Anti-swing telescopic cylinder

Abstract

The utility model provides an anti-swing telescopic cylinder, relates to the technical field of telescopic cylinders, and aims to solve the technical problem that normal work is affected due to the fact that a telescopic cylinder in the prior art is prone to swing during extension. An anti-swing telescopic cylinder comprises a first cylinder body, a second cylinder body and a third cylinder body, each outer side wall of the first cylinder body is provided with a first protruding strip arranged in the vertical direction, each inner side wall of the second cylinder body is connected with a first rolling wheel, and the first rolling wheels abut against the first protruding strips; each outer side wall of the second barrel body is provided with a second convex strip arranged in the vertical direction, each inner side wall of the third barrel body is connected with a second rolling wheel, the second rolling wheel abuts against the second convex strip, and a gap between the first barrel body and the second barrel body is eliminated through the first convex strip and the first rolling wheel; and a gap between the second barrel body and the third barrel body is eliminated by a second convex strip and a second roller, so that when each barrel body extends out, the telescopic barrel is prevented from shaking due to the gap between the barrel bodies, and the normal work is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic cylinders, in particular to an anti-sway telescopic cylinder. Background Art

[0002] The telescopic cylinder includes several cylinders that are sequentially sleeved and slidably connected inside and outside. The inner cylinder can extend from the outer cylinder to increase the overall height of the telescopic cylinder. When the telescopic cylinder is used vertically, when several layers of cylinders are telescoping, the gaps between the layers of cylinders will cause the accumulated gaps to be too large when the cylinders are extended, causing the telescopic cylinder to shake. In situations where the telescopic cylinder needs to be anti-shake, the shaking caused by the accumulation of such gaps will affect the normal working performance of the telescopic cylinder. For example, in situations where precise positioning is required, severe shaking will affect the positioning accuracy of the telescopic cylinder, causing the telescopic cylinder to malfunction. In addition, in existing telescopic cylinders, only when one cylinder is fully extended can the next cylinder adjacent to it be extended, resulting in low working efficiency. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an anti-sway telescopic cylinder to solve the technical problem in the prior art that the telescopic cylinder is prone to shaking when extended, thereby affecting normal work.

[0004] In order to solve the above technical problems, the utility model provides an anti-sway telescopic cylinder, including a first cylinder body, a second cylinder body and a third cylinder body, the first cylinder body is slidably connected to the second cylinder body, and the second cylinder body is slidably connected to the third cylinder body, wherein each outer side wall of the first cylinder body is provided with a first convex strip arranged vertically, each inner side wall of the second cylinder body is connected with a first roller, the first roller corresponds to the first convex strip one-to-one, and the first roller and the first convex strip are abutted against each other, each outer side wall of the second cylinder body is provided with a second convex strip arranged vertically, each inner side wall of the third cylinder body is connected with a second roller, the second roller corresponds to the second convex strip one-to-one, and the second roller and the second convex strip are abutted against each other.

[0005] After adopting the above structure, the utility model has the following advantages: a first convex strip and a first roller are provided between the first cylinder body and the second cylinder body, and when relative sliding occurs between the first cylinder body and the second cylinder body, the first roller rolls along the first convex strip; a second convex strip and a second roller are provided between the second cylinder body and the third cylinder body, and when relative sliding occurs between the second cylinder body and the third cylinder body, the second roller rolls along the second convex strip; the first convex strip and the first roller eliminate the gap between the first cylinder body and the second cylinder body, and the second convex strip and the second roller eliminate the gap between the second cylinder body and the third cylinder body, and when each cylinder body is extended, the telescopic cylinder is prevented from shaking due to the gap between the cylinders and affecting normal operation. ; In addition, the first roller contacts the first ridge when rolling, and the second roller contacts the second ridge when rolling, preventing the first roller and the second roller from directly contacting the first cylinder and the second cylinder and causing wear of the first cylinder and the second cylinder. The setting of the first ridge and the second ridge directly shows the position on the first cylinder and the second cylinder that contacts the first roller and the second roller. During the production process of the first cylinder and the second cylinder, only the first ridge and the second ridge can be polished to reduce the friction between the first roller and the second roller, without polishing the entire first cylinder and the second cylinder, or only the first ridge and the second ridge are treated with anti-wear to improve the wear resistance, thereby reducing costs.

[0006] As an improvement, two first convex strips are provided on each outer side wall of the first cylinder, two first rollers are connected to each inner side wall of the second cylinder, two second convex strips are provided on each outer side wall of the second cylinder, and two second rollers are connected to each inner side wall of the third cylinder; this structure further improves the gap-eliminating effect of the first convex strips, the first rollers, the second convex strips and the second rollers, and further prevents shaking.

[0007] As an improvement, the first roller / second roller is connected to the second cylinder / third cylinder through a first connecting component. The first connecting component includes a connecting plate and two bracket plates. The two bracket plates are connected to the end face of the connecting plate close to the inside of the second cylinder / third cylinder. The first roller / second roller is rotatably connected between the two bracket plates. A first through hole is provided on each side wall of the second cylinder / third cylinder. The connecting plate is fixedly connected to the outer side wall of the second cylinder / third cylinder. The first roller / second roller passes through the first through hole and is located in the second cylinder / third cylinder. With this structure, the connecting plate can be installed from the outside so that the first roller / second roller is located in the second cylinder / third cylinder, which is convenient for installation.

[0008] As an improvement, the utility model also includes a first steel wire rope and a second steel wire rope, and the second cylinder is connected to a first pulley and a second pulley, one end of the first steel wire rope is connected to the first cylinder, and the other end of the first steel wire rope is upwardly wound around the first pulley and then connected to the third cylinder, one end of the second steel wire rope is connected to the first cylinder, and the other end of the second steel wire rope is downwardly wound around the second pulley and then connected to the third cylinder; with this structure, when the first cylinder moves upward relative to the second cylinder, the second cylinder moves upward synchronously due to the setting of the second steel wire rope and the second pulley, and when the first cylinder moves downward relative to the second cylinder, the second cylinder moves downward synchronously due to the setting of the first steel wire rope and the first pulley, thereby improving work efficiency.

[0009] As an improvement, the first pulley is connected to the upper part of the second cylinder, the second pulley is connected to the lower part of the second cylinder, one end of the first steel wire rope is connected to the top of the first cylinder, the other end of the first steel wire rope is connected to the bottom of the third cylinder, one end of the second steel wire rope is connected to the top of the first cylinder, and the other end of the second steel wire rope is connected to the bottom of the third cylinder.

[0010] As an improvement, the first pulley and the second pulley are both on the left and right, and the first steel rope and the second steel rope are both on the left and right; adopting this structure, the stability of the linkage between the first cylinder and the second cylinder is improved.

[0011] As an improvement, both ends of the first steel wire rope and the second steel wire rope are provided with a threaded portion, the first cylinder / the third cylinder is connected to a support plate, the support plate is provided with a second through hole arranged vertically, the threaded portion is threadedly connected to the first nut and the second nut, the threaded portion passes through the second through hole, and the first nut and the second nut are respectively abutted against the upper and lower end surfaces of the support plate; this structure makes the connection between the first steel wire rope / the second steel wire rope and the support plate more stable, preventing the end of the first steel wire rope / the second steel wire rope from moving and affecting the synchronous movement of the first cylinder and the second cylinder.

[0012] As an improvement, the first pulley / second pulley is connected to the second cylinder through a second connecting assembly, and a third through hole is provided on the side wall of the second cylinder. The second connecting assembly includes a connecting shaft and four side plates, two of which are distributed front and back to connect the outer side wall of the second cylinder, and the other two side plates are distributed front and back to connect the inner side wall of the second cylinder. The inner and outer side plates correspond to each other one by one, and grooves are provided on the facing end faces of the inner and outer side plates on each side. One end of the connecting shaft is fixedly connected to the two grooves of the inner and outer side plates on one side, and the other end of the connecting shaft is fixedly connected to the two grooves of the inner and outer side plates on the other side. The first pulley / second pulley is located in the third through hole and is rotatably connected to the connecting shaft. This structure is convenient for installing the first pulley and the second pulley, and the setting of the third through hole also facilitates the passage of the first steel wire rope and the second steel wire rope.

[0013] As an improvement, a first stop is connected to the bottom end of the second cylinder, a first limit block is connected to the outer wall of the first cylinder, and the first stop is located on the moving path of the first limit block; a second stop is connected to the bottom end of the third cylinder, a second limit block is connected to the outer wall of the second cylinder, and the second stop is located on the moving path of the second limit block; using this structure, the extension height of the telescopic cylinder is controlled by the first stop, the first limit block, the second stop and the second limit block.

[0014] As an improvement, there are two first blocks, two second blocks, two first limit blocks and two second limit blocks; with this structure, the control of the extension height of the telescopic cylinder is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model from another angle.

[0017] Figure 3 This is a schematic diagram of the exploded structure of the second cylinder part in the present utility model.

[0018] Figure 4 This is a schematic structural diagram of the second connecting component in the present invention.

[0019] Figure 5 This is a schematic diagram of the connection structure of the first steel wire rope, the second steel wire rope and the support plate in the present invention.

[0020] Figure 6 This is a schematic diagram of the winding of the first steel wire rope and the second steel wire rope in the present invention.

[0021] Figure markings: 1. first cylinder; 2. second cylinder; 3. third cylinder; 4. first ridge; 5. first roller; 6. second ridge; 7. second roller; 8. first connecting assembly; 81. connecting plate; 82. bracket plate; 9. first through hole; 10. first steel wire rope; 11. second steel wire rope; 12. first pulley; 13. second pulley; 14. threaded portion; 15. support plate; 16. second through hole; 17. first nut; 18. second nut; 19. second connecting assembly; 191. connecting shaft; 192. side plate; 20. groove; 21. third through hole; 22. first stop; 23. first limit block; 24. second stop; 25. second limit block. DETAILED DESCRIPTION

[0022] The anti-sway telescopic cylinder of the utility model is described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 6As shown, an anti-sway telescopic cylinder includes a first cylinder 1, a second cylinder 2 and a third cylinder 3. The first cylinder 1 is slidably connected to the second cylinder 2, and the second cylinder 2 is slidably connected to the third cylinder 3. The cross-sections of the first cylinder 1, the second cylinder 2 and the third cylinder 3 are all rectangular, so they all have four outer walls and four inner walls, wherein each outer wall of the first cylinder 1 is provided with a first ridge 4 arranged vertically, and each inner wall of the second cylinder 2 is connected to a first roller 5, the first roller 5 corresponds to the first ridge 4 one by one, and the first roller 5 is connected to the first ridge 4. The second ridges 4 are offset against each other, each outer side wall of the second cylinder 2 is provided with a second ridge 6 arranged vertically, and each inner side wall of the third cylinder 3 is connected to a second roller 7, the second roller 7 corresponds to the second ridge 6 one-to-one, and the second roller 7 and the second ridge 6 are offset against each other; further, two first ridges 4 are provided on each outer side wall of the first cylinder 1, two first rollers 5 are connected to each inner side wall of the second cylinder 2, two second ridges 6 are provided on each outer side wall of the second cylinder 2, and two second rollers 7 are connected to each inner side wall of the third cylinder 3. In addition, the number of the first rollers 5 on the second cylinder 2 and the second rollers 7 on the third cylinder 3 can be increased according to actual needs. For example, in this embodiment, four second rollers 7 are connected to each inner side wall of the third cylinder 3.

[0024] like Figure 3 As shown, the first roller 5 / the second roller 7 is connected to the second cylinder 2 / the third cylinder 3 through a first connecting component 8. The connection structure between the first roller 5 and the second cylinder 2 is used as an example in the figure. The first connecting component 8 includes a connecting plate 81 and two bracket plates 82. Two bracket plates 82 are connected to the end surface of the connecting plate 81 close to the interior of the second cylinder 2 / the third cylinder 3. The first roller 5 / the second roller 7 is rotatably connected between the two bracket plates 82. A first through hole 9 is provided on each side wall of the second cylinder 2 / the third cylinder 3. The connecting plate 81 is fixedly connected to the outer wall of the second cylinder 2 / the third cylinder 3. The first roller 5 / the second roller 7 passes through the first through hole 9 and is located in the second cylinder 2 / the third cylinder 3.

[0025] like Figure 2As shown, the bottom end of the second cylinder 2 is connected to a first stop block 22, and the outer side wall of the first cylinder 1 is connected to a first limit block 23, and the first stop block 22 is located on the moving path of the first limit block 23, and the bottom end of the third cylinder 3 is connected to a second stop block 24, and the outer side wall of the second cylinder 2 is connected to a second limit block 25, and the second stop block 24 is located on the moving path of the second limit block 25; there are two first stop blocks 22, second stop blocks 24, first limit blocks 23 and second limit blocks 25. In this embodiment, the first stop blocks 22 are arranged on the front and rear sides of the bottom end of the second cylinder 2, the second stop blocks 24 are arranged on the front and rear sides of the bottom end of the third cylinder 3, the first limit blocks 23 are arranged on the front and rear outer sides of the first cylinder 1, and the second limit blocks 25 are arranged on the front and rear outer sides of the second cylinder 2.

[0026] In addition, the present invention further comprises a first steel wire rope 10 and a second steel wire rope 11, such as Figure 6 As shown, a first pulley 12 and a second pulley 13 are connected to the second cylinder 2, one end of the first steel wire rope 10 is connected to the first cylinder 1, and the other end of the first steel wire rope 10 is upwardly wrapped around the first pulley 12 and then connected to the third cylinder 3, one end of the second steel wire rope 11 is connected to the first cylinder 1, and the other end of the second steel wire rope 11 is downwardly wrapped around the second pulley 13 and then connected to the third cylinder 3; specifically, the first pulley 12 is connected to the upper part of the second cylinder 2, and the second pulley 13 is connected to the lower part of the second cylinder 2, one end of the first steel wire rope 10 is connected to the top of the first cylinder 1, and the other end of the first wire rope 11 is connected to the top of the first cylinder 1, and the other end of the second wire rope 11 is connected to the bottom of the third cylinder 3, wherein the other end of the first wire rope 10 is first upwardly wrapped around the first pulley 12 and then downwardly connected to the third cylinder 3, and the other end of the second wire rope 11 is first downwardly wrapped around the second pulley 13 and then upwardly connected to the third cylinder 3. In this embodiment, there are two first pulleys 12 and two second pulleys 13 on the left and right sides, and there are also two first steel ropes 10 and two second steel ropes 11 on the left and right sides.

[0027] like Figure 5As shown, both ends of the first steel wire rope 10 and the second steel wire rope 11 are provided with a threaded portion 14, and a support plate 15 is connected to the first cylinder 1 / the third cylinder 3. The support plate 15 is a rectangular frame structure, wherein the support plate 15 on the first cylinder 1 is connected to the top end of the first cylinder 1, and the support plate 15 on the third cylinder 3 is connected to the bottom end of the third cylinder 3. A second through hole 16 arranged vertically is provided on the support plate 15, and a first nut 17 and a second nut 18 are threadedly connected to the threaded portion 14, and the threaded portion 14 passes through the second through hole 16, and the first nut 17 and the second nut 18 are respectively against the upper and lower end surfaces of the support plate 15. In addition, in order to improve the stability of the connection between the threaded portion 14 and the support plate 15, the first steel wire rope 10 has one first nut 17 on the threaded portion 14 and two second nuts 18, and a gasket is also provided between the second nut 18 and the support plate 15. Similarly, the second steel wire rope 11 has two first nuts 17 on the threaded portion 14 and one second nut 18, and a gasket is also provided between the first nut 17 and the support plate 15.

[0028] like Figure 3 and Figure 4 As shown, the first pulley 12 / the second pulley 13 is connected to the second cylinder 2 through the second connecting assembly 19. The connection structure of the second pulley 13 and the second cylinder 2 is illustrated as an example. A third through hole 21 is provided on the side wall of the second cylinder 2. The second connecting assembly 19 includes a connecting shaft 191 and four side plates 192, two of which are distributed front and back to connect the outer side wall of the second cylinder 2, and the other two side plates 192 are distributed front and back to connect the inner side wall of the second cylinder 2. The inner and outer side plates 192 correspond to each other. Grooves 20 are provided on the facing end surfaces of the inner and outer side plates 192. One end of the connecting shaft 191 is fixedly connected to the two grooves 20 of the inner and outer side plates 192 on one side, and the other end of the connecting shaft 191 is fixedly connected to the two grooves 20 of the inner and outer side plates 192 on the other side. The first pulley 12 / second pulley 13 is located in the third through hole 21 and is rotatably connected to the connecting shaft 191, and a portion of the first pulley 12 / second pulley 13 is located in the second cylinder 2, and the other portion is exposed outside the second cylinder 2.

[0029] A first ridge 4 and a first roller 5 are provided between the first cylinder 1 and the second cylinder 2. When relative sliding occurs between the first cylinder 1 and the second cylinder 2, the first roller 5 rolls along the first ridge 4. A second ridge 6 and a second roller 7 are provided between the second cylinder 2 and the third cylinder 3. When relative sliding occurs between the second cylinder 2 and the third cylinder 3, the second roller 7 rolls along the second ridge 6. The first ridge 4 and the first roller 5 eliminate the gap between the first cylinder 1 and the second cylinder 2, and the second ridge 6 and the second roller 7 eliminate the gap between the second cylinder 2 and the third cylinder 3. When each cylinder is extended, the telescopic cylinder is prevented from shaking due to the gap between the cylinders, thereby affecting normal operation. In addition, when the first roller 5 rolls, it is in contact with the first The ridges 4 are in contact with the first cylinder 1 and the second cylinder 2, and the second roller 7 is in contact with the second ridges 6 when rolling, so as to prevent the first roller 5 and the second roller 7 from directly contacting the first cylinder 1 and the second cylinder 2 and causing wear of the first cylinder 1 and the second cylinder 2. The setting of the first ridges 4 and the second ridges 6 directly shows the positions on the first cylinder 1 and the second cylinder 2 that contact the first roller 5 and the second roller 7. During the production process of the first cylinder 1 and the second cylinder 2, only the first ridges 4 and the second ridges 6 can be polished to reduce the friction between the first roller 5 and the second roller 7, without polishing the entire first cylinder 1 and the second cylinder 2, or only the first ridges 4 and the second ridges 6 can be treated with anti-wear to improve the wear resistance, thereby reducing costs.

[0030] The above describes the implementation mode of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned implementation mode. All other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. An anti-sway telescopic cylinder, comprising a first cylinder (1), a second cylinder (2) and a third cylinder (3), wherein the first cylinder (1) is slidably connected in the second cylinder (2), and the second cylinder (2) is slidably connected in the third cylinder (3), characterized in that: Each outer side wall of the first cylinder (1) is provided with a first convex strip (4) arranged vertically; each inner side wall of the second cylinder (2) is connected with a first roller (5); the first roller (5) corresponds to the first convex strip (4) one by one, and the first roller (5) abuts against the first convex strip (4); each outer side wall of the second cylinder (2) is provided with a second convex strip (6) arranged vertically; each inner side wall of the third cylinder (3) is connected with a second roller (7); the second roller (7) corresponds to the second convex strip (6) one by one, and the second roller (7) abuts against the second convex strip (6).

2. The anti-sway telescopic cylinder according to claim 1, characterized in that: Two first convex strips (4) are provided on each outer side wall of the first cylinder (1), two first rollers (5) are connected to each inner side wall of the second cylinder (2), two second convex strips (6) are provided on each outer side wall of the second cylinder (2), and two second rollers (7) are connected to each inner side wall of the third cylinder (3).

3. The anti-sway telescopic cylinder according to claim 1, characterized in that: The first roller (5) / the second roller (7) is connected to the second cylinder (2) / the third cylinder (3) via a first connecting assembly (8). The first connecting assembly (8) comprises a connecting plate (81) and two bracket plates (82). The two bracket plates (82) are connected to the end surface of the connecting plate (81) close to the inside of the second cylinder (2) / the third cylinder (3). The first roller (5) / the second roller (7) is rotatably connected between the two bracket plates (82). A first through hole (9) is provided on each side wall of the second cylinder (2) / the third cylinder (3). The connecting plate (81) is fixedly connected to the outer side wall of the second cylinder (2) / the third cylinder (3). The first roller (5) / the second roller (7) passes through the first through hole (9) and is located inside the second cylinder (2) / the third cylinder (3).

4. The anti-sway telescopic cylinder according to claim 1, characterized in that: The invention also comprises a first steel wire rope (10) and a second steel wire rope (11); a first pulley (12) and a second pulley (13) are connected to the second cylinder (2); one end of the first steel wire rope (10) is connected to the first cylinder (1); the other end of the first steel wire rope (10) is wound around the first pulley (12) upwards and then connected to the third cylinder (3); one end of the second steel wire rope (11) is connected to the first cylinder (1); the other end of the second steel wire rope (11) is wound around the second pulley (13) downwards and then connected to the third cylinder (3).

5. The anti-sway telescopic cylinder according to claim 4, characterized in that: The first pulley (12) is connected to the upper part of the second cylinder (2), the second pulley (13) is connected to the lower part of the second cylinder (2), one end of the first steel wire rope (10) is connected to the top end of the first cylinder (1), the other end of the first steel wire rope (10) is connected to the bottom end of the third cylinder (3), one end of the second steel wire rope (11) is connected to the top end of the first cylinder (1), and the other end of the second steel wire rope (11) is connected to the bottom end of the third cylinder (3).

6. The anti-sway telescopic cylinder according to claim 4, characterized in that: The first pulley (12) and the second pulley (13) are both two on the left and right, and the first steel wire rope (10) and the second steel wire rope (11) are both two on the left and right.

7. The anti-sway telescopic cylinder according to claim 4, characterized in that: Both ends of the first steel wire rope (10) and the second steel wire rope (11) are provided with a threaded portion (14); the first cylinder (1) / the third cylinder (3) is connected to a support plate (15); the support plate (15) is provided with a second through hole (16) arranged vertically; the threaded portion (14) is threadedly connected with a first nut (17) and a second nut (18); the threaded portion (14) passes through the second through hole (16), and the first nut (17) and the second nut (18) are respectively abutted against the upper and lower end surfaces of the support plate (15).

8. The anti-sway telescopic cylinder according to claim 4, characterized in that: The first pulley (12) / the second pulley (13) is connected to the second cylinder (2) via a second connecting assembly (19); a third through hole (21) is provided on the side wall of the second cylinder (2); the second connecting assembly (19) comprises a connecting shaft (191) and four side plates (192); two of the side plates (192) are connected to the outer side wall of the second cylinder (2) in a front-to-back distributed manner; the other two side plates (192) are connected to the inner side wall of the second cylinder (2) in a front-to-back distributed manner; the inner and outer side plates (192) are connected to the outer side wall of the second cylinder (2) in a front-to-back distributed manner; Correspondingly, grooves (20) are provided on the facing end surfaces of the inner and outer side plates (192) on each side, one end of the connecting shaft (191) is fixedly connected to the two grooves (20) of the inner and outer side plates (192) on one side, and the other end of the connecting shaft (191) is fixedly connected to the two grooves (20) of the inner and outer side plates (192) on the other side, and the first pulley (12) / the second pulley (13) is located in the third through hole (21) and is rotatably connected to the connecting shaft (191).

9. The anti-sway telescopic cylinder according to claim 1, characterized in that: The bottom end of the second cylinder (2) is connected to a first stop block (22); the outer wall of the first cylinder (1) is connected to a first limit block (23); the first stop block (22) is located on a moving path of the first limit block (23); the bottom end of the third cylinder (3) is connected to a second stop block (24); the outer wall of the second cylinder (2) is connected to a second limit block (25); the second stop block (24) is located on a moving path of the second limit block (25).

10. The anti-sway telescopic cylinder according to claim 9, characterized in that: There are two of each of the first stop block (22), the second stop block (24), the first limit block (23) and the second limit block (25).

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