Sectional type nitrogen spring structure

Abstract

The utility model relates to the technical field of nitrogen springs, and discloses a sectional type nitrogen spring structure, an arm strength guide rod assembly connected with a first plunger and a second plunger is installed in the middle of a cylinder body of a piston cylinder, and the arm strength guide rod assembly comprises a guide shaft sleeve installed in the middle of the cylinder body of the piston cylinder. One side of the sliding sleeve of the guide shaft sleeve is slidably connected with a first arm strength guide rod fixedly connected with the first plunger in a diagonal mode, and the other end of the sliding sleeve of the guide shaft sleeve is slidably connected with a second arm strength guide rod fixedly connected with the second plunger in a diagonal mode. When the nitrogen spring disclosed by the utility model is assembled and used, the piston cylinder is used as a main body structure, and under the positive and negative assembly adaptation of the first plunger and the second plunger, the arm force guide rod assembly is used as a telescopic brake guide part of the two groups of plungers, so that the nitrogen spring has stable sectional telescopic brake performance; telescopic braking is more stable, and the unbalance loading prevention capacity is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen springs, in particular to a segmented nitrogen spring structure. Background Art

[0002] The nitrogen spring is a component with elastic function that uses nitrogen as the gas source. It is gradually replacing elastic elements such as springs, rubbers, and air cushions with its advantages of stable elastic force, small size, reliable working performance, and long service life. As the application places of nitrogen springs gradually increase, its types and models are also gradually diversified. As shown in the two-stage nitrogen spring (public announcement number CN208982569U) disclosed on the China Patent Network, this type of device improves a piston rod of a traditional nitrogen spring into a first piston rod and a second piston rod. The second piston rod above plays the role of a piston rod, and the first piston rod plays the function of a piston rod and a housing. This can effectively make full use of the space of the nitrogen spring, thereby effectively increasing the use stroke of the nitrogen spring.

[0003] However, there are still some shortcomings in the above-mentioned public patents and the segmented nitrogen springs adopted in the existing market: the existing two sets of piston rod telescopic forms that use telescopic braking in the same direction, during the telescopic braking process, due to the gradual decrease in the rod diameter of the piston rod, although it can provide a longer braking stroke, its anti-biased load performance in telescopic braking is gradually weakened. To this end, those skilled in the art provide a segmented nitrogen spring structure to solve the problems raised in the above background technology. Utility Model Content

[0004] The main purpose of the utility model is to provide a segmented nitrogen spring structure, which can effectively solve the problem of poor anti-eccentric load and pressure resistance of the existing segmented nitrogen spring in the background technology.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a segmented nitrogen spring structure, including a piston cylinder, a first plunger connected and installed at one end of the piston cylinder body, and a second plunger connected and installed at the other end of the piston cylinder body;

[0006] An arm force guide rod assembly connected to the first plunger and the second plunger is installed in the middle of the cylinder body of the piston cylinder;

[0007] The arm force guide rod assembly includes a guide sleeve installed in the middle of the piston cylinder body, one side of the guide sleeve is slidably connected to a first arm force guide rod fixedly connected to the first plunger in an oblique diagonal manner, and the other end of the guide sleeve is slidably connected to a second arm force guide rod fixedly connected to the second plunger in an oblique diagonal manner;

[0008] The middle part of the cylinder body of the piston cylinder is connected to and installed with an air charging valve, and the middle part of the cylinder body of the piston cylinder is ringed with an opening and closing cover component opposite to the air charging valve.

[0009] As a further solution of the utility model: the two groups of the first arm force guide rods and the two groups of the second arm force guide rods are symmetrically arranged at an angle of ninety degrees relative to the axis of the guide sleeve.

[0010] As a further solution of the utility model: the bottom of the second plunger is provided with a first pair of mating holes in a diagonal form and horizontally opposite to the first arm force guide rod, and the bottom of the first plunger is provided with a second pair of mating holes in a diagonal form and horizontally opposite to the second arm force guide rod.

[0011] As a further solution of the utility model: the axis of the guide sleeve is penetrated by a conducting air hole which is in communication with the inflation valve.

[0012] As a further solution of the utility model: the opening and closing cover assembly includes a positioning seat symmetrically installed in the middle of the piston cylinder body, the interior of the positioning seat support is symmetrically installed with guide ring rods facing both sides of the inflation valve, the outer side of the arm rod of the guide ring rod is symmetrically sleeved with compression springs pressed relatively by the positioning seat, and the other end of the spring seat of the compression spring is provided with a guide slider guided by the guide ring rod, and the guide slider is fixedly connected to the opening and closing ring sleeve on the outer side of the inflation valve.

[0013] As a further solution of the utility model: an inflation port which is coincident with the inflation valve and opposite to the inflation valve is provided on the rotation path of the opening and closing ring sleeve.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. When the nitrogen spring of the utility model is assembled and used, the piston cylinder is used as the main structure, and the first plunger and the second plunger are assembled and adapted in the forward and reverse directions, and the arm force guide rod assembly is used as the telescopic brake guide component of the two groups of plungers. It has stable segmented telescopic braking performance, and the telescopic braking is more stable and the anti-eccentric load capacity is higher.

[0016] 2. During the use of the nitrogen spring of the utility model, the opening and closing cover assembly of the elastic opening and closing form is used to cover the closed cover of the inflation valve. When inflating, the opening and closing ring sleeve is rotated to expose the inflation valve. After the inflation is completed, the opening and closing ring sleeve is loosened to automatically close the inflation valve cover, isolating the interference of external dust, sewage and other factors, and facilitating subsequent inflation and air replenishment work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a segmented nitrogen spring structure of the utility model;

[0018] Figure 2 This is a first cross-sectional view of a segmented nitrogen spring structure of the utility model;

[0019] Figure 3 It is a second cross-sectional view of a segmented nitrogen spring structure of the utility model;

[0020] Figure 4 The utility model is a structural schematic diagram of an opening and closing cover assembly in a segmented nitrogen spring structure.

[0021] In the figure: 1. piston cylinder; 2. first plunger; 3. second plunger; 4. opening and closing ring sleeve; 5. inflation port; 6. inflation valve; 7. positioning seat; 8. guide ring rod; 9. compression spring; 10. guide slider; 11. guide shaft sleeve; 12. air hole; 13. first arm force guide rod; 14. second arm force guide rod; 15. first pair of mating holes; 16. second pair of mating holes. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Please refer to Figure 1-4As shown, a segmented nitrogen spring structure includes a piston cylinder 1, a first plunger 2 installed at one end of the piston cylinder 1, and a second plunger 3 installed at the other end of the piston cylinder 1. An arm force guide rod assembly connected to the first plunger 2 and the second plunger 3 is installed in the middle of the piston cylinder 1. The arm force guide rod assembly includes a guide sleeve 11 installed in the middle of the piston cylinder 1. One side of the sliding sleeve of the guide sleeve 11 is slidably connected to the first arm force guide rod 13 fixedly connected to the first plunger 2 in an oblique diagonal manner, and the other end of the sliding sleeve of the guide sleeve 11 is A second arm force guide rod 14 fixedly connected to the second plunger 3 is slidably connected in a diagonal manner. The two groups of first arm force guide rods 13 and the two groups of second arm force guide rods 14 are symmetrically arranged at an angle of ninety degrees relative to the axis of the guide sleeve 11. By utilizing the arm force guidance of the cross-formed first arm force guide rods 13, the second arm force guide rods 14 and the guide sleeve 11, it can be used as an auxiliary telescopic brake guide component to improve the stability of the vertical telescopic braking of the first plunger 2 and the second plunger 3, play an anti-eccentric load protection role, and improve the multifunctional adaptability of the nitrogen spring.

[0026] The bottom of the second plunger 3 is provided with a first mating hole 15 which is horizontally opposite to the first arm force guide rod 13 in a diagonal form, and the bottom of the first plunger 2 is provided with a second mating hole 16 which is horizontally opposite to the second arm force guide rod 14 in a diagonal form. By sequentially arranging the second mating hole 16 which is horizontally opposite to the second arm force guide rod 14 and the first mating hole 15 which is horizontally opposite to the first arm force guide rod 13 on the first plunger 2 and the second plunger 3, the corresponding arm force guide rods can be pushed to be inserted into the mating holes while the first plunger 2 and the second plunger 3 are synchronously telescoped and braked. On the one hand, the telescopic braking stroke of the two groups of plungers is made longer. On the other hand, the two groups of plungers can form an integrated force-bearing structure, thereby improving the pressure-bearing capacity and anti-eccentric load resistance of the overall structure of the nitrogen spring.

[0027] An air charging valve 6 is installed in the middle of the cylinder body of the piston cylinder 1, and an air hole 12 connected to the air charging valve 6 is opened through the axis of the guide sleeve 11. By utilizing the combination of the air charging valve 6 and the air hole 12, high-pressure nitrogen is filled into the piston cylinder 1 as a gas supporting medium.

[0028] The middle ring of the cylinder body of the piston cylinder 1 is provided with an opening and closing cover assembly opposite to the inflation valve 6. The opening and closing cover assembly includes a positioning seat 7 symmetrically installed in the middle of the cylinder body of the piston cylinder 1, and the support of the positioning seat 7 is symmetrically penetrated with guide ring rods 8 opposite to the two sides of the inflation valve 6. The outer side of the arm rod of the guide ring rod 8 is symmetrically provided with a compression spring 9 which is pressed against the positioning seat 7, and the other end of the spring seat of the compression spring 9 is provided with a guide slider 10 which guides the guide ring rod 8. By utilizing the elastic force combination of the compression spring 9 and the guide slider 10, the elastic force compression reset component can be used as a rotational form along the guide ring rod 8 to promote the rotational displacement of the opening and closing ring sleeve 4.

[0029] The guide slider 10 is fixedly connected to the opening and closing ring sleeve 4 on the outside of the inflation valve 6. An inflation port 5 that overlaps with the inflation valve 6 is opened on the rotation path of the opening and closing ring sleeve 4. When the nitrogen spring is inflated and inflated, the staff uses the annular guide of the guide slider 10 and the guide ring rod 8 to push the opening and closing ring sleeve 4 to rotate along the cylinder body of the piston cylinder 1, rotate and shift the inflation port 5 to overlap with the inflation valve 6, expose the inflation valve 6, and inflate the nitrogen spring. After the inflation and inflation are completed, it is only necessary to loosen the opening and closing ring sleeve 4, which is rotated and reset under the elastic force of the compression spring 9 and the guide slider 10, so that the inflation port 5 is offset and separated from the inflation valve 6, and the inflation valve 6 is protected in a closed form with a cover to isolate it from interference from external factors such as dust and sewage.

[0030] The working principle of the utility model is as follows: during the installation and use of the segmented nitrogen spring, based on the piston cylinder 1 as the main structure, under the positive and reverse telescopic braking combination of the first plunger 2 and the second plunger 3, a two-stage nitrogen spring structure is formed. When the first plunger 2 and the second plunger 3 are subsequently telescopically braked, the first arm force guide rod 13 and the second arm force guide rod 14 at the bottom thereof are pushed to synchronously guide and slide along the guide sleeve 11, which serves as an auxiliary telescopic braking guide component to improve the stability of the telescopic braking in the vertical direction of the first plunger 2 and the second plunger 3, and play an anti-eccentric load protection role. When the first plunger 2 and the second plunger 3 are over-pressed and the telescopic braking amplitude is large, the first plunger 2 and the second plunger 3 synchronously push the corresponding arm force guide rod to be inserted into the matching jack at the bottom of each of them, which, on the one hand, improves the telescopic braking stroke of the two groups of plungers, and on the other hand, enables the two groups of plungers to form an integrated force-bearing structure, thereby improving the pressure-bearing and anti-eccentric load properties of the overall structure of the nitrogen spring.

[0031] When it is necessary to inflate the nitrogen spring structure later, it is only necessary to push the opening and closing ring sleeve 4 to rotate along the cylinder body of the piston cylinder 1, rotate and shift the inflation port 5 to overlap and face the inflation valve 6, and expose the inflation valve 6, so that the nitrogen spring can be inflated and inflated. After the inflation and inflating are completed, it is only necessary to loosen the opening and closing ring sleeve 4, and based on the elastic force combination of the compression spring 9 and the guide slider 10, it can be rotated and reset, so that the inflation port 5 and the inflation valve 6 are offset and separated, and the inflation valve 6 is protected by a closed cover to isolate it from the interference of external dust, sewage and other factors, so as to facilitate the subsequent inflation again.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A segmented nitrogen spring structure, characterized in that: It comprises a piston cylinder (1), a first plunger (2) which is connected and mounted at one end of a cylinder body of the piston cylinder (1), and a second plunger (3) which is connected and mounted at the other end of the cylinder body of the piston cylinder (1); An arm force guide rod assembly connected to the first plunger (2) and the second plunger (3) is installed in the middle of the cylinder body of the piston cylinder (1); The arm force guide rod assembly comprises a guide sleeve (11) installed in the middle of a cylinder body of a piston cylinder (1), one side of a sliding sleeve of the guide sleeve (11) being slidably connected to a first arm force guide rod (13) fixedly connected to a first plunger (2) in an obliquely diagonal manner, and the other end of the sliding sleeve of the guide sleeve (11) being slidably connected to a second arm force guide rod (14) fixedly connected to a second plunger (3) in an obliquely diagonal manner; The middle part of the cylinder body of the piston cylinder (1) is connected to a charging valve (6) and is provided with an opening and closing cover assembly opposite to the charging valve (6) and is sleeved around the middle part of the cylinder body of the piston cylinder (1).

2. A segmented nitrogen spring structure according to claim 1, characterized in that: The two groups of the first arm force guide rods (13) and the two groups of the second arm force guide rods (14) are symmetrically arranged at an angle of ninety degrees relative to the axis of the guide shaft sleeve (11).

3. A segmented nitrogen spring structure according to claim 1, characterized in that: The bottom of the second plunger (3) is provided with a first mating plug hole (15) in a diagonally opposite manner and horizontally opposite to the first arm force guide rod (13), and the bottom of the first plunger (2) is provided with a second mating plug hole (16) in a diagonally opposite manner and horizontally opposite to the second arm force guide rod (14).

4. A segmented nitrogen spring structure according to claim 1, characterized in that: The guide shaft sleeve (11) has an axial center through which a communication hole (12) communicating with the inflation valve (6) is formed.

5. A segmented nitrogen spring structure according to claim 1, characterized in that: The opening and closing cover assembly comprises a positioning seat (7) symmetrically mounted on the middle of the cylinder body of the piston cylinder (1); a guide ring rod (8) symmetrically penetrates the support of the positioning seat (7) and is directly opposite to the two sides of the inflation valve (6); a compression spring (9) is symmetrically sleeved on the outer side of the arm of the guide ring rod (8) for pressing against the positioning seat (7); and a guide slider (10) is provided at the other end of the spring seat of the compression spring (9) for guiding the guide ring rod (8); and the guide slider (10) is fixedly connected to the opening and closing ring sleeve (4) sleeved on the outer side of the inflation valve (6).

6. A segmented nitrogen spring structure according to claim 5, characterized in that: An inflation port (5) which overlaps and is opposite to the inflation valve (6) is provided on the rotation path of the opening and closing ring sleeve (4).

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