Hydraulic support with hinge shaft rust-proof mechanism

Abstract

The utility model provides a hydraulic support with an articulated shaft rust-proof mechanism. The hydraulic support comprises a support base and a plurality of articulated arms arranged on the support base. Hinge shaft anti-rust mechanisms are respectively arranged at the hinged parts of the bracket base and the hinge arms and at the hinged parts of two adjacent hinge arms; the hinged shaft rust-proof mechanism comprises hinged shaft sleeve parts and a liquid supply pipeline, the hinged shaft sleeve parts are fixed to the two ends of the hinged arm, the hinged shaft sleeve parts are externally connected with a backwashing filter through the liquid supply pipeline, and the hinged shaft sleeve parts are used for storing emulsified liquid discharged by the backwashing filter; and the articulated shaft arranged in the articulated shaft sleeve piece is lubricated. According to the hydraulic support with the hinge shaft rust-proof mechanism, the rust-proof and lubricating capacity of the hinge shaft can be improved on the premise that the structural strength is not reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic supports, specifically to a hydraulic support with a hinge shaft anti-rust mechanism. Background Technology

[0002] After a period of use, hydraulic supports at the working face often suffer from severe corrosion, making the articulated shaft difficult or even impossible to disassemble. This is especially problematic in coal mines where underground transportation conditions are limited and disassembly is necessary. The corrosion of the articulated shaft hinders disassembly, thus impacting the efficiency of the entire working face relocation. Currently, the industry commonly uses a coating process on the outer surface of the articulated shaft and adds oil injection holes for rust prevention. However, the rust prevention effect of the coating is limited by the quality of underground water, and the coating may peel off during use. Furthermore, because the hydraulic support articulated bearings are subjected to large concentrated loads, drilling holes in the articulated shaft can easily cause stress concentration, affecting the lifespan of the articulated shaft.

[0003] For example, utility model patent CN211599260U discloses a pin shaft with an oil lubrication structure for hydraulic supports, including a pin shaft body and oil seals. Two oil seals are detachably assembled on the two end faces of the pin shaft body. The oil seals include an internal hexagonal set screw and a cross-head pan head screw. A through-hole is formed in the axial center of the pin shaft body, and an oil guide groove is circumferentially provided at each end of the pin shaft body. Radial oil seepage holes are provided at the two oil guide grooves. When this pin shaft with an oil lubrication structure is used in hydraulic supports with high extraction heights, the pin shaft is easy to assemble and disassemble, which can extend the service life and maintenance cycle of the hydraulic support. However, because the through-hole is formed in the axial center of the pin shaft, the structural strength of the pin shaft is reduced. Utility Model Content

[0004] In order to improve the rust prevention and lubrication capabilities of the hinge shaft without reducing the structural strength, the technical solution adopted by this utility model is: a hydraulic support with a hinge shaft rust prevention mechanism, including a support base and a plurality of hinge arms disposed on the support base.

[0005] The bracket base and the hinge arm are respectively provided with a hinge shaft anti-rust mechanism at the hinge joint and the hinge joint of two adjacent hinge arms.

[0006] The rust prevention mechanism for the hinge shaft includes a hinge shaft sleeve and a liquid supply pipe. The hinge shaft sleeve is fixed at both ends of the hinge arm. A backwash filter is externally connected to the hinge shaft sleeve through the liquid supply pipe. The hinge shaft sleeve is used to store the emulsion discharged by the backwash filter and to lubricate the hinge shaft installed inside the hinge shaft sleeve.

[0007] Based on the above, in order to shorten the liquid supply path and improve the structural strength of the liquid supply pipeline, the liquid supply pipeline includes a liquid supply hose and a liquid supply branch pipe. A portion of the hinged bushing is directly connected to the backwash filter via the liquid supply hose, while another portion of the hinged bushings are connected in pairs to the liquid supply hose via the liquid supply branch pipe. The liquid supply branch pipe is made of hollow stainless steel and is installed in the cavity of the hinged arm.

[0008] Based on the above, in order to facilitate separate liquid supply using a set of backwash filters, a first tee connector is provided on the liquid supply hose, and a branch pipe connector and a second tee connector are provided on the liquid supply branch pipe.

[0009] Based on the above, the plurality of hinge arms include a first hinge arm, a second hinge arm, a third hinge arm, and a fourth hinge arm;

[0010] The lower end of the fourth hinge arm is hinged to the bracket base, the upper end of the fourth hinge arm is hinged to the lower end of the second hinge arm, and the upper end of the second hinge arm is hinged to one end of the third hinge arm.

[0011] The upper end of the first hinge arm is hinged to the middle of the second hinge arm, and the lower end of the second hinge arm is hinged to the top of the support base.

[0012] Based on the above, in order to facilitate the storage of emulsion, the inner diameter of the hinged bushing is larger than the diameter of the hinged shaft.

[0013] Based on the above, in order to improve structural stability, a first hinge arm is used to stably support a second hinge arm, including a pair of first hinge arms, wherein the width of the bracket base is greater than the width of the first hinge arm, and the width of the second hinge arm is greater than the width of the first hinge arm.

[0014] That is, a pair of first hinge arms are arranged side by side along the width direction of the second hinge arm.

[0015] This utility model has substantial features and progress compared to the prior art. Specifically, the hydraulic support with a hinge shaft anti-rust mechanism provided by this utility model welds a hinge shaft sleeve at the hinge shaft mounting hole and connects the hinge shaft sleeve to the waste emulsion discharged from backwashing through a pipe. This allows the waste emulsion discharged from backwashing to be diverted to the large hinge shaft of the hydraulic support. The continuous discharge of waste emulsion through backwashing prevents the hinge shaft from rusting.

[0016] Therefore, the hydraulic support with a rust prevention mechanism for the hinge shaft improves the rust prevention and lubrication capabilities of the hinge shaft without reducing the structural strength, solves the problem of rust on large hinge shafts, and also realizes the secondary utilization of waste emulsion. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the hydraulic support with a hinge shaft anti-rust mechanism provided by this utility model.

[0018] Figure 2 This is a partial structural diagram of the hydraulic support with a hinge shaft anti-rust mechanism provided by this utility model.

[0019] In the diagram: 1. Backwash filter; 2. First hinged arm; 3. Liquid supply hose; 4. Support base; 5. Second hinged arm; 6. First tee connector; 7. Third hinged arm; 8. Fourth hinged arm; 9. Hinge sleeve; 10. Liquid supply branch pipe; 11. Branch pipe connector; 12. Second tee connector. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0021] Example 1

[0022] This embodiment provides a hydraulic support with a hinge shaft anti-rust mechanism, such as... Figure 1 , Figure 2 As shown, it includes a support base 4 and several hinged arms disposed on the support base 4.

[0023] The bracket base 4 is provided with a rust prevention mechanism at the hinge joint between the bracket base 4 and the hinge arm, and at the hinge joint between the two hinge arms.

[0024] The rust prevention mechanism for the hinge shaft includes a hinge shaft sleeve 9 and a liquid supply pipe. The hinge shaft sleeve 9 is fixed to both ends of the hinge arm. A backwash filter 1 is externally connected to the hinge shaft sleeve 9 through the liquid supply pipe. The hinge shaft sleeve 9 is used to store the emulsion discharged from the backwash filter 1 and to lubricate the hinge shaft installed inside the hinge shaft sleeve 9.

[0025] Specifically, the plurality of hinge arms includes a first hinge arm 2, a second hinge arm 5, a third hinge arm 7, and a fourth hinge arm 8. The lower end of the fourth hinge arm 8 is hinged to the support base 4. The upper end of the fourth hinge arm 8 is hinged to the lower end of the second hinge arm 5, and the upper end of the second hinge arm 5 is hinged to one end of the third hinge arm 7.

[0026] The upper end of the first hinge arm 2 is hinged to the middle of the second hinge arm 5, and the lower end of the second hinge arm 5 is hinged to the top of the bracket base 4.

[0027] Example 2

[0028] This embodiment provides a hydraulic support with a rust-proof mechanism for the hinge shaft. The main difference from Embodiment 1 is that, in this embodiment, to shorten the fluid supply path and improve the structural strength of the fluid supply pipeline, the fluid supply pipeline includes a fluid supply hose 3 and a fluid supply branch pipe 10. A portion of the hinge shaft sleeve 9 is directly connected to the backwash filter 1 via the fluid supply hose 3. Another portion of the hinge shaft sleeve 9 are connected in pairs to the fluid supply hose 3 via the fluid supply branch pipe 10. The fluid supply branch pipe 10 is made of hollow stainless steel and is installed in the cavity of the hinge arm.

[0029] Example 3

[0030] This embodiment provides a hydraulic support with a hinge shaft anti-rust mechanism. The main difference from embodiment 2 is that, in this embodiment, in order to facilitate separate liquid supply using a set of backwash filters, a first tee connector 6 is provided on the liquid supply hose 3, and a branch pipe connector 11 and a second tee connector 12 are provided on the liquid supply branch pipe 10.

[0031] Example 4

[0032] This embodiment provides a hydraulic support with a hinge shaft anti-rust mechanism. The main difference from embodiment 3 is that, in this embodiment, in order to facilitate the storage of emulsion, the inner diameter of the hinge shaft sleeve 9 is larger than the diameter of the hinge shaft.

[0033] To improve structural stability, a first hinged arm is used to stably support a second hinged arm. This includes a pair of first hinged arms, where the width of the support base is greater than the width of the first hinged arm, and the width of the second hinged arm is greater than the width of the first hinged arm. That is, the pair of first hinged arms are arranged side-by-side along the width direction of the second hinged arm.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A hydraulic support with a hinge shaft anti-rust mechanism, characterized in that: The support base and a plurality of articulated arms arranged on the support base; A hinge shaft anti-rust mechanism is arranged at the hinge between the support base and the articulated arm, and at the hinge between two adjacent articulated arms; The hinge shaft anti-rust mechanism comprises a hinge shaft sleeve and a liquid supply pipeline, the hinge shaft sleeve is fixed at both ends of the articulated arm, the hinge shaft sleeve is externally connected with a backwashing filter through the liquid supply pipeline, the hinge shaft sleeve is used for storing emulsion discharged by the backwashing filter and lubricating the hinge shaft installed in the hinge shaft sleeve.

2. The hydraulic support with the anti-rust mechanism of the hinged shaft according to claim 1, characterized in that: The liquid supply pipeline comprises a liquid supply hose and a liquid supply branch pipe, a part of the hinge shaft sleeves are directly connected with the backwashing filter through the liquid supply hose, and the other part of the hinge shaft sleeves are connected with the liquid supply hose through the liquid supply branch pipe in groups of two.

3. The hydraulic support with the anti-rust mechanism of the hinged shaft according to claim 2, characterized in that: A first three-way joint is arranged on the liquid supply hose, and a branch pipe joint and a second three-way joint are arranged on the liquid supply branch pipe.

4. The hydraulic support with anti-rust mechanism of hinged shaft according to claim 1 or 2 or 3, characterized in that: The plurality of articulated arms comprises a first articulated arm, a second articulated arm, a third articulated arm and a fourth articulated arm; The lower end of the fourth articulated arm is hingedly connected with the support base, the upper end of the fourth articulated arm is hingedly connected with the lower end of the second articulated arm, and the upper end of the second articulated arm is hingedly connected with one end of the third articulated arm. The upper end of the first articulated arm is hingedly connected with the middle part of the second articulated arm, and the lower end of the second articulated arm is hingedly connected with the top of the support base.

5. The hydraulic support with anti-rust mechanism of hinged shaft according to claim 1, characterized in that: The inner cavity diameter of the hinge shaft sleeve is greater than the diameter of the hinge shaft.

6. The hydraulic support with the anti-rust mechanism of the hinged shaft according to claim 4, characterized in that: The support base comprises a pair of the first articulated arms, the width of the support base is greater than the width of the first articulated arm, and the width of the second articulated arm is greater than the width of the first articulated arm.

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