Hydraulic spring

Abstract

The utility model relates to the technical field of hydraulic springs, in particular to a hydraulic spring, which comprises a shell, an oil inlet section is arranged on one side of the shell, an oil storage tank is mounted on the oil inlet section, a pressure gauge is fixed on the oil inlet section, and the pressure gauge is mounted on the oil storage tank. A first connecting ball head and a second connecting ball head are arranged at the two ends of the interior of the shell respectively, an oil inlet hole is formed in the oil inlet section, a piston piece is arranged at the position of the oil inlet hole, and a filter ball is arranged in the piston piece; the hydraulic spring controlled by oil pressure is arranged between the first connecting ball head and the second connecting ball head, so that the load capacity of the spring is enhanced, the load transmission stability is improved, the supporting force range of the spring is adjusted, and the adaptability of the spring is improved; by arranging the filter ball, the effect of filtering before oil feeding is achieved, and the effect of sealing the oil inlet in a static state is also achieved; by arranging a gland and an extension pipe, the use convenience degree of the spring is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic spring, specifically, a kind of hydraulic spring. BACKGROUND

[0002] Hydraulic spring is the force spring that bears axial pressure, and it can realize elastic deformation using liquid pressure.Compared with traditional mechanical spring, hydraulic spring is widely used in many fields, including industrial automation, automobile manufacturing, aerospace, rail transportation, etc.In the field of industrial automation, hydraulic spring can be used for workpiece automation processing, which can effectively improve production efficiency.As a kind of elastic accessory, hydraulic spring is developing rapidly in humanoid robot industry.

[0003] The hydraulic spring in the related art achieves the buffering effect by the flow of oil in the oil cylinder, such as the hydraulic spring with patent number 202321411421.4.When supplementing oil, the oil is directly introduced into the oil cylinder through the oil feeding device.If there are precipitates and impurities in the oil, the piston will be worn during continuous movement, which not only greatly reduces the buffering effect, but also may cause the overall damage of the hydraulic spring.

[0004] Therefore, how to solve the technical problem of wear of the piston of the traditional hydraulic spring is a technical problem that needs to be solved in the field.

[0005] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the present application, and therefore, the above description is not considered to constitute prior art information. CONTENT OF THE UTILITY MODEL

[0006] The utility model provides a kind of hydraulic spring to solve the above technical problems.

[0007] In order to achieve the above purpose, the utility model embodiment provides a kind of hydraulic spring, comprising: a shell, an oil inlet section is provided on one side of the shell, an explosion-proof valve is provided on the other side of the shell, an oil storage tank is installed on the oil inlet section, a pressure gauge is fixed on the oil inlet section, a first connecting ball head and a second connecting ball head are respectively provided at both ends of the inside of the shell, an oil inlet hole is provided on the oil inlet section, a piston is provided at the position of the oil inlet hole, and a filter ball is provided in the piston.

[0008] Further, the piston comprises an extension pipe and a gland, a threaded groove is provided on the outer wall of both ends of the extension pipe, the threaded groove at one end is adapted to be connected with the gland, and the threaded groove at the other end is adapted to be connected with the oil inlet hole.

[0009] Further, the gland comprises a hexagonal block, a connecting ring is installed on one side of the hexagonal block, and a threaded strip corresponding to the threaded groove is provided on the inner wall of the connecting ring.

[0010] Further, the concentric position of the connecting ring is provided with an elastic pad.

[0011] Further, one end of the extension pipe is provided with a stop plate, one side of the stop plate is provided with an arc-shaped concave surface.

[0012] Further, the arc-shaped concave surface is provided with a through hole.

[0013] Further, two long grooves are opened on the inner wall of the extension pipe.

[0014] Further, the filter ball is arranged in the extension pipe, and the filter ball is hollow.

[0015] Further, two thickened sheets are arranged on the filter ball, a guide short column is fixed on the thickened sheet, the two thickened sheets are mirror images along the center line of the filter ball, and the two thickened sheets are connected through a plurality of arc-shaped strips.

[0016] Further, a plurality of micropores are arranged on the filter ball between the arc-shaped strips.

[0017] Compared with the prior art, the hydraulic spring has the beneficial effects that:

[0018] By arranging the hydraulic spring controlled by oil pressure between the first connecting ball head and the second connecting ball head, the load capacity of the spring is enhanced, the load transmission stability is improved, the spring supporting force range is adjusted, and the spring applicability is improved.

[0019] By arranging the filter ball, the oil inlet filtering effect before oil inlet is realized, and the oil inlet sealing effect when the device is static is realized.

[0020] By arranging the gland and the extension pipe, the piston can be taken out at will, and the convenience of the spring is improved.

[0021] By arranging the explosion-proof valve, the load is slowly released, and the safety of the device is ensured. DRAWINGS

[0022] The utility model will be further described below in combination with the drawings and examples.

[0023] Figure 1 It is a perspective view of the optimal embodiment of the hydraulic spring of the utility model;

[0024] Figure 2 It is a perspective view of the optimal embodiment of the piston of the utility model;

[0025] Figure 3 It is a perspective view of the optimal embodiment of the extension pipe and the filter ball of the utility model;

[0026] Figure 4The utility model extends the pipe's optimal embodiment's perspective drawing;

[0027] Figure 5 The utility model filter ball's optimal embodiment's perspective drawing.

[0028] Among them, 1, shell, 2, shell, 3, oil storage tank, 4, pressure gauge, 5, piston piece, 51, hexagonal block, 52, connecting ring, 53, elastic pad, 54, extension pipe, 55, filter ball, 56, stop plate, 57, through hole, 58, long slot, 59, arc strip, 510, thickening piece, 511, guide stub, 512, micropore, 6, first connecting ball head, 7, second connecting ball head, 8, explosion-proof valve. Specific implementation

[0029] Now make further detailed description to the utility model in conjunction with the drawings. These drawings are all simplified schematic diagrams, just with the schematic way to show the basic structure of the utility model, so it just shows the structure related to the utility model.

[0030] Please refer to Figure 1 , Figure 1 The utility model's optimal embodiment's perspective drawing of a kind of hydraulic spring. As Figure 1 Indicated, at least one embodiment provides a kind of hydraulic spring, comprising: shell 1, need further explanation, the hydraulic spring in this embodiment is substantially the same as related art composition, here is not described one by one, need further explanation, in the side of shell 1 is provided with oil inlet section 2, oil inlet section 2 is hollow, and the cavity between the outer wall of piston in shell 2 and the inner wall of shell 2 is communicated, for oil supplement, in addition, oil inlet section 2 is installed with oil storage tank 3, fixed with pressure gauge 4 on oil inlet section 2, the two ends in the shell 1 are respectively provided with first connecting ball head 6 and second connecting ball head 7, oil inlet hole is opened on oil inlet section 2, piston piece 5 is provided at the position of oil inlet hole, the main role of piston piece 5 is oil inlet, and sealing is realized under the condition of not needing oil inlet.

[0031] Please continue to refer to Figure 1 and combine Figure 2 , Figure 2 The utility model's optimal embodiment's perspective sectional view of piston piece. As Figures 1 to 2 Indicated, piston piece 5 includes extension pipe 54 and gland, the main role of gland is to filter ball 55 top to with stop plate 56 abuts, to realize sealing effect, gland includes hexagonal block 51, one side of hexagonal block 51 is installed with connecting ring 52, the inner wall of connecting ring 52 is provided with the thread strip corresponding with screw groove. The concentric position of connecting ring 52 is provided with elastic pad 53, after connecting ring 52 is screwed on extension pipe 54, elastic pad 53 and filter ball 55 abut.

[0032] Please continue to refer to Figure 2Combined with Figures 3 to 4 , Figure 3 A three-dimensional cross-sectional view of a preferred embodiment of the extension tube and filter ball of the present invention; Figure 4 This is a three-dimensional diagram of the optimal embodiment of the extension tube of the utility model. Figures 2 to 4 As shown, the outer walls of both ends of the extension tube 54 are provided with threaded grooves. The threaded groove at one end is suitable for connecting to the gland, and the threaded groove at the other end is suitable for connecting to the oil inlet. One end of the extension tube 54 is connected to the gland, and the other end is installed at the oil inlet position of the oil inlet section 2. A stop plate 56 is provided at one end of the extension tube 54, and a curved concave surface is provided on one side of the stop plate 56. A through opening 57 is provided on the curved concave surface. Two long grooves 58 are opened and closed on the inner wall of the extension tube 54, and the long grooves 58 are used to allow the guide short column 511 to slide along them. The inner diameter of the through opening 57 is smaller than the outer diameter of the thickened plate 510. This allows the thickened plate 510 of the filter ball 55 to form a sealing effect when it contacts the stop plate 56. When the curved strip 59 contacts the stop plate 56, the filtered oil can still enter the housing 1 through the through opening 57.

[0033] Please continue reading Figure 3 Combined with Figures 4 to 5 , Figure 5 This is a stereogram of the best embodiment of the filter ball of the utility model. Figures 3 to 5 As shown, a filter ball 55 is provided in the piston 5. The filter ball 55 is provided in the extension tube 54. The filter ball 55 has two directions and is provided in the extension tube 54. When oil needs to be replenished, as shown in FIG. Figure 3 As shown, the filter ball 55 slides into the extension tube 54 along the long groove 58 through the guide short column 511. Under the action of the oil pressure, the arc strip 59 and the stop plate 56 are at odds with each other. When it is not necessary to replenish the oil, the filter ball 55 after replenishing the oil is taken out, its surface is high-pressure cleaned, and then the filter ball 55 is inserted again. Figure 2 As shown, the central axial direction of the guide stud 511 overlaps the direction of movement, allowing the thickened sheet 510 to abut against the curved concave surface of the stop plate 56, achieving the sealing effect of the copper buckle 57. The following details the components of the filter ball 55. The filter ball 55 is hollow. Two thickened sheets 510 are provided on the filter ball 55. The curved outer surfaces of the thickened sheets 510 match the curved concave surface of the stop plate 56. Guide studs 511 are fixed to the thickened sheets 510. The two thickened sheets 510 are arranged in a mirrored manner along the centerline of the filter ball 55 and are connected by multiple curved bars 59. Micropores 512 are formed in the filter ball 55 between the curved bars 59. The curved bars 59 drive the filter ball 55 to rotate when oil is introduced, enhancing the filtration effect and preventing the accumulation of filtered residue.

[0034] An explosion-proof valve 8 is provided on the other side of the housing 1; if the equipment is overloaded, the pressure is released through the explosion-proof valve 8, and the load is slowly released to ensure the safety of the equipment.

[0035] In summary, by setting the hydraulic spring controlled by oil pressure between the first connecting ball head 6 and the second connecting ball head 7, the load capacity of the spring is enhanced, the load transmission stability is improved, the spring supporting force range is adjusted, and the spring applicability is improved; by setting the filter ball 55, not only the filtering effect before oil inlet is realized, but also the effect of sealing the oil inlet port at rest is realized; by setting the gland and the extension pipe, the piston 5 can be taken out at will, and the spring use convenience is improved; by setting the explosion-proof valve 8, the slow release of the load is realized, and the equipment safety is ensured.

[0036] With the above ideal embodiments of the present application as the inspiration, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. A hydraulic spring, characterized in that: include: A housing (1) is provided with an oil inlet section (2) on one side of the housing (1), an explosion-proof valve (8) is provided on the other side of the housing (1), an oil storage tank (3) is installed on the oil inlet section (2), a pressure gauge (4) is fixed on the oil inlet section (2), a first connecting ball head (6) and a second connecting ball head (7) are provided at both ends of the interior of the housing (1), an oil inlet hole is opened on the oil inlet section (2), a piston member (5) is provided at the position of the oil inlet hole, and a filter ball (55) is provided in the piston member (5).

2. A hydraulic spring according to claim 1, characterized in that: The piston member (5) comprises an extension tube (54) and a gland. Threaded grooves are provided on the outer walls of both ends of the extension tube (54). The threaded groove at one end is suitable for connecting with the gland, and the threaded groove at the other end is suitable for connecting with the oil inlet hole.

3. A hydraulic spring according to claim 2, characterized in that: The gland comprises a hexagonal block (51), a connecting ring (52) is installed on one side of the hexagonal block (51), and the inner wall of the connecting ring (52) is provided with a threaded strip corresponding to the threaded groove.

4. A hydraulic spring according to claim 3, characterized in that: An elastic pad (53) is provided concentrically with the connecting ring (52).

5. A hydraulic spring according to claim 4, characterized in that: A stop plate (56) is provided at one end of the extension tube (54), and an arc-shaped concave surface is provided on one side of the stop plate (56).

6. A hydraulic spring according to claim 5, characterized in that: A through opening (57) is provided on the arc-shaped concave surface.

7. A hydraulic spring according to claim 6, characterized in that: Two long slots (58) are opened and closed on the inner wall of the extension tube (54).

8. The hydraulic spring according to claim 7, characterized in that: The filter ball (55) is arranged in the extension tube (54), and the filter ball (55) is hollow.

9. The hydraulic spring according to claim 8, characterized in that: Two thickening plates (510) are provided on the filter ball (55), and a guide short column (511) is fixed on the thickening plate (510). The two thickening plates (510) are arranged in a mirror image along the center line of the filter ball (55), and the two thickening plates (510) are connected by a plurality of arc strips (59).

10. The hydraulic spring according to claim 9, characterized in that: Micropores (512) are provided on the filter balls (55) between the arc-shaped strips (59).

Images