Air pressure rod with buffer structure

Abstract

The utility model discloses a pneumatic rod with a buffer structure, which comprises a main sleeve, an inner sleeve with a deformation joint is fixedly connected inside the main sleeve, the top of the inner sleeve is connected with an ejector rod with a valve needle, the inner wall of the inner sleeve is connected with a piston rod, and the bottom of the inner wall of the main sleeve is fixedly connected with a buffer cylinder. A shock absorber is fixedly installed at the bottom of the inner wall of the buffering cylinder, a pressure buffering frame is fixedly connected to the top of the shock absorber, a lower air cylinder is fixedly connected to the top of the pressure buffering frame, and the surface of the inner wall of the lower air cylinder is slidably connected with the bottom of a piston rod. Through the matching of the structures, the outer sleeve is arranged outside the main sleeve, so that the resistance to external pressure of the main sleeve can be enhanced, the sealing performance of the piston rod of the air pressure rod is enhanced, the buffering and supporting effect is achieved under the emergency air leakage condition, and an alarm is given for reminding; and the buffering and damping effects of the air pressure rod under emergency conditions are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pressure rods, in particular to a gas pressure rod with a buffer structure. Background Art

[0002] The pneumatic rod comprises a vertically extending hollow tubular outer cylinder, a hollow tubular inner cylinder coaxially fixed in the outer cylinder and defining an air chamber inside, a piston airtightly installed in the inner cylinder and movable up and down, a piston rod extending downward from the piston out of the outer cylinder, and a control device airtightly installed in the upper end of the inner cylinder;

[0003] For example, an elastic buffer gas pressure rod with patent application number CN202320317291.1 belongs to the field of gas pressure rod technology. The gas pressure rod includes: an outer sleeve; a support member and a mounting seat placed in the outer sleeve, one end of the mounting seat extends into the support member; a spring is arranged between the support member and the spring base; an inner sleeve nested in the outer sleeve, one end of the inner sleeve is placed in the mounting seat, and a guide sleeve is arranged between the outer sleeve and the inner sleeve; the guide sleeve is provided with at least one positioning groove along the circumferential direction, and a guide plate is formed on the body of the guide sleeve;

[0004] Since the above-mentioned elastic buffer gas pressure rod is buffered by the spring at the internal support, the upper half of the gas pressure rod is the ventilation space, so that its upper part has a supporting effect, but the piston cannot play a good force unloading and buffering effect. Since the gas pressure rod is mostly installed at the bottom of the seat, sudden situations such as air leakage may cause impact damage to the lower part, which brings certain adverse effects on actual use and therefore needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a gas pressure rod with a buffer structure, which has the advantages of enhancing its resistance to external pressure by arranging an outer sleeve on the outside of the main sleeve, enhancing the sealing performance at the piston rod of the gas pressure rod, and providing a buffering support effect and an alarm reminder in the event of an emergency air leakage, thereby ensuring the buffering and shock-absorbing advantages of the gas pressure rod in emergency situations, bringing certain favorable effects to actual use, and solving the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas pressure rod with a buffer structure, comprising a main sleeve, the interior of the main sleeve is fixedly connected to an inner sleeve with a deformation seam, the top of the inner sleeve is connected to a push rod with a valve needle, the inner wall of the inner sleeve is connected to a piston rod, the bottom of the inner wall of the main sleeve is fixedly connected to a buffer cylinder, the bottom of the inner wall of the buffer cylinder is fixedly installed with a shock absorber, the top of the shock absorber is fixedly connected to a pressure-absorbing frame, the top of the pressure-absorbing frame is fixedly connected to a lower air cylinder, and the surface of the inner wall of the lower air cylinder is slidably connected to the bottom of the piston rod.

[0007] Preferably, the outside of the main sleeve is fixedly connected to the outer sleeve, the top of the outer sleeve is fixedly connected to the tough steel rope, the side of the main sleeve is fixedly connected to the bolt ring, and the side of the bolt ring is connected to one end of the tough steel rope.

[0008] Preferably, a pressure relief sleeve is fixedly connected to the bottom of the inner wall of the inner sleeve, and the surface of the inner wall of the pressure relief sleeve is sealingly connected to the surface of the piston rod.

[0009] Preferably, a collision sensor is fixedly connected to the lower surface of the inner wall of the buffer tube, and the collision sensor is located directly below the pressure buffer frame, and the collision sensor and the pressure buffer frame are not in contact.

[0010] Preferably, the top and bottom of the pressure relief frame are both sealing plates, and a shock-absorbing spring with a damping pad is fixedly connected between the surfaces of the two sealing plates.

[0011] Preferably, a secondary protective cylinder is fixedly connected to the top of the buffer cylinder, a sealing ring is fixedly connected to the top of the secondary protective cylinder, a surface of the sealing ring is slidably connected to a surface of a piston rod, and the piston rod is located inside the secondary protective cylinder.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the main sleeve and the outer sleeve are connected to protect the outside of the main sleeve, so as to prevent the external pressure from causing extrusion damage to the wall of the main sleeve, and a tough steel rope is added to prevent the gas pressure rod from accidentally falling off during long-term use, thereby achieving a certain anti-falling and anti-falling effect;

[0014] The utility model discloses that the piston rod is arranged to be raised and lowered under the control of the valve needle of the push rod, and the bottom of the piston rod will extend into the interior of the lower air cylinder, and there are secondary protection tube and pressure-relief sleeve at the lower air cylinder, so as to enhance the sealing effect at the upper and lower parts of the piston rod. If there is gas leakage in the air pressure rod, the air below the piston rod and the air above the piston rod will be unbalanced, causing the piston rod to be squeezed downward to the bottom of the lower air cylinder, causing the squeezing and contraction of the shock-absorbing spring in the pressure-relief frame, thus playing an anti-squeezing and buffering effect at the upper part. At the same time, the squeezing force received by the pressure-relief frame will continue to be transmitted downward, and under the action of the shock absorber, a secondary buffering and unloading force will be performed to enhance the resistance. The collision sensor touching the sealing plate in the pressure-relief frame can be hit and send out an alarm, indicating that the air pressure rod is in a dangerous state, thereby ensuring the buffering and shock-reducing effect of the air pressure rod in an emergency situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2This is a schematic diagram of the internal structure of the main sleeve in the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the lower air cylinder in the utility model;

[0018] Figure 4 It is an enlarged view of point A of the present utility model.

[0019] In the figure: 1. main sleeve; 2. inner sleeve; 3. push rod; 4. piston rod; 5. buffer cylinder; 6. shock absorber; 7. pressure relief frame; 8. lower air cylinder; 9. outer sleeve; 10. tough steel rope; 11. bolt ring; 12. pressure relief sleeve; 13. collision sensor; 14. sealing plate; 15. shock absorbing spring; 16. secondary protection cylinder; 17. sealing ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1, please refer to Figures 1 to 4 The utility model provides a technical solution: a gas pressure rod with a buffer structure, comprising a main sleeve 1, the interior of the main sleeve 1 is fixedly connected to an inner sleeve 2 with a deformation seam, the top of the inner sleeve 2 is connected to a push rod 3 with a valve needle, the inner wall of the inner sleeve 2 is connected to a piston rod 4, the bottom of the inner wall of the main sleeve 1 is fixedly connected to a buffer cylinder 5, the bottom of the inner wall of the buffer cylinder 5 is fixedly installed with a shock absorber 6, the top of the shock absorber 6 is fixedly connected to a pressure relief frame 7, the top of the pressure relief frame 7 is fixedly connected to a lower air cylinder 8, and the surface of the inner wall of the lower air cylinder 8 is slidably connected to the bottom of the piston rod 4.

[0022] Furthermore, the outside of the main sleeve 1 is fixedly connected to an outer sleeve 9, the top of the outer sleeve 9 is fixedly connected to a tough steel rope 10, the side of the main sleeve 1 is fixedly connected to a bolt ring 11, and the side of the bolt ring 11 is connected to one end of the tough steel rope 10. Under the protection of the outer sleeve 9, the outside of the main sleeve 1 is protected to prevent external pressure from causing squeezing damage to the wall of the main sleeve 1. The tough steel rope 10 is added to prevent the air pressure rod from accidentally falling off during long-term use, thereby achieving a certain anti-fall and anti-fall effect.

[0023] Furthermore, a collision sensor 13 is fixedly connected to the lower surface of the inner wall of the buffer tube 5. The collision sensor 13 is located directly below the pressure buffer frame 7, and the collision sensor 13 and the pressure buffer frame 7 are not in contact. The collision sensor 13 that touches the sealing plate 14 in the pressure buffer frame 7 can be impacted and issue an alarm.

[0024] Furthermore, the top and bottom of the pressure relief frame 7 are both sealing plates 14, and a shock-absorbing spring 15 with a damping pad is fixedly connected between the surfaces of the two sealing plates 14. The shock-absorbing spring 15 between the two sealing plates 14 elastically expands and contracts under the action of compression, thereby playing an anti-extrusion buffering effect from above.

[0025] Example 2, please refer to Figures 1 to 4 The difference between this embodiment and embodiment 1 is that: a pressure-relief sleeve 12 is fixedly connected to the bottom of the inner wall of the inner sleeve 2, and the surface of the inner wall of the pressure-relief sleeve 12 is sealed and connected to the surface of the piston rod 4. A secondary protection sleeve 16 is fixedly connected to the top of the buffer sleeve 5, and a sealing ring 17 is fixedly connected to the top of the secondary protection sleeve 16, and the surface of the sealing ring 17 is slidably connected to the surface of the piston rod 4, and the piston rod 4 is located inside the secondary protection sleeve 16. The secondary protection sleeve 16 and the pressure-relief sleeve 12 are present at the lower air cylinder 8, which can enhance the sealing effect at the upper and lower parts of the piston rod 4.

[0026] Working principle: When the gas pressure rod with a buffer structure is in use, the staff can connect the main sleeve 1 and the outer sleeve 9 to protect the outside of the main sleeve 1 and prevent the external pressure from causing squeezing damage to the wall of the main sleeve 1. A tough steel rope 10 is added to prevent the gas pressure rod from accidentally falling off after long-term use, which has a certain anti-fall and anti-fall effect. When it is necessary to adjust the height and extension length of the entire gas pressure rod, the control switch of the gas pressure rod can be used to control the inlet and outlet air to adjust the air pressure. The piston rod 4 is raised and lowered under the control of the valve needle of the push rod 3. The bottom of the piston rod 4 will extend into the interior of the lower air cylinder 8, and there is a secondary protection cylinder 16 and a pressure-relief sleeve 1 at the lower air cylinder 8. 2. The sealing effect of the upper and lower parts of the piston rod 4 can be enhanced. If gas leakage occurs inside the gas pressure rod, the air below the piston rod 4 and the air above the piston rod 4 will be unbalanced, causing the piston rod 4 to be squeezed downward to the bottom of the lower air cylinder 8, causing the shock-absorbing spring 15 in the pressure relief frame 7 to be squeezed and contracted, playing an anti-extrusion buffering effect at the top. At the same time, the extrusion force exerted on the pressure relief frame 7 will continue to be transmitted downward. Under the action of the shock absorber 6, a secondary buffering unloading is performed to enhance the resistance. The collision sensor 13 that touches the sealing plate 14 in the pressure relief frame 7 can be hit and an alarm is issued, indicating that the gas pressure rod is in a dangerous state, thereby ensuring the buffering and shock-absorbing effect of the gas pressure rod in an emergency.

[0027] 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 gas pressure rod with a buffer structure, comprising a main sleeve (1), characterized in that: The interior of the main sleeve (1) is fixedly connected to an inner sleeve (2) with a deformation seam, the top of the inner sleeve (2) is connected to a push rod (3) with a valve needle, the inner wall of the inner sleeve (2) is connected to a piston rod (4), the bottom of the inner wall of the main sleeve (1) is fixedly connected to a buffer cylinder (5), the bottom of the inner wall of the buffer cylinder (5) is fixedly mounted with a shock absorber (6), the top of the shock absorber (6) is fixedly connected to a pressure relief frame (7), the top of the pressure relief frame (7) is fixedly connected to a lower air cylinder (8), and the surface of the inner wall of the lower air cylinder (8) is slidably connected to the bottom of the piston rod (4).

2. The gas pressure rod with a buffer structure according to claim 1, characterized in that: The outside of the main sleeve (1) is fixedly connected to an outer sleeve (9), the top of the outer sleeve (9) is fixedly connected to a tough steel rope (10), the side of the main sleeve (1) is fixedly connected to a bolt ring (11), and the side of the bolt ring (11) is connected to one end of the tough steel rope (10).

3. The gas pressure rod with a buffer structure according to claim 1, characterized in that: A pressure relief sleeve (12) is fixedly connected to the bottom of the inner wall of the inner sleeve (2), and the surface of the inner wall of the pressure relief sleeve (12) is sealingly connected to the surface of the piston rod (4).

4. The gas pressure rod with a buffer structure according to claim 1, characterized in that: A collision sensor (13) is fixedly connected to the lower surface of the inner wall of the buffer cylinder (5); the collision sensor (13) is located directly below the pressure buffer frame (7), and the collision sensor (13) and the pressure buffer frame (7) are not in contact.

5. The gas pressure rod with a buffer structure according to claim 1, characterized in that: The top and bottom of the pressure relief frame (7) are both sealing plates (14), and a shock absorbing spring (15) with a damping pad is fixedly connected between the surfaces of the two sealing plates (14).

6. The gas pressure rod with a buffer structure according to claim 1, characterized in that: The top of the buffer cylinder (5) is fixedly connected to a secondary protective cylinder (16), the top of the secondary protective cylinder (16) is fixedly connected to a sealing ring (17), the surface of the sealing ring (17) is slidably connected to the surface of the piston rod (4), and the piston rod (4) is located inside the secondary protective cylinder (16).

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