first stop surface 411 and the second stop surface 4321, so that the pin 432 automatically extends outward under the action of the spring force. The first stop surface 411 can also be an inner retaining ring, and the second stop surface 4321 can also be an outer retaining ring, or the first stop surface 411 and the second stop surface 4321 are other parts that block the spring 433.

[0047] like Figure 2 , Figures 3 to 5 As shown, a slope 43221 is processed on the protruding end 4322 of the pin shaft 432 close to the support column 11. Specifically, when the toggle member 431 is pressed against the locking point 4121, that is, when the toggle member 431 is in the AA position, the slope 43221 is located at the lower part of the protruding end 4322 facing the adjustment hole 111, and the orthographic projection of the adjustment hole 111 on the bottom surface of the base 21 intersects with the orthographic projection of the slope 43221 on the bottom surface of the base 21.

[0048] When the support column 11 is pulled up, the applied operating force overcomes the resistance of the pin 432 and the spring 433, so that the lower part of the adjustment hole 111 pushes the pin 432 to a position away from the support column 11 by pushing the inclined surface 43221, and then the protruding end 4322 of the pin 432 abuts against the side wall of the support column 11 that is rising. Figure 5 Until the required adjustment hole 111 is aligned with the pin 432, at this time, the pin 432 automatically extends into the adjustment hole 111 under the elastic force of the spring 433 to block the movement of the support column 11 and achieve locking. At this time, the toggle member 431 automatically returns to the AA position, as shown in FIG. Figure 4 Like this, just can conveniently lift the support column 11 to the required position by lifting the support column 11.

[0049] like Figure 4 and Figure 6 As shown, when the toggle member 431 is rotated to the locking point 4121, the upper part of the protruding end 4322 facing the adjustment hole 111 is not provided with the inclined surface 43221. If the pin shaft 432 is not adjusted to a position disengaged from the support column 11 by rotating the toggle member 431, the support column 11 cannot move downward, thus achieving the purpose of automatic locking by pressing down.

[0050] In short, the toggle member 431 is in the AA position, which is in the lowered locking state and can play a fixed support role; the other positions are in the unlocked state and cannot play a fixed support role. The self-locking pin shaft component 4 has the functions of being manually loosened, automatically loosened by load lifting, and automatically locked by pressing down.

[0051] like Figure 6 As shown, the end surface of the abutting end 412 of the sleeve 41 is a curved surface 4120. The curved surface 4120 passes through a locking point 4121 and a release point 4122. A positioning pit 41221 for positioning the toggle member 431 is provided on the release point 4122, which facilitates the stable positioning of the toggle member 431 and prevents it from sliding toward the locking point 4121, while facilitating the adjustment of the supporting component 1.

[0052] Please continue reading Figures 1 to 7b The functional principle of the combined device of a lifting component and a bracket described in the utility model is as follows:

[0053] When using this product, when it is unloaded, the support column 11 of the top column component 1 can be manually pulled up. In this process, the resistance of the hydraulic lifting component 3 needs to be overcome so that the toggle member 431 leaves the AA position and the support column 11 is quickly lifted to a suitable position. Then the hydraulic lifting component 3 can be operated to continue to lift the top column component 1. When another designated adjustment hole 111 on the top column component 1 is aligned with the pin 432, the pin 432 automatically enters the adjustment hole 111 under the elastic force of the spring 433 to achieve locking. The toggle member 431 automatically returns to the AA position with the action of the pin 432. At this time, the pin 432 plays a supporting and fixing role.

[0054] During the process of operating the hydraulic lifting component 3 and driving the top column component 1 to lift, since the self-locking pin shaft component 4 has the functions of being manually loosened, automatically loosened by load lifting, and automatically locked by pressing down, the lifting will not be hindered by the hole position on the top column component 1. When the appropriate height is reached, even if it is not in the AA position, after the oil return valve 34 is released, after descending a short distance, that is, when the adjustment hole 111 of the top column component 1 is aligned with the positioning hole 221 on the base component 2, under the action of the self-locking pin shaft component 4, the toggle member 431 can also automatically reset to the AA position.

[0055] When the product is finished using and the support column 11 needs to be pressed down, the toggle member 431 of the rotating component 43 needs to be manually rotated to the BB position, and then the support column 11 is pressed down to the designated position, and finally the toggle member 431 is restored to the AA position. Example 2

[0056] as follows Figure 8 and Fig. 9As shown, the top column component 1 is not limited to having one support column 11, but may also have two, three, or even more support columns, each representing a level, so the top column component 1 may have multiple levels. The embodiment is described by taking two support columns 11 as an example.

[0057] The support portion 12 of the top column component 1 is located on the upper part of the uppermost support column 11, and the connecting portion 13 can be arranged on any one of the support columns 11, for example Figure 8 As shown, the connection part 13 is arranged on the lowest support column 11, so the top column components 1 of the remaining sections can be quickly pulled up to the appropriate position manually, so as to achieve rapid lifting to the appropriate position. Fig. 9 As shown, the connecting portion 13 is arranged on the uppermost support column 11, and its operation mode is the same as that of the single section. The next section support column 11 is provided with a self-locking component mounting boss 222, a positioning hole 221, and a self-locking pin shaft component 4 for locking the two sections of the support column 11, which cooperates with the adjustment hole 111 of the previous section support column 11. When one of the adjustment holes 111 of the previous section support column 11 is aligned with the positioning hole 221 of the next section support column 11, the self-locking pin shaft component 4 locks the two sections of the support column 11. Other parts and their connection relationships are the same as those in Example 1.

Claims

1. A combined device of a lifting component and a bracket, comprising a base component (2) and a top column component (1) and a hydraulic lifting component (3) both mounted on the base component (2), wherein the hydraulic lifting component (3) is connected to the top column component (1) and can drive the top column component (1) to lift a load, thereby driving the top column component (1) to rise or fall relative to the base component (2), characterized in that: The combined device also includes a self-locking pin shaft component (4), the top column component (1) has a plurality of adjustment holes (111), the base component (2) has a positioning hole (221), the self-locking pin shaft component (4) includes a sleeve (41) and a rotating component (43), the sleeve (41) and the positioning hole (221) are coaxially mounted, the rotating component (43) includes a toggle member (431), a pin shaft (432) and a spring (433), the pin shaft (432) is arranged in the inner hole of the sleeve (41), the inner hole of the sleeve (41) is provided with a first stop surface (411), the pin shaft (432) is provided with a second stop surface (4321), and the spring (433) is sleeved on the pin shaft (432) and is located between the first stop surface (411) and the second stop surface (4321). 321), a toggle member (431) is fixed on one end of the pin shaft (432), and the other end is a protruding end (4322), and a bevel (43221) is processed on the protruding end (4322). When the toggle member (431) abuts against the locking point (4121) of the abutting end (412) of the sleeve (41) away from the base component (2), the protruding end (4322) of the pin shaft (432) extends into the adjustment hole (111) under the elastic force of the spring (433), locking the top column component (1) and the base component (2). At this time, the bevel (43221) is located at the lower part of the protruding end (4322), and the orthographic projection of the adjustment hole (111) on the bottom surface of the base (21) intersects with the orthographic projection of the bevel (43221) on the bottom surface of the base (21).

2. A lifting component and bracket assembly according to claim 1, characterized in that: A release point (4122) is also provided on the abutting end (412). When the toggle member (431) rotates to the release point (4122), the toggle member (431) pulls the pin shaft (432) so that the second stop surface (4321) overcomes the action of the spring (433) and leans against the first stop surface (411). The protruding end (4322) of the pin shaft (432) completely disengages from the adjustment hole (111), and the top column component (1) can move freely relative to the base component (2).

3. The combination device of a lifting component and a bracket according to claim 1, characterized in that: The top column component (1) comprises a support column (11), a plurality of adjustment holes (111) are arranged on the support column (11), the base component (2) comprises a support column sleeve (22), the positioning hole (221) is arranged on the support column sleeve (22), the support column (11) is inserted into the support column sleeve (22), the positioning hole (221) is aligned with one of the plurality of adjustment holes (111) and the support column (11) and the support column sleeve (22) are locked by a self-locking pin shaft component (4).

4. A lifting component and bracket assembly according to claim 3, characterized in that: The base component (2) includes a base (21), and the support column sleeve (22) is vertically fixed on the base (21). The base (21) is a large bottom plate structure, and a plurality of fixing blocks (211) are stamped on the base. The fixing blocks (211) fix the base (35) of the hydraulic lifting component (3) on the base (21).

5. The combination device of a lifting component and a bracket according to claim 1, characterized in that: The top column component (1) further comprises a connecting portion (13), wherein the connecting portion (13) is located on the side of the support column (11) and is fixedly connected to the piston rod (31) of the hydraulic lifting component (3) via a fastener.

6. A combination device of a lifting component and a bracket according to claim 1, characterized in that: The outer ring of the sleeve (41) is processed with an external thread (413), and the external thread (413) is screwed into the positioning hole (221) to achieve threaded connection, and a fastening nut (42) is fastened to the external thread (413) to fix the sleeve (41).

7. The combination device of a lifting component and a bracket according to claim 1, characterized in that: The toggle member (431) is a handle fixed on the outer circle of the pin shaft (432) or a pin shaft passing through one end of the pin shaft (432).

8. The combination device of a lifting component and a bracket according to claim 1, characterized in that: The first stop surface (411) is a stepped surface of a stepped hole (4111) extending from the inner hole of the sleeve (41) toward the center line and facing the spring (433); the second stop surface (4321) is a stepped surface of a boss (43211) extending from the pin shaft (432) toward the outside in the radial direction and facing the spring (433); one end of the spring (433) is pressed against the stepped surface of the stepped hole (4111), and the other end is pressed against the stepped surface of the boss (43211).

9. A lifting component and bracket assembly according to claim 1, characterized in that: The end surface of the abutting end (412) of the sleeve (41) is a curved surface (4120), and the curved surface (4120) passes through a locking point (4121) and a release point (4122), and a positioning pit (41221) for positioning the toggle member (431) is provided on the release point (4122).

10. A lifting component and bracket assembly according to claim 1, characterized in that: The top column component (1) is provided with a plurality of support columns (11), and a positioning hole (221) matching with the adjustment hole (111) of the previous support column (11) and a self-locking pin shaft component (4) for locking the two support columns (11) are provided on the next support column (11).

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