Rising type pneumatic supporting cylinder

Abstract

The utility model relates to the technical field of air cylinders, in particular to a rising type pneumatic supporting cylinder which comprises a cylinder barrel, an upper cover and a bottom cover are installed at the two ends of the cylinder barrel respectively, an air inlet hole is formed in the cylinder barrel, and the position of the air inlet hole can be the side wall of the cylinder barrel. A supporting rod is movably inserted into the cylinder barrel, penetrates through the upper cover and is used for stably supporting a target object; the lifting driving assembly is matched with the supporting rod, and the supporting rod can be driven by the lifting driving assembly to extend out of the cylinder barrel; a jacket assembly and a piston piece are arranged in the cylinder barrel, and the jacket assembly is arranged on the outer side of the supporting rod in a sleeving mode; the piston piece is movably installed in the cylinder barrel and arranged on the outer side of the clamping sleeve assembly in a sleeving mode. According to the example, the piston piece moves downwards to drive the clamping sleeve assembly to tightly hold the supporting rod so as to lock the axial position of the supporting rod; an impact assembly is arranged on the side, away from the upper cover, of the supporting rod. And in the impact posture, airflow entering from the air inlet pushes the impact assembly so as to eject the supporting rod out of the cylinder barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinders, in particular to a rising type pneumatic support cylinder. Background Art

[0002] The support rod components in the existing pneumatic support cylinders have reduced flexibility due to long-term exposure to harsh working environments, resulting in reduced clearance and adhesion caused by dust, oil sludge, and rust powder. The current mainstream solution is to use a strong spring or a lubricating coating structure / process to maximize the reliability of the support rod's movement. However, these technical means can only slightly improve and have limitations, and cannot fundamentally improve the piston rod jamming phenomenon caused by the increasing movement resistance caused by the long-term influence of external pollution sources. Utility Model Content

[0003] In order to solve the problem that the support rod in the existing pneumatic support cylinder is easy to get stuck, the utility model provides a rising type pneumatic support cylinder.

[0004] The technical solution of the utility model is:

[0005] On the one hand, the utility model provides a lifting type pneumatic support cylinder, characterized in that: it includes

[0006] A cylinder barrel, an air inlet hole is provided on the cylinder barrel, an upper cover and a bottom cover are respectively installed at both ends of the cylinder barrel, a support rod is movably inserted in the cylinder barrel and the support rod passes through the upper cover;

[0007] A jacket assembly is installed in the cylinder and sleeved on the outside of the support rod;

[0008] A piston member, movably mounted in the cylinder and disposed outside the jacket assembly, for driving the jacket assembly to lock the axial position of the support rod;

[0009] The impact assembly is movably arranged on a side of the support rod away from the upper cover; in the impact posture, the airflow entering from the air inlet pushes the impact assembly to push the support rod outward from the cylinder.

[0010] Furthermore, a first cavity is provided in the support rod; the impact assembly includes

[0011] a striker, movably disposed in the first cavity;

[0012] The first piston has a first end connected to the striker and a second end used for receiving the airflow entering the air inlet.

[0013] Furthermore, a second abutment portion is provided on the outer periphery of the striker, a rising elastic component is sleeved on the outer side of the striker, and the rising elastic component is located on a side of the second abutment portion away from the bottom cover.

[0014] Furthermore, a piston cavity is provided in the bottom cover, and the first piston is installed in the piston cavity.

[0015] Furthermore, a first elastic component is provided on the side of the first piston facing away from the bottom cover; the elastic force of the first elastic component is greater than the elastic force of the rising elastic component; and the piston cavity is connected to the air inlet hole and the air inlet hole is always located on the side of the first piston facing the bottom cover.

[0016] Furthermore, a first air hole is formed on the side wall of the piston cavity; a second air hole is formed on the side wall of the piston member, a first end of the second air hole is connected to the first air hole, and a second end of the second air hole is connected to the downward push surface of the piston member.

[0017] Furthermore, after the support rod passes through the upper cover, a protective cover is provided on the outer sealing cover thereof, and the protective cover is suitable for moving with the support rod.

[0018] Furthermore, the upper cover has a vertical position, the first end of the protective cover is sealedly connected to the support rod, and a cleaning ring is provided between the second end of the protective cover and the vertical position.

[0019] Furthermore, a support head is provided on the top of the protective cover, and the support head, the protective cover and the support rod are connected in sequence from top to bottom by screws.

[0020] Furthermore, a cleaning air path is provided in the cylinder barrel for cleaning out foreign matter inside the cylinder barrel.

[0021] The beneficial effects achieved by the utility model are:

[0022] The embodiment of the present application is a lifting type pneumatic support cylinder, comprising a cylinder barrel, an upper cover and a bottom cover are respectively installed at both ends of the cylinder barrel, an air inlet hole is provided on the cylinder barrel, and the position of the air inlet hole can be the side wall of the cylinder barrel; a support rod is movably inserted in the cylinder barrel and the support rod passes through the upper cover, and the support rod is used to achieve stable support for the target object; a lifting drive assembly is arranged in cooperation with the support rod, and the support rod can be driven to extend out of the cylinder barrel through the lifting drive assembly; a jacket assembly and a piston member are arranged in the cylinder barrel, and the jacket assembly is sleeved on the outside of the support rod; the piston member is movably installed in the cylinder barrel and sleeved on the outside of the jacket assembly; illustratively: the piston member moves downward to drive the jacket assembly to hold the support rod tightly to lock the axial position of the support rod; an impact assembly is arranged on the side of the support rod away from the upper cover; in the impact posture, The airflow entering the air inlet pushes the impact assembly to push the support rod outward from the cylinder; so that the support rod is hit once each time it is working, giving the support rod a greater lifting force, thereby overcoming the movement resistance caused by the pollution source, and ensuring that the support rod subsequently runs smoothly under the drive of the rising drive assembly; in a complete use process, the airflow enters from the air inlet and first pushes the impact assembly to hit the support rod to give it a greater lifting force; and after the support rod is hit by the impact assembly, the rising drive assembly drives the support rod to continue to move upward until the top of the support rod contacts the target object, and then the airflow continues to move to drive the piston to move downward. When the piston moves, it drives the jacket assembly to hold the support rod tightly, thereby locking the axial position of the support rod, ensuring stable support for the target object. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application and, together with the description, are used to explain the principles of the present application.

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0026] Figure 1 It is a schematic diagram of the main structure of an embodiment of the present application;

[0027] Figure 2 yes Figure 1 Section view along line AA;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of an embodiment of the present application.

[0029] In the figure,

[0030] 100, cylinder barrel; 200, support rod; 300, jacket assembly; 400, impact assembly; 500, piston member; 110, air inlet; 120, upper cover; 121, upright position; 130, bottom cover; 131, piston chamber; 1311, first air hole; 140, second cavity; 210, first cavity: 211, first abutment; 220, cleaning ring; 230, support head; 240, protective cover; 410, striker; 411, second abutment; 412, rising elastic assembly; 420, first piston; 421, first elastic assembly; 510, second air hole; 520, second elastic assembly. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0032] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0033] For ease of description, spatial relative terms may be used in the text to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below ······" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0034] Embodiment 1

[0035] The embodiment of the present application discloses a lifting type pneumatic support cylinder, including a cylinder barrel 100, an air inlet hole 110 is provided on the cylinder barrel 100, an upper cover 120 and a bottom cover 130 are respectively installed at both ends of the cylinder barrel 100, a support rod 200 is movably inserted in the cylinder barrel 100 and the support rod 200 passes through the upper cover 120; a lifting drive assembly is arranged in cooperation with the support rod 200, and the lifting drive assembly can drive the support rod 200 to extend out of the cylinder barrel 100, and a jacket assembly 300 is installed in the cylinder barrel 100 and is sleeved on the outside of the support rod 200; the piston member 500 is movably installed in the cylinder 100 and is sleeved on the outside of the jacket assembly 300, so as to drive the jacket assembly 300 to lock the axial position of the support rod 200; the impact assembly 400 is movably arranged on the side of the support rod 200 away from the upper cover 120; in the impact posture, the airflow entering from the air inlet 110 pushes the impact assembly 400 to push the support rod 200 out to the outside of the cylinder 100.

[0036] like Figure 2As shown, in this embodiment, the embodiment of the present application is a lifting type pneumatic support cylinder, including a cylinder barrel 100, an upper cover 120 and a bottom cover 130 are respectively installed at both ends of the cylinder barrel 100, an air inlet 110 is provided on the cylinder barrel 100, and the position of the air inlet 110 can be the side wall of the cylinder barrel 100; a support rod 200 is movably inserted in the cylinder barrel 100 and the support rod 200 passes through the upper cover 120, and the support rod 200 is used to achieve stable support for the target object; a lifting drive component is arranged in cooperation with the support rod 200, and the lifting drive component is provided in cooperation with the support rod 200. The movable assembly can drive the support rod 200 to extend out of the cylinder 100; the cylinder 100 is provided with a jacket assembly 300 and a piston member 500, and the jacket assembly 300 is sleeved on the outside of the support rod 200; the piston member 500 is movably installed in the cylinder 100 and sleeved on the outside of the jacket assembly 300; exemplary: the piston member 500 moves downward to drive the jacket assembly 300 to hold the support rod 200 tightly to lock the axial position of the support rod 200; an impact assembly 400 is provided on the side of the support rod 200 away from the upper cover 120; In the impact posture, the airflow entering from the air inlet 110 pushes the impact assembly 400 to push the support rod 200 outward from the cylinder 100; so that each time the support rod 200 is working, it will be hit once, giving the support rod 200 a greater lifting force, thereby overcoming the movement resistance caused by the pollution source, and ensuring that the support rod 200 subsequently runs smoothly under the drive of the lifting drive assembly; in a complete use process, the airflow entering from the air inlet 110 first pushes the impact assembly 400 to hit the support rod 200 It is given a greater lifting force to overcome possible blockages, and after the support rod 200 is hit by the impact assembly 400, the lifting drive assembly drives the support rod 200 to continue to move upward until the top of the support rod 200 is against the target object; then the airflow continues to move to drive the piston 500 to move downward, and when the piston 500 moves, it drives the jacket assembly 300 (the jacket assembly 300 is a prior art and will not be described here) to hold the support rod 200 tightly, thereby locking the axial position of the support rod 200 to ensure stable support for the target object.

[0037] In an optional embodiment, a first cavity 210 is opened in the support rod 200; the impact assembly 400 includes a striker 410, which is movably arranged in the first cavity 210; a first piston 420, a first end of which is connected to the striker 410, and a second end is used to contact and bear force with the airflow entering from the air inlet 110.

[0038] like Figure 2As shown, in the present embodiment, the impact assembly 400 includes a striker 410 and a first piston 420 connected to the striker 410, a first cavity 210 is opened in the support rod 200, and the striker 410 is movably arranged in the first cavity 210; the first piston 420 faces the air inlet 110; when in use, the airflow in the air inlet 110 pushes the first piston 420 to drive the striker 410 to impact the inner top of the support rod 200; it can be understood that the support rod 200 has a first cavity 210, and the side of the first cavity 210 facing the upper cover 120 is a force-bearing part, which can be integrally formed with the support rod 200 itself, or a force-bearing part can be fixedly connected to the support rod 200 to withstand the impact of the striker 410.

[0039] In an optional embodiment, a first abutment portion 211 is provided in the first cavity 210, and a second abutment portion 411 is provided on the outer periphery of the striker 410, and the first abutment portion 211 is used to axially limit the second abutment portion 411 and determine the lower limit position of the second abutment portion 411 in the axial direction; a rising elastic component 412 is sleeved on the outer side of the striker 410 and the rising elastic component 412 is located on the side of the second abutment portion 411 away from the first abutment portion 211.

[0040] In this embodiment, the rising elastic component 412 can be a spring, and a second abutment portion 411 is arranged on the peripheral side of the striker 410. The spring is sleeved on the striker 410 and limited by the second abutment portion 411. The first abutment portion 211 is arranged in the first cavity 210, and the first abutment portion 211 is used to determine the lower limit position of the second abutment portion 411 in the axial direction. When the airflow drives the striker 410 to hit the support rod 200, the rising elastic component 412 is compressed. When the airflow drives the striker 410 to move to the extreme position, the rising elastic component 412 gives the support rod 200 power to continue to rise.

[0041] In an optional embodiment, a piston cavity 131 is opened in the bottom cover 130, in which the first piston 420 is installed, and the first elastic component 421 is sleeved on the outer side of the first piston 420; the piston cavity 131 is connected to the air inlet hole 110 and the air inlet hole 110 is always located on the side of the first piston 420 away from the upper cover 120.

[0042] In the present embodiment, since the piston cavity 131 is connected with the air inlet 110 and the air inlet 110 is always located on the side of the first piston 420 away from the upper cover 120, it can be ensured that the first piston 420 can be driven by the airflow, thereby completing the rising action or the holding action after reaching the limit position; in the working state, air is taken in at the air inlet 110, and the airflow pushes the first piston 420 to move upward in the piston cavity 131, and the first piston 420 drives the striker 410 to hit the support rod 200 while compressing the first elastic component 421; after the striker 410 hits the support rod 200, the blockage is eliminated, and then the rising elastic component 412 drives the support rod 200 to continue to rise until it abuts the target object; then the airflow pushes the piston member 500 to move downward, thereby driving the jacket component 300 to hold the support rod 200 tightly to lock the position; when the air inlet 110 no longer takes in air, the first elastic component 421 is reset, thereby driving the first piston 420 to move downward to its original position; optionally, the first elastic component 421 is a spring.

[0043] In an optional embodiment, the elastic force of the first elastic component 421 is greater than the elastic force of the rising elastic component 412; when no gas enters the cylinder 100, since the elastic force of the first elastic component 421 is greater than the elastic force of the rising elastic component 412, the first elastic component 421 can overcome the elastic force of the rising elastic component 412 to pull the support rod 200 downward to the lower limit of the stroke; when the airflow pushes the first piston 420 to rise to the upper limit position of the piston chamber 131, the first elastic component 421 is compressed, which is equivalent to its downward traction force being continuously offset. At this time, the rising elastic component 412 drives the support rod to perform the rising action.

[0044] In an optional embodiment, a first air hole 1311 is opened on the side wall of the piston chamber 131; a second air hole 510 is opened on the side wall of the piston member 500, a first end of the second air hole 510 is connected to the first air hole 1311, and a second end of the second air hole 510 is connected to the downward pushing surface of the piston member 500 for pushing down the piston member 500 and thereby driving the sleeve assembly 300 to hold the support rod 200 tightly.

[0045] In this embodiment, in the initial state, the first piston 420 is located in the lower space of the piston chamber 131, and the first air hole 1311 is located on the upper side of the first piston 420; therefore, when air flows into the air inlet 110, the air flow can only push the first piston 420 first (the first piston 420 drives the striker 410 to strike the support rod 200 upward), and when the first piston 420 moves upward to a position beyond the first air hole 1311, the air flow enters the first air hole 1311, and then enters the vertical second air hole 510 to the piston 420. The piston member 500 is above the pushing surface of the piston member 500, and at this time, the airflow gives the piston member 500 a force to move downward; the piston member 500 squeezes the jacket assembly 300 downward (the jacket assembly 300 is a prior art and will not be described in detail here. It can be roughly understood that the piston member 500 moves downward, and through the cooperation of the wedge surface, one of the components in the jacket assembly 300 is laterally displaced to clamp the support rod 200), so that the jacket assembly 300 holds the support rod 200 tightly to achieve axial position locking of the support rod 200.

[0046] Optionally, the first piston 420 is a T-shaped structure, and its maximum outer diameter section moves up and down in the piston cavity 131; the inner upper end of the base 130 is also formed with a second cavity 140 connected to the piston cavity 131, and a part of the slender section of the T-shaped first piston 420 is located in the second cavity 140, and the first elastic component 421 is sleeved on the outside of the slender section of the first piston 420; the first elastic component 421 is confined between the second cavity 140 and the first piston 420, and the second cavity 140 is connected to the first cavity 210; the tail end of the slender section of the first piston 420 is connected to one end of the striker 410; this design is used to form an impact component located on one side of the support rod 200, which is convenient for guiding the movement of the impact component.

[0047] In an optional embodiment, a second elastic component 520 is arranged between the piston member 500 and the bottom cover 130; when airflow continues to enter, the piston member 500 is pushed to move downward to compress the second elastic component 520. When the airflow no longer enters, the second elastic component 520 is reset to drive the piston member 500 back to the initial position. After the pressure of the jacket 300 is eliminated, the support rod 200 is released to facilitate the next action. Optionally, the second elastic component 520 is a spring.

[0048] In an optional embodiment, after the support rod 200 passes through the upper cover 120, a protective cover 240 is provided on its outer sealing cover, and the protective cover 240 is suitable for moving with the support rod 200; the support rod 200 is protected by the protective cover 240 to prevent foreign matter from entering.

[0049] In an optional embodiment, the upper cover 120 has a vertical position 121, the first end of the protective cover 240 is sealed to the support rod 200, and a cleaning ring 220 is arranged between the second end of the protective cover 240 and the vertical position 121; the cleaning ring 220 itself can play a dust and dirt prevention effect, and the cleaning ring 220 can actively scrape off foreign matter on the vertical position 121 of the upper cover 120 by moving up and down with the support rod 200, so as to prevent the continuous accumulation of pollution sources.

[0050] Optionally, the cleaning ring 220 is made of felt, which can automatically adapt to the neck shape of the upper cover 120. At the same time, the soft honeycomb structure of the material itself can effectively absorb the impact and penetration of the cutting fluid. The cleaning ring 220 can also be made of soft materials such as rubber, silicone, and dustproof ring.

[0051] In an optional embodiment, a support head 230 is provided on the top of the protective cover 240, and the support head 230, the protective cover 240 and the support rod 200 are connected in sequence from top to bottom by screws: the support head 230, the protective cover 240 and the support rod 200 are connected as a whole for easy movement.

[0052] In an optional embodiment, a cleaning air path is provided in the cylinder 100 to clean out foreign matter inside the cylinder 100 .

[0053] In an optional embodiment, the cylinder 100 and the upper cover 120 may be stepped or straight, and their shapes are not limited.

[0054] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0055] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0056] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A lifting type pneumatic support cylinder, characterized in that: include A cylinder barrel (100), an air inlet hole (110) is provided on the cylinder barrel (100), an upper cover (120) and a bottom cover (130) are respectively installed at two ends of the cylinder barrel (100), a support rod (200) is movably inserted in the cylinder barrel (100) and the support rod (200) passes through the upper cover (120); A jacket assembly (300) is installed in the cylinder (100) and sleeved on the outside of the support rod (200); An ascending drive assembly, used for driving the support rod (200) to ascend; A piston member (500) is movably mounted in the cylinder barrel (100) and is disposed outside the jacket assembly (300) so as to drive the jacket assembly (300) to lock the axial position of the support rod (200); An impact assembly (400) is movably arranged on a side of the support rod (200) away from the upper cover (120); in an impact posture, the airflow entering from the air inlet (110) pushes the impact assembly (400) to push the support rod (200) outward from the cylinder (100).

2. A lifting type pneumatic support cylinder according to claim 1, characterized in that: The support rod (200) has a first cavity (210) formed therein; the impact assembly (400) comprises A striker (410) movably disposed in the first cavity (210); The first piston (420) has a first end connected to the striker (410) and a second end used to receive the airflow entering the air inlet (110).

3. A lifting type pneumatic support cylinder according to claim 2, characterized in that: The ascending driving assembly comprises a second abutting portion (411), which is arranged on the outer periphery of the striker (410); and an ascending elastic assembly (412), which is arranged on the outer side of the striker (410) and is located on a side of the second abutting portion (411) away from the bottom cover (130).

4. A lifting type pneumatic support cylinder according to claim 3, characterized in that: A piston cavity (131) is provided in the bottom cover (130), and the first piston (420) is cooperatively installed in the piston cavity (131).

5. A lifting type pneumatic support cylinder according to claim 4, characterized in that: A first elastic component (421) is provided on the side of the first piston (420) facing away from the bottom cover (130); the elastic force of the first elastic component (421) is greater than the elastic force of the rising elastic component (412); and the piston cavity (131) is connected to the air inlet hole (110), and the air inlet hole (110) is always located on the side of the first piston (420) facing the bottom cover (130).

6. A lifting type pneumatic support cylinder according to claim 4, characterized in that: A first air hole (1311) is formed on the side wall of the piston chamber (131); a second air hole (510) is formed on the side wall of the piston member (500), a first end of the second air hole (510) is connected to the first air hole (1311), and a second end of the second air hole (510) is connected to the downward push surface of the piston member (500).

7. A lifting type pneumatic support cylinder according to any one of claims 1 to 6, characterized in that: After the support rod (200) passes through the upper cover (120), a protective cover (240) is provided on the outer sealing cover thereof, and the protective cover (240) is suitable for moving with the support rod (200).

8. The lifting type pneumatic support cylinder according to claim 7, characterized in that: The upper cover (120) has a vertical position (121), a first end of the protective cover (240) and the support rod (200) are sealed, and a cleaning ring (220) is provided between the second end of the protective cover (240) and the vertical position (121).

9. The lifting type pneumatic support cylinder according to claim 7, characterized in that: A support head (230) is provided on the top of the protective cover (240), and the support head (230), the protective cover (240) and the support rod (200) are connected in sequence from top to bottom by screws.

10. A lifting type pneumatic support cylinder according to any one of claims 1 to 6, characterized in that: A cleaning air path is provided in the cylinder (100) for cleaning out foreign matter inside the cylinder (100).

Images