Bidirectional lock

Abstract

The utility model belongs to the technical field of hydraulic locks, and particularly relates to a two-way lock which comprises a valve shell provided with a liquid inlet pipeline and a liquid return pipeline in parallel, a valve groove communicated with the liquid inlet pipeline and the liquid return pipeline is formed in the valve shell in a penetrating mode, and the two ends of the valve groove are each sequentially provided with a plug, a reset spring and a valve body from outside to inside. A double-end cone is movably arranged between the two valve bodies, the ends, away from each other, of the two valve bodies are each provided with a measuring rod movably penetrating and extending to the outside of the plug, and the ends, away from the valve bodies, of the measuring rods are provided with second scale marks used for length measurement in the axial direction. According to the utility model, the measuring rod movably penetrating through the plug is additionally arranged, so that when equipment is in a static state, the position of the valve body can be determined through the measuring rod and the second scale mark, and whether the reset spring is damaged or not can be conveniently judged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of hydraulic lock, and particularly relates to a bidirectional lock. BACKGROUND

[0002] The bidirectional lock is one kind of hydraulic lock, and the bidirectional lock is composed of two hydraulic control check valves, and the principle is that the two hydraulic control check valves take the pressure of the oil way of the other party as the pilot oil, and when one party pipeline has no pressure, the other party is closed at the same time.

[0003] The valve body in the existing bidirectional lock is generally reset in position through the elastic force of the spring, and when there is no pressure in the pipeline, the spring makes the valve body seal the pipeline, when the spring is damaged, the valve body cannot be reset to the predetermined position, and the pipeline cannot be fully closed, so that the support position of the hydraulic cylinder cannot be locked, and during the process of supporting the load, the load cannot be maintained, so that the equipment cannot provide stable support for the load, and the load may be overturned. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a bidirectional lock to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a bidirectional lock, comprising: valve housing with liquid inlet pipeline and liquid return pipeline arranged side by side, the valve housing is provided with valve groove communicating with the liquid inlet pipeline and the liquid return pipeline, the two ends of the valve groove are sequentially provided with plug, reset spring and valve body from outside to inside, double-head cone is movably arranged between the two valve bodies, the end of the two valve bodies away from each other is provided with movable measuring rod extending to the outside of the plug, and the end of the measuring rod away from the valve body is provided with second scale line for length measurement along the axial direction.

[0006] Preferably, the outside of the plug is further provided with protection cylinder for protecting the measuring rod, the protection cylinder is a hollow structure, and one end of the measuring rod movably extends to the inside of the protection cylinder.

[0007] Preferably, the outer wall of the protection cylinder is provided with partially transparent area along the axial direction, the measuring rod is arranged on the inner side of the transparent area, and the outer side of the transparent area is provided with first scale line along the axial direction.

[0008] Preferably, the outer end of the plug is further welded with external thread seat, one end of the protection cylinder is screwed on the external thread seat, and one end of the measuring rod movably penetrates the external thread seat.

[0009] Preferably, the inner side of the plug is further provided with a spring support plate for adjusting the compression length of the return spring, one end of the plug is provided with a groove for accommodating the spring support plate, one end of the return spring abuts against the spring support plate, the measuring rod is provided with a threaded segment, and the threaded segment is screwed through the spring support plate, and one end of the measuring rod is rotatably installed on the valve body.

[0010] Preferably, the groove is further provided with at least one positioning rib for guiding the spring support plate, the positioning rib is arranged on the inner wall of the groove in the axial direction of the measuring rod, and the edge position of the spring support plate is provided with a positioning groove for accommodating the positioning rib.

[0011] Preferably, the one end of the measuring rod away from the valve body is further provided with a one-slot groove for facilitating rotation, and the width of the one-slot groove is greater than the thickness of a one-yuan coin.

[0012] Preferably, the outer side of the one end of the valve body close to the plug is further provided with a plurality of sealing grooves in sequence, each of the sealing grooves is provided with a sealing ring abutting against the inner wall of the valve groove, and the plurality of sealing rings are arranged on the side of the liquid inlet pipeline or the liquid return pipeline close to the plug.

[0013] Preferably, the end of the plug is further provided with a plug-in part inserted into the valve groove, the plug-in part is provided with a sealing gasket, and the sealing gasket is clamped and installed between the plug and the valve shell.

[0014] Preferably, the outer side of the plug is provided with a plurality of fixing bolts arranged in an annular array, and one end of each of the fixing bolts extends into the valve shell.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) The utility model discloses a measuring rod of movable through plug, when the equipment is in static state, the position of the valve body can be determined through the measuring rod and the second scale line, and whether the return spring is damaged can be determined conveniently.

[0017] (2) The utility model discloses a protection cylinder, the measuring rod in the telescopic state is protected through the protection cylinder, external objects are prevented from contacting the measuring rod, and the valve body is prevented from being stuck in the valve groove.

[0018] (3) The utility model discloses a transparent area and a first scale line, so that the length of the measuring rod can be determined outside the protection cylinder, and the position of the measuring rod in the protection cylinder can be viewed in real time.

[0019] (4) The utility model discloses a threaded segment and a spring support plate, when the return spring is damaged, the measuring rod is rotated, the spring support plate is moved to one side of the valve body, the valve body is moved to the predetermined position through the return spring, temporary repair is carried out when the valve body cannot block the pipeline, and load overturning is avoided. Attached Figure Description

[0020] Figure 1 This is a front view of the present invention;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a front view of the plug, connector, spring support plate, and measuring rod of this utility model;

[0023] Figure 4 This is a front view of the measuring rod and valve body of this utility model;

[0024] Figure 5 This is a perspective view of the spring support plate and measuring rod of this utility model;

[0025] In the diagram: 1. Valve housing; 2. Sealing gasket; 3. Plug; 4. Fixing bolt; 5. Measuring rod; 6. Protective sleeve; 7. Transparent area; 8. First graduation line; 9. Slotted groove; 10. Second graduation line; 11. External threaded seat; 12. Spring support plate; 13. Positioning rib; 14. Groove; 15. Sealing groove; 16. Sealing ring; 17. Valve body; 18. Valve groove; 19. Double-headed cone; 20. Insertion part; 21. Inlet pipe; 22. Return pipe; 23. Return spring; 24. Positioning groove; 25. Threaded section. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] refer to Figures 1-2 and Figure 5 As shown, the present invention provides a two-way lock, comprising: a valve housing 1 having an inlet pipe 21 and a return pipe 22 arranged side by side; a valve groove 18 connecting the inlet pipe 21 and the return pipe 22 is provided through the valve housing 1; both ends of the valve groove 18 are provided with a plug 3, a return spring 23 and a valve body 17 from the outside to the inside; a double-headed cone 19 is movably provided between the two valve bodies 17; a measuring rod 5 is provided at the opposite end of the two valve bodies 17, extending movably through the plug 3; and a second scale line 10 for length measurement is provided at the opposite end of the measuring rod 5 along the axial direction.

[0028] Combination Figures 1-2As shown, the outer part of the plug 3 is provided with a plurality of fixing bolts 4 in an annular array, one end of the plurality of fixing bolts 4 extending into the valve shell 1.

[0029] In the above, when the reset spring 23 loses elasticity, the valve body 17 cannot fully block the liquid inlet pipeline 21 or the liquid return pipeline 22, at this time, the stroke of the reset spring 23 is shortened, thereby driving the measuring rod 5 to be pushed out, and the length of the measuring rod 5 being pushed out can be measured through the second scale line 10, and when the length being pushed out is greater than a threshold value, the valve body 17 cannot fully block the pipeline.

[0030] Further, in order to avoid the liquid in the pipeline from overflowing through the measuring rod 5, referring to Figure 2 As shown, the outer side of the valve body 17 close to one end of the plug 3 is further provided with a plurality of sealing grooves 15, each sealing groove 15 is provided with a sealing ring 16 abutting on the inner wall of the valve groove 18, and the plurality of sealing rings 16 are arranged on the side of the liquid inlet pipeline 21 or the liquid return pipeline 22 close to the plug 3. The plurality of sealing rings 16 avoid the liquid in the pipeline from entering the gap between the valve body 17 and the plug 3.

[0031] Further, in order to improve the sealing effect between the plug 3 and the valve shell 1, referring to Figures 1-2 As shown, the end of the plug 3 is further provided with a plug-in part 20 inserted into the valve groove 18, the plug-in part 20 is sleeved with a sealing gasket 2, and the sealing gasket 2 is clamped and installed between the plug 3 and the valve shell 1. After the plurality of fixing bolts 4 of the plug 3 are installed on the valve shell 1, the sealing gasket 2 plays a sealing effect between the plug 3 and the valve shell 1.

[0032] In the utility model, in combination with Figures 1-2 As shown, the outer part of the plug 3 is further provided with a protection cylinder 6 for protecting the measuring rod 5, the protection cylinder 6 is a hollow structure, and one end of the measuring rod 5 movably extends into the interior of the protection cylinder 6.

[0033] In combination with Figure 2 As shown, the outer end of the plug 3 is further welded with an external thread seat 11, one end of the protection cylinder 6 is screwed on the external thread seat 11, and one end of the measuring rod 5 movably penetrates the external thread seat 11.

[0034] In the above, the protection cylinder 6 is detachably installed on the plug 3 through the external thread seat 11, and after the protection cylinder 6 is removed, the measuring rod 5 can be operated, and when the valve body 17 moves in the valve groove 18, the measuring rod 5 synchronously extends and retracts in the protection cylinder 6, avoiding the interference of the measuring rod 5 to the movement of the valve body 17.

[0035] Further, in order to facilitate checking the position of the measuring rod 5 without removing the protection cylinder 6, referring toFigure 1 As shown, the outer wall of the protection cylinder 6 is provided with a partially transparent area 7 in the axial direction, the measuring rod 5 is arranged inside the transparent area 7, and the outer side of the transparent area 7 is provided with a first scale line 8 in the axial direction. The position of the measuring rod 5 in the protection cylinder 6 can be viewed through the transparent area 7, and the transparent area 7 can be transparent glass, transparent acrylic plate or other transparent materials. The position of the measuring rod 5 in the protection cylinder 6 can be accurately positioned through the first scale line 8.

[0036] In the utility model, in combination with Figures 2-3 and Figure 5 As shown, the inner side of the plug 3 of the embodiment is further provided with a spring support plate 12 for adjusting the compression length of the reset spring 23, one end of the plug 3 is provided with a groove 14 for accommodating the spring support plate 12, one end of the reset spring 23 abuts on the spring support plate 12, and the measuring rod 5 is provided with a threaded section 25, and the threaded section 25 is screwed through the spring support plate 12, and one end of the measuring rod 5 is rotatably installed on the valve body 17.

[0037] As described above, the spring support plate 12 provided by the utility model is used, the spring support plate 12 provides an installation position for the reset spring 23 on the measuring rod 5, when the measuring rod 5 is rotated, the spring support plate 12 can be moved to one side of the valve body 17 through the threaded section 25, thereby driving the valve seat to move away from one side of the plug 3, and further driving the valve body 17 to fully block the pipeline.

[0038] Further, in order to avoid the spring support plate 12 from rotating in the groove 14 along with the rotation of the measuring rod 5, referring to Figures 2-3 and Figure 5 As shown, at least one positioning rib 13 for guiding the spring support plate 12 is further arranged in the groove 14, the positioning rib 13 is arranged on the inner wall of the groove 14 in the axial direction of the measuring rod 5, and the edge position of the spring support plate 12 is provided with a positioning groove 24 for accommodating the positioning rib 13. The spring support plate 12 can only move along the length direction of the measuring rod 5 in the groove 14 through the positioning rib 13 and the positioning groove 24, so that the spring support plate 12 cannot rotate along with the rotation of the measuring rod 5, which facilitates the movement of the spring support plate 12 to one side of the valve body 17, thereby shortening the distance between the spring support plate 12 and the valve body 17.

[0039] Further, in order to facilitate the rotation of the measuring rod 5, referring to Figure 2 and Figures 4-5 As shown, one end of the measuring rod 5 away from the valve body 17 is further provided with a slot 9 for facilitating rotation, and the width of the slot 9 is greater than the thickness of a one-yuan coin. When the measuring rod 5 needs to be rotated, an object with a thickness consistent with that of a one-yuan coin can be found and inserted into the slot 9, and at this time, the one-yuan coin can be rotated to drive the measuring rod 5 to rotate.

[0040] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bidirectional lock characterized by, The utility model provides a valve shell (1) which is provided with liquid inlet pipeline (21) and liquid return pipeline (22) side by side, the valve shell (1) is provided with valve groove (18) which communicates liquid inlet pipeline (21) and liquid return pipeline (22) and is penetrated, the both ends of valve groove (18) are provided with plug (3), reset spring (23) and valve body (17) from outside to inside in proper order, double -end cone (19) is movably arranged between two valve body (17), the one end of two valve body (17) away from each other is provided with movable and penetrates and extends to the outside of plug (3) measuring rod (5), the one end of measuring rod (5) away from valve body (17) is provided with second scale line (10) for length measurement along the axial direction. The outside of plug (3) is further provided with protection cylinder (6) for protecting measuring rod (5), the protection cylinder (6) is hollow structure, one end of measuring rod (5) movably extends to the inside of protection cylinder (6).

2. A bidirectional lock according to claim 1, characterized in that: The outer wall of protection cylinder (6) is provided with partially transparent area (7) along the axial direction, measuring rod (5) is arranged on the inside of transparent area (7), the outside of transparent area (7) is provided with first scale line (8) along the axial direction.

3. A bidirectional lock according to claim 2, characterized in that: The outer end of plug (3) is further welded with external thread seat (11), one end of protection cylinder (6) is screwed on external thread seat (11), one end of measuring rod (5) movably penetrates external thread seat (11).

4. A bidirectional lock as defined in claim 2, wherein: The inside of plug (3) is further provided with spring support plate (12) for adjusting the compression length of reset spring (23), one end of plug (3) is provided with recess (14) for accommodating spring support plate (12), one end of reset spring (23) abuts on spring support plate (12), measuring rod (5) is provided with partial thread segment (25), and thread segment (25) is screwed on spring support plate (12) penetratingly, one end of measuring rod (5) is rotatably installed on valve body (17).

5. The bidirectional lock of claim 1, wherein: At least one positioning rib (13) for guiding spring support plate (12) is further arranged in recess (14), the positioning rib (13) is arranged on the inner wall of recess (14) along the axial direction of measuring rod (5), and a positioning groove (24) for accommodating the positioning rib (13) is arranged in the edge position of the spring support plate (12).

6. A bidirectional lock according to claim 5, wherein: One end of measuring rod (5) away from valve body (17) is further provided with a T-shaped slot (9) for facilitating rotation, and the width of the T-shaped slot (9) is greater than the thickness of a one-yuan coin.

7. The bidirectional lock of claim 1, wherein: The outer side of valve body (17) close to one end of plug (3) is further provided with a plurality of sealing grooves (15) in sequence, each sealing groove (15) is provided with a sealing ring (16) abutting on the inner wall of the valve groove (18), and the plurality of sealing rings (16) are arranged on the side of the liquid inlet pipeline (21) or the liquid return pipeline (22) close to the plug (3).

8. The bidirectional lock of claim 1, wherein: The end of plug (3) is further provided with a plug-in portion (20) inserted into the valve groove (18), a sealing gasket (2) is sleeved on the plug-in portion (20), and the sealing gasket (2) is clamped and installed between the plug (3) and the valve shell (1).

9. The bidirectional lock of claim 1, wherein: ​ 10. The bidirectional lock of claim 1, wherein: The outer part of the plug (3) is provided with a plurality of fixing bolts (4) in annular array, one end of each of the fixing bolts (4) extending into the valve housing (1).

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