Two-stage telescopic anti-rotation oil cylinder

Abstract

The utility model provides a secondary telescopic anti-rotation oil cylinder, which relates to the technical field of emergency lighting and comprises a telescopic oil cylinder main body, a connecting seat is fixed at the bottom end of the telescopic oil cylinder main body, a first oil inlet hole is arranged on the outer wall of the connecting seat, and a first piston rod is slidably connected in the telescopic oil cylinder main body. A second piston rod is slidably connected to the top end of the first piston rod, a communicating hole is formed in the outer wall of the first piston rod, a sleeve column is fixed to the position, located on the outer side of the second piston rod, of the top end of the first piston rod, and a second oil inlet hole matched with the communicating hole is formed in the outer wall of the sleeve column. Through the arrangement of a limiting rod, a sleeve rod and a sliding groove, when a second piston rod ascends and descends, the limiting rod fixed in the second piston rod can be driven to ascend and descend through ascending and descending, and when the limiting rod ascends and descends along with the second piston rod, due to limiting of square edges and corners of the limiting rod, the sleeve rod cannot rotate; therefore, the second piston rod fixed outside does not rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency lighting, in particular to a two-stage telescopic anti-rotation oil cylinder. Background Art

[0002] With modern society placing a high emphasis on safety, emergency lighting has become crucial in various locations, such as factories, shopping malls, schools, hospitals, and tunnels. In emergencies, reliable emergency lighting systems can provide necessary light, guide evacuation, and ensure life safety. Traditional emergency lighting equipment often has limitations in height adjustment. The introduction of a two-stage telescopic cylinder allows for flexible height adjustment of emergency lighting.

[0003] In the current prior art, a two-stage telescopic anti-rotation oil cylinder has a second piston rod inside that rotates when it is rising, causing the wires on the top lamp to become entangled. The same is true during the descent process, affecting its use. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that during operation, the second piston rod inside the cylinder rotates when ascending, causing the wires on the top lamp to become entangled, and the same is true during the descent process, affecting the use, and a two-stage telescopic anti-rotation oil cylinder is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a two-stage telescopic anti-rotation oil cylinder, comprising a telescopic oil cylinder main body, a connecting seat fixed at the bottom end of the telescopic oil cylinder main body, a first oil inlet hole provided on the outer wall of the connecting seat, a first piston rod slidably connected in the telescopic oil cylinder main body, a second piston rod slidably connected to the top end of the first piston rod, a connecting hole provided on the outer wall of the first piston rod, a sleeve column fixed at the top end of the first piston rod on the outside of the second piston rod, a second oil inlet hole matching the connecting hole provided on the outer wall of the sleeve column, a limiting rod fixed on the inner bottom wall of the telescopic oil cylinder main body, the limiting rod passing through the first piston rod and arranged in the second piston rod, a sleeve rod matching the limiting rod fixed on the inner wall of the second piston rod.

[0006] Preferably, the first oil inlet hole is connected to the telescopic cylinder body, and the connection point between the first oil inlet hole and the telescopic cylinder body is located below the first piston rod.

[0007] Preferably, the second piston rod is slidably connected in the sleeve column, and the bottom end seal of the sleeve column is smaller than the bottom end piston of the first piston rod.

[0008] Preferably, the top seal of the first piston rod is smaller than the bottom seal of the second piston rod.

[0009] Preferably, the top end of the first piston rod is threadedly connected to a connecting sleeve, the top end of the connecting sleeve is threadedly connected to a mounting plate, and a plurality of second mounting holes are formed in the mounting plate.

[0010] Preferably, a plurality of first mounting holes are provided in the connecting seat, and a sliding groove matching the limiting rod is provided on the inner wall of the sleeve rod.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] In the present invention, through the arrangement of the limit rod, the sleeve rod and the slide groove, when the second piston rod is raised or lowered, its lifting and lowering will drive the limit rod fixed inside it to be raised or lowered, and when the limit rod follows the second piston rod to be raised or lowered, due to the limitation of the square edges of the limit rod, the sleeve rod will not rotate, thereby preventing the second piston rod fixed outside from rotating, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of a two-stage telescopic anti-rotation oil cylinder is proposed for the utility model;

[0014] Figure 2 This is a bottom-up stereoscopic diagram of a two-stage telescopic anti-rotation oil cylinder proposed in the utility model;

[0015] Figure 3 A side perspective view of a two-stage telescopic anti-rotation oil cylinder is provided for the utility model;

[0016] Figure 4 The utility model provides a cross-sectional view of a two-stage telescopic anti-rotation oil cylinder.

[0017] Legend: 1. Telescopic cylinder body; 2. Connecting seat; 3. First mounting hole; 4. First oil inlet hole; 5. First piston rod; 6. Second piston rod; 7. Connecting hole; 8. Sleeve column; 9. Second oil inlet hole; 10. Connecting sleeve; 11. Mounting plate; 12. Second mounting hole; 13. Limit rod; 14. Sleeve rod; 15. Slide groove. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, as Figure 1-4 As shown, the utility model provides a two-stage telescopic anti-rotation oil cylinder, including a telescopic oil cylinder main body 1, a connecting seat 2 is fixed to the bottom end of the telescopic oil cylinder main body 1, a first oil inlet hole 4 is opened on the outer wall of the connecting seat 2, a first piston rod 5 is slidably connected in the telescopic oil cylinder main body 1, and the top end of the first piston rod 5 is slidably connected to the second piston rod 6, a connecting hole 7 is opened on the outer wall of the first piston rod 5, the top end of the first piston rod 5 is located on the outside of the second piston rod 6 and is fixed with a sleeve column 8, and a second oil inlet hole 9 matching the connecting hole 7 is opened on the outer wall of the sleeve column 8, a limiting rod 13 is fixed on the inner bottom wall of the telescopic oil cylinder main body 1, the limiting rod 13 passes through the first piston rod 5 and is arranged in the second piston rod 6, and a sleeve rod 14 matching the limiting rod 13 is fixed on the inner wall of the second piston rod 6.

[0021] The effect achieved by the entire embodiment 1 is that oil is introduced through the first oil inlet hole 4, and when the oil enters the telescopic cylinder body 1 through the first oil inlet hole 4, it will push the first piston rod 5 to rise, and when the first piston rod 5 rises to the top and is blocked by the sleeve column 8, the connecting hole 7 opened on its outside will be connected with the second oil inlet hole 9 opened on the outer wall of the sleeve column 8. At this time, oil is injected through the second oil inlet hole 9, and the oil will enter the first piston rod 5, pushing the second piston rod 6 to rise. When the second piston rod 6 rises, through the setting of the limit rod 13 and the sleeve rod 14, when the second piston rod 6 is lifted, it will drive the limit rod 13 fixed inside it to lift and lower, and when the limit rod 13 follows the second piston rod 6 to rise and lower, due to the limitation of the square edges of the limit rod 13, the sleeve rod 14 will not rotate, so that the second piston rod 6 fixed outside will not rotate, which is more practical.

[0022] Example 2, as Figure 1-4 As shown, the first oil inlet hole 4 is connected to the telescopic cylinder body 1, and the connection between the first oil inlet hole 4 and the telescopic cylinder body 1 is below the first piston rod 5. The second piston rod 6 is slidably connected in the sleeve column 8. The bottom end seal of the sleeve column 8 is smaller than the bottom end piston of the first piston rod 5, and the top end seal of the first piston rod 5 is smaller than the bottom end piston of the second piston rod 6. The top end of the first piston rod 5 is threadedly connected to a connecting sleeve 10, and the top end of the connecting sleeve 10 is threadedly connected to a mounting plate 11. A plurality of second mounting holes 12 are provided in the mounting plate 11, and a plurality of first mounting holes 3 are provided in the connecting seat 2. A sliding groove 15 matching the limit rod 13 is provided on the inner wall of the sleeve rod 14.

[0023] The effect achieved by the entire embodiment 2 is that, through the setting of the connecting seat 2 and the first mounting hole 3, it can be docked and installed in any position, and the setting of the mounting plate 11 and the second mounting hole 12 can be used to install a lighting lamp. The top end of the first piston rod 5 is threadedly connected to the connecting sleeve 10 and the top end of the connecting sleeve 10 is threadedly connected to the mounting plate 11, so that the connecting sleeve 10 and the mounting plate 11 can be disassembled separately, which is convenient for replacement and maintenance and more practical.

[0024] Working principle: When the device is in use, oil is introduced through the first oil inlet hole 4, and when the oil enters the telescopic cylinder body 1 through the first oil inlet hole 4, it will push the first piston rod 5 to rise, and when the first piston rod 5 rises to the top and is blocked by the sleeve column 8, the connecting hole 7 opened on its outside will be connected with the second oil inlet hole 9 opened on the outer wall of the sleeve column 8. At this time, oil is injected through the second oil inlet hole 9, and the oil will enter the first piston rod 5, pushing the second piston rod 6 to rise. When the second piston rod 6 rises, through the setting of the limit rod 13 and the sleeve rod 14, when the second piston rod 6 is lifted, it will drive the limit rod 13 fixed inside it to lift and lower, and when the limit rod 13 follows the second piston rod 6 to rise and lower, due to the limitation of the square edges of the limit rod 13, the sleeve rod 14 will not rotate, so that the second piston rod 6 fixed outside will not rotate, and when the second piston rod 6 is put on the shelf, it will drive the lighting lamp provided on its top to rise.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A two-stage telescopic anti-rotation oil cylinder, comprising a telescopic oil cylinder body (1), characterized in that: A connecting seat (2) is fixed to the bottom end of the telescopic oil cylinder body (1), and a first oil inlet hole (4) is provided on the outer wall of the connecting seat (2). A first piston rod (5) is slidably connected to the inside of the telescopic oil cylinder body (1), and a second piston rod (6) is slidably connected to the top end of the first piston rod (5). A connecting hole (7) is provided on the outer wall of the first piston rod (5). A sleeve column (8) is fixed to the top end of the first piston rod (5) on the outside of the second piston rod (6), and a second oil inlet hole (9) matching the connecting hole (7) is provided on the outer wall of the sleeve column (8). A limiting rod (13) is fixed to the inner bottom wall of the telescopic oil cylinder body (1), and the limiting rod (13) passes through the first piston rod (5) and is provided in the second piston rod (6). A sleeve rod (14) matching the limiting rod (13) is fixed to the inner wall of the second piston rod (6).

2. The two-stage telescopic anti-rotation oil cylinder according to claim 1, characterized in that: The first oil inlet hole (4) is connected to the telescopic oil cylinder body (1), and the connection point between the first oil inlet hole (4) and the telescopic oil cylinder body (1) is located below the first piston rod (5).

3. The two-stage telescopic anti-rotation cylinder according to claim 1, characterized in that: The second piston rod (6) is slidably connected in the sleeve column (8), and the bottom end seal of the sleeve column (8) is smaller than the bottom end piston of the first piston rod (5).

4. The two-stage telescopic anti-rotation cylinder according to claim 1, characterized in that: The top seal of the first piston rod (5) is smaller than the bottom seal of the second piston rod (6).

5. The two-stage telescopic anti-rotation cylinder according to claim 1, characterized in that: The top end of the first piston rod (5) is threadedly connected to a connecting sleeve (10), the top end of the connecting sleeve (10) is threadedly connected to a mounting plate (11), and a plurality of second mounting holes (12) are provided in the mounting plate (11).

6. The two-stage telescopic anti-rotation cylinder according to claim 1, characterized in that: A plurality of first mounting holes (3) are provided in the connecting seat (2), and a sliding groove (15) matching the limiting rod (13) is provided on the inner wall of the sleeve rod (14).

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