Hydraulic locking device with gas circuit on-off function, cab suspension system and vehicle

Abstract

The utility model discloses a hydraulic locking device with a gas circuit on-off function, a cab suspension system and a vehicle, which comprise a hydraulic locking body and a mechanical two-position two-way valve arranged on one side of the hydraulic locking body, and an oil cylinder assembly is arranged on the hydraulic locking body close to one side of the mechanical two-position two-way valve. A driving locking assembly is arranged on the hydraulic locking body above the oil cylinder assembly, and a driven locking assembly is arranged on the hydraulic locking body on the side, away from the mechanical two-position two-way valve, of the driving locking assembly. The driving locking assembly is arranged in the mode that the oil cylinder assembly is used for jacking upwards to drive the driving locking assembly to rotate so as to close a gas circuit of the mechanical two-position two-way valve, and otherwise, the gas circuit is opened. The driven locking assembly is arranged in the mode that when the gas circuit is closed, the driven locking assembly is in an open state, and otherwise, the driven locking assembly is in a locked state. According to the utility model, the phenomenon of frequent nodding in the overturning process of the cab is eliminated, and the overturning operation stability and safety of the cab are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to commercial vehicle cab suspension system technical field, concretely relates to a hydraulic locking device with gas circuit on-off function, cab suspension system and vehicle. BACKGROUND

[0002] At present, the function of rear suspension hydraulic lock body is relatively single, generally only provides the turnover unlocking and back falling locking function of cab, in some vehicle models, especially in four-point full-floating air spring suspension system, the phenomenon of nodding of cab in the turnover process exists due to the different arrangement of gravity, in order to improve the operation stability in the turnover process of cab and prevent the generation of nodding phenomenon of cab, the gas source of front suspension system needs to be cut off after the unlocking of rear suspension, in order to realize the gas circuit cutting function, a mechanical two-position two-way valve is often arranged to realize the function of gas circuit cutoff.

[0003] At present, in the rear suspension hydraulic lock body of a vehicle model of commercial vehicle, for example, the structure introduced in the utility model patent CN116587938A, a mechanical two-position two-way valve is arranged on the side plate in the right rear suspension hydraulic lock body assembly through a valve body support, the valve body top rod is transversely arranged in the hydraulic lock body assembly, when the hydraulic lock body assembly is unlocked, the driven lock hook is rebounded under the restoring force of torsional spring and acts on the valve body top rod, a certain load is applied to the valve body top rod and it is pressed down, at this time, the mechanical two-position two-way valve closes the gas circuit and cuts off the gas circuit of front suspension air bag, in the turnover process, the nodding phenomenon of front suspension air bag caused by cyclic inflation and deflation is avoided, the smoothness and safety of cab lifting process are improved, this structure mainly relies on the restoring force of torsional spring in the hydraulic lock body assembly to apply to the driven lock hook, the driven lock hook overcomes the friction of rotary pair to rotate, finally the load is applied to the top rod of mechanical two-position two-way valve and it is pressed down to cut off the gas circuit. The structure needs the torsional spring and driven lock hook in the hydraulic lock body and other mechanisms to have high reliability, with the growth of use cycle, the restoring force of torsional spring cannot have any attenuation, the rotation of driven lock hook cannot have any jamming, and the valve body mounting support cannot have any deformation, in order to ensure the reliability of gas circuit on-off function, this structure cannot be effective for a long time, the customer needs to maintain the structure irregularly, therefore, the long-term effectiveness of gas circuit cutoff function of the structure has certain risk.

[0004] Under this background, the utility model provides a hydraulic locking device with gas circuit on-off function, cab suspension system and vehicle. UTILITY MODEL CONTENTS

[0005] In order to avoid the occurrence of the above-mentioned adverse failure, the utility model provides a hydraulic locking device with gas path on-off function, cab suspension system and vehicle. The utility model discloses cancel the original design through torsional spring restoring force action on driven lock hook and give mechanical valve top rod load action, adopt the force of oil cylinder to push the piston rod upward movement, through the crank connecting rod mechanism formed by the initiative lock hook and the pressure block to realize the pressure of the top rod of mechanical two-position two-way valve, thereby realize the opening and cut-off function of gas path.

[0006] In order to solve the above technical problems, the utility model realizes through the following technical scheme:

[0007] A hydraulic locking device with gas path on-off function, the hydraulic locking device includes hydraulic locking body and the mechanical two-position two-way valve of setting in the hydraulic locking body one side, is close to the mechanical two-position two-way valve one side of the hydraulic locking body on the oil cylinder assembly of setting, the hydraulic locking body on the oil cylinder assembly top is provided with initiative lock assembly, is provided with driven lock assembly on the hydraulic locking body on the initiative lock assembly side away from the mechanical two-position two-way valve, the initiative lock assembly is set as: the oil cylinder assembly is used for driving the initiative lock assembly rotation and thereby closes the gas path of the mechanical two-position two-way valve to the top, vice versa opens the gas path, the driven lock assembly is set as: when the gas path is closed, the driven lock assembly is in the open state, vice versa the driven lock assembly is in the locking state.

[0008] As a further optimization scheme of the utility model, the hydraulic locking body includes the upper pressure plate and the lower pressure plate of opposite setting, the mechanical two-position two-way valve is set in the same side of the upper pressure plate and the lower pressure plate, the initiative lock assembly and the driven lock assembly are all set between the upper pressure plate and the lower pressure plate.

[0009] As a further optimization scheme of the utility model, the initiative lock assembly includes the initiative lock hook of rotation connection on the hydraulic locking body and the first torsional spring for the initiative lock hook reset, the initiative lock hook one end is used for with the driven lock hook of the driven lock assembly forms the meshing relationship, the other end with the output end of the top of the oil cylinder assembly is resisted and rotationally connected with the pressure block, the pressure block is opened in the limiting slot hole, the limiting slot hole is worn with the limiting pin shaft fixed on the hydraulic locking body.

[0010] As a further optimization scheme of the utility model, the driven lock assembly includes the driven lock hook of rotation connection on the hydraulic locking body and the second torsional spring for the driven lock hook reset, the driven lock hook one end is used for with the initiative lock hook of the initiative lock assembly forms the meshing relationship, the other end is used for realizing the unlocking and locking of hydraulic lock body.

[0011] As a further optimization scheme of the utility model, the oil cylinder assembly includes a cylinder, a piston rod and a guide sleeve for guiding the piston rod, and the bottom of the cylinder is provided with an oil pipe joint.

[0012] As a further optimization scheme of the utility model, the mechanical two-position two-way valve is provided with a dust cover, and the dust cover is fixed on the hydraulic locking body.

[0013] As a further optimization scheme of the utility model, the hydraulic locking body is provided with a locking sensor for monitoring the state of the driven locking assembly.

[0014] As a further optimization scheme of the utility model, the hydraulic locking body is provided with a locking sensor for monitoring the state of the driven locking assembly.

[0015] A cab suspension system comprising the hydraulic locking device with the air path on-off function.

[0016] A vehicle comprising the hydraulic locking device with the air path on-off function or the cab suspension system.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] The utility model discloses a crank connecting rod mechanism is realized through initiative lock hook and briquetting, when the hydraulic lock body is unlocked, the piston rod in the oil cylinder assembly moves up under the action of hydraulic oil and pushes initiative lock hook and drives briquetting to rotate around the pin shaft and realizes the pressure of downward, thereby realizing the pressure of downward to the piston rod of mechanical two-position two-way valve, when the piston rod reaches the pressure and moves down to the cutoff position, the front suspension gas supply air path is closed, when the cab is locked, the piston rod in the oil cylinder loses the pressure effect of hydraulic oil, unloads and falls to the original position, initiative lock hook drives briquetting and separates the pressure to the piston rod, and the piston rod of mechanical two-position two-way valve restores the original position under the action of reset spring, and the front suspension gas supply air path is opened and recovers the gas supply. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic view of the hydraulic locking device with the air path on-off function.

[0020] Figure 2The utility model discloses an internal state structure schematic diagram when the gas circuit is opened.

[0021] Figure 3 The utility model discloses an internal state structure schematic diagram when the gas circuit is closed.

[0022] The utility model discloses a hydraulic lock body, 11 is the upper pressing plate, 12 is the lower pressing plate, 13 is the rivet, 2 is mechanical two position two way valve, 21 is the valve body, 22 is the gas pipe joint, 23 is the jacking rod, 24 is the bolt, 3 is the initiative lock assembly, 31 is initiative lock hook, 32 is the first torsional spring, 33 is the pressing block, 34 is the limit slot, 35 is the limit pin shaft, 4 is the driven lock assembly, 41 is driven lock hook, 42 is the second torsional spring, 5 is the oil cylinder assembly, 51 is the cylinder barrel, 52 is the piston rod, 53 is the guide sleeve, 54 is the oil pipe joint, 6 is the dust cover, 7 is the lock sensor. DETAILED DESCRIPTION

[0023] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that the drawings are only for illustrative description, and cannot be understood as the limitation of the patent; in order to better illustrate the embodiment, some components of the drawings will be omitted, enlarged or reduced, and the size of the actual product is not represented; for those skilled in the art, it is understandable that some well-known structures and their description in the drawings can be omitted. The positional relationship described in the drawings is only for illustrative description, and cannot be understood as the limitation of the patent.

[0024] Reference Figure 1 It is a kind of hydraulic lock device with gas circuit on-off function, the device is arranged in the left rear suspension system of commercial vehicle cab, when cab is lifted, hydraulic oil pushes the piston rod in the hydraulic lock small oil cylinder to move upwards, pushes initiative lock hook to move upwards, drives pressing block to rotate around limit pin shaft and moves downwards, and the end of pressing block will be down to the jacking rod of mechanical two position two way valve into a stroke, when the jacking rod in valve body reaches the gas circuit closing stroke, gas circuit is cut off, at this time, the gas source of cab front suspension system is cut off, left and right air bags have no gas source input, and the phenomenon of high and low is not generated due to the inflation and deflation of height valve, avoid the occurrence of frequent nodding problem of cab.

[0025] The embodiment of the present application provides a hydraulic locking device with air path on-off function, which comprises a hydraulic locking body 1, a mechanical two-position two-way valve 2, a driving locking assembly 3, a driven locking assembly 4, an oil cylinder assembly 5, a dust cover 6 and a locking sensor 7. The hydraulic locking body 1 comprises oppositely arranged upper and lower pressing plates 11 and 12, and the driving locking assembly 3, the driven locking assembly 4 and the locking sensor 7 are riveted and assembled in the upper and lower pressing plates 12 by rivets 13. The mechanical two-position two-way valve 2 is arranged on the same side of the upper and lower pressing plates 11 and 12.

[0026] The mechanical two-position two-way valve 2 comprises a valve body 21, an air pipe joint 22, a top rod 23 which can move up and down and a reset spring. The valve body 21 is vertically arranged. The top rod 23 is arranged in such a way that when the top rod 23 is moved to the cut-off stroke by the driving locking assembly 3, the air path is closed, and when the top rod 23 is reset under the action of the reset spring, the air path is opened.

[0027] In some examples, the dust cover 6 is arranged on the mechanical two-position two-way valve 2. The mechanical two-position two-way valve 2 and the dust cover 6 are fixed on the side surface of the hydraulic locking body 1 by bolts 24. The dust cover 6 protects the mechanical two-position two-way valve 2 in the interior, avoiding dust and other pollutants from affecting the movement of the top rod 23.

[0028] The oil cylinder assembly 5 is arranged on the hydraulic locking body 1 near the side of the mechanical two-position two-way valve 2. The oil cylinder assembly 5 comprises a cylinder barrel 51, a piston rod 52 and a guide sleeve 53 for guiding the piston rod 52. The cylinder barrel 51 is provided with an oil pipe joint 54 at the bottom.

[0029] The driving locking assembly 3 is arranged in such a way that the oil cylinder assembly 5 is used to drive the driving locking assembly 3 to rotate upwards so as to close the air path of the mechanical two-position two-way valve 2, and vice versa.

[0030] In some examples, the driving locking assembly 3 is arranged on the hydraulic locking body 1 above the oil cylinder assembly 5. The driving locking assembly 3 comprises a driving hook 31 which is rotationally connected to the hydraulic locking body 1 by the rivet 13 and a first torsional spring 32 which is used for resetting the driving hook 31. One end of the driving hook 31 is used to form a meshing relationship with a driven hook 41 of the driven locking assembly 4, and the other end is abutted with the piston rod 52 at the top of the oil cylinder assembly 5 and rotationally connected with a pressing block 33 through a pin shaft. The pressing block 33 is provided with a limiting slot hole 34, and a limiting pin shaft 35 which is fixed to the hydraulic locking body 1 is arranged in the limiting slot hole 34.

[0031] The driven locking assembly 4 is arranged in such a way that when the air path is closed, the driven locking assembly 4 is in an open state, and vice versa.

[0032] In some examples, the driven locking assembly 4 is arranged on the hydraulic locking body 1 on the side away from the mechanical two-position two-way valve 2 of the driving locking assembly 3. The driven locking assembly 4 comprises a driven locking hook 41 rotatably connected to the hydraulic locking body 1 by a rivet 13 and a second torsion spring 42 for resetting the driven locking hook 41, one end of the driven locking hook 41 is used to form an engagement relationship with the driving locking hook 31 of the driving locking assembly 3, and the other end is used to realize the unlocking and locking of the hydraulic lock body.

[0033] The driving locking hook 31 and the driven locking hook 41 are in a hinged relationship with the rivet 13, and the opening and closing actions of the driven locking hook 41 are realized by rotation within a certain rotation angle range. The pressing block 33 is hinged to the driving locking hook 31 by a pin shaft and realizes the up-down swinging action by a limiting pin shaft 35.

[0034] In some examples, the hydraulic locking body 1 is provided with a locking sensor 7 for monitoring the state of the driven locking assembly 4.

[0035] Referring to Figure 2 , the hydraulic lock is in a locked state, and at this time, the cab is in a locked state, and during driving, the cab rear end plays a role in connecting protection. At this time, the oil cylinder assembly 5 is free of hydraulic oil and is in a pressure relief state, the piston rod 52 in the cylinder barrel 51 is in a retracted position, the end pressure part of the pressing block 33 is in a disengaged non-contact state with the top rod 23 of the mechanical two-position two-way valve 2, at this time, the vehicle air source is input through the air pipe joint 22, the mechanical two-position two-way valve 2 is in a normal open state, and at the same time, the two-position two-way valve air outlet inputs compressed air to the cab front suspension system for use by the front suspension left and right air bags.

[0036] Referring to Figure 3 , the hydraulic lock is in an unlocked state, and at this time, the cab can perform a locking lifting action, the hydraulic oil in the vehicle lifting pump is delivered to the oil pipe joint 54 through the hydraulic oil pipeline, the hydraulic oil pushes the piston rod 52 in the oil cylinder assembly 5 to move upward, the piston rod 52 after extension pushes the tail of the driving locking hook 31 to move upward, the driving locking hook 31 rotates around the rivet 13, and the driving locking hook 31 and the driven locking hook 41 move relative to each other and pass through the engagement point, the driven locking hook 41 rotates around the rivet 13 under the rebounding force of the second torsion spring 42, at this time, the lock body is opened, and the cab can be turned over, and at the same time, the piston rod 52 after extension reaches the highest point, at this time, the pressing block 33 presses down the top rod 23 of the mechanical two-position two-way valve 2 under the action of the lever, and when the top rod 23 reaches the cut-off stroke, the air path is closed.

[0037] Based on a general inventive concept, the embodiments of the present application propose a cab suspension system comprising a hydraulic locking device with air path opening and closing functions.

[0038] Based on a general inventive concept, the embodiment of the present application proposes a vehicle comprising a hydraulic locking device with air path on-off function; or, comprising a cab suspension system.

[0039] By the hydraulic locking device with air path on-off function provided in the embodiment, at least the following technical effects or advantages are achieved:

[0040] 1. The vertically arranged mechanical two-position two-way valve can save the assembly arrangement space, improve the assembly appearance coordination, and avoid unnecessary bumps during the use of the assembly.

[0041] 2. The hydraulic locking device uses the oil cylinder piston rod inside the hydraulic locking device as the load execution element of the mechanical on-off valve, which is stable in performance, high in reliability, and maintenance-free, and does not worry about the functional failure caused by the torsional spring force decay or the movement of the driven lock hook.

[0042] 3. The dust cover is arranged outside the mechanical two-position two-way valve to prevent foreign matter impact and external environmental pollutants from adversely affecting the function of the two-position two-way valve.

[0043] According to the description and drawings of the present application, a person skilled in the art can easily manufacture or use the hydraulic locking device with air path on-off function, the cab suspension system and the vehicle, and can produce the positive effects described in the present application.

[0044] Unless otherwise specified and limited, in the present application, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. The orientation or positional relationship shown in the drawing is based on the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation. Therefore, the terms describing the orientation or positional relationship in the present application are used only for exemplary description, and cannot be understood as a limitation on the present patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the drawings and according to the specific circumstances.

[0045] Unless otherwise specified and limited, in the present application, if there are terms such as "setting", "connection" and "connection", they should be understood broadly, for example, they can be fixedly connected, or they can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium; can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] The above is only the preferred embodiment of the present application, and does not limit the present application in any form, and any simple modification or equivalent change of the above embodiment according to the technical essence of the present application falls within the protection scope of the present application.

Claims

1. A hydraulic locking device with air circuit on / off function, characterized in that, The hydraulic locking device comprises a hydraulic locking body (1) and a mechanical two-position two-way valve (2) arranged on one side of the hydraulic locking body (1), an oil cylinder assembly (5) is arranged on the hydraulic locking body (1) near one side of the mechanical two-position two-way valve (2), a driving locking assembly (3) is arranged on the hydraulic locking body (1) above the oil cylinder assembly (5), and a driven locking assembly (4) is arranged on the hydraulic locking body (1) away from the mechanical two-position two-way valve (2) of the driving locking assembly (3); the driving locking assembly (3) is arranged so that the oil cylinder assembly (5) is used for upwardly pushing to drive the driving locking assembly (3) to rotate, so as to close the air passage of the mechanical two-position two-way valve (2), and vice versa; the driven locking assembly (4) is arranged so that when the air passage is closed, the driven locking assembly (4) is in an open state, and vice versa, the driven locking assembly (4) is in a locked state.

2. The hydraulic lock apparatus with air passage opening and closing function according to claim 1, characterized by The hydraulic locking body (1) comprises oppositely arranged upper and lower pressing plates (11) and (12), the mechanical two-position two-way valve (2) is arranged on the same side of the upper and lower pressing plates (11) and (12), and the driving locking assembly (3) and the driven locking assembly (4) are arranged between the upper and lower pressing plates (11) and (12).

3. The hydraulic lock apparatus with air passage opening and closing function according to claim 1, characterized by The driving locking assembly (3) comprises a driving locking hook (31) rotationally connected to the hydraulic locking body (1) and a first torsional spring (32) used for resetting the driving locking hook (31), one end of the driving locking hook (31) is used for forming an engagement relationship with a driven locking hook (41) of the driven locking assembly (4), the other end is abutted with an output end of a top portion of the oil cylinder assembly (5) and rotationally connected with a pressing block (33), a limiting slot hole (34) is formed in the pressing block (33), and a limiting pin shaft (35) fixed to the hydraulic locking body (1) is arranged in the limiting slot hole (34).

4. The hydraulic lock apparatus with air passage opening and closing function according to claim 1, characterized by The driven locking assembly (4) comprises a driven locking hook (41) rotationally connected to the hydraulic locking body (1) and a second torsional spring (42) used for resetting the driven locking hook (41), one end of the driven locking hook (41) is used for forming an engagement relationship with the driving locking hook (31) of the driving locking assembly (3), and the other end is used for realizing unlocking and locking of the hydraulic lock body.

5. The hydraulic lock apparatus with air passage opening and closing function according to claim 1, characterized in that, The oil cylinder assembly (5) comprises a cylinder barrel (51), a piston rod (52) and a guide sleeve (53) used for guiding the piston rod (52), and an oil pipe joint (54) is arranged at the bottom of the cylinder barrel (51).

6. The hydraulic lock apparatus with air passage opening and closing function according to claim 1, characterized by The mechanical two-position two-way valve (2) comprises a valve body (21), an air pipe joint (22), a top rod (23) capable of moving up and down and a reset spring, the valve body (21) is vertically arranged, the top rod (23) is arranged so that when the top rod (23) is moved to a cut-off stroke by the driving locking assembly (3) and is pressed downward, the air passage is closed, and when the top rod (23) is reset under the action of the reset spring, the air passage is opened.

7. The hydraulic lock apparatus with air passage opening and closing function according to claim 1 or 6, characterized in that, The mechanical two-position two-way valve (2) is provided with a dust cover (6), and the dust cover (6) is fixed on the hydraulic locking body (1).

8. The hydraulic lock apparatus with air passage opening and closing function according to claim 1, characterized by The hydraulic locking body (1) is provided with a locking sensor (7) for monitoring the state of the driven locking assembly (4).

9. A cab suspension system characterized by, The hydraulic locking device with air path on-off function as claimed in any one of claims 1-8.

10. A vehicle characterized by comprising: The hydraulic locking device with air path on-off function as claimed in any one of claims 1-8; or, the cab suspension system as claimed in claim 9. The hydraulic locking device with air path on-off function as claimed in any one of claims 1-8; or, the cab suspension system as claimed in claim 9.

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