Locking cylinder with adjustable push rod fork

Abstract

The utility model relates to the field of locking cylinders, in particular to a locking cylinder with an adjustable push rod fork, which comprises a front cover, a cylinder body, a push rod disc assembly and a push rod fork assembly, the left end of the cylinder body is provided with an air inlet, the front cover is provided with an air outlet, the right end of the front cover is connected with a dustproof sleeve, and the front cover is connected with the outside of the cylinder body through a bolt. The push rod disc assembly comprises a piston, a push rod disc, a guide pipe and a spring, the piston is arranged in the cylinder body in a sliding mode, the push rod disc is arranged at the right end of the piston, the guide pipe is fixedly connected to the right end of the push rod disc, and the right end of the guide pipe is arranged in the front cover in a sliding mode; the push rod fork assembly comprises a push rod seat, a push rod, a connecting rod and a connecting fork, the push rod seat penetrates through the push rod disc, the push rod is connected to the right end of the push rod seat, the right end of the push rod extends out of the dustproof sleeve, the middle of the connecting rod is in threaded connection with the right end of the push rod, and the connecting fork is installed at the right end of the connecting rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of locking cylinder relates to a push rod fork adjustable locking cylinder. BACKGROUND

[0002] In the automobile steering system, the locking cylinder is a key component, which is usually installed on the follow-up bridge of a large trailer and bears the important responsibility of steering locking of the follow-up bridge. The existing locking cylinder has two major problems. On the one hand, the distance of the internal push rod fork is fixed and cannot be adjusted. During the actual installation of the vehicle, due to the differences in the structural design of different vehicle models, the requirements for the distance of the push rod fork of the locking cylinder are also different. This unadjustability results in the need to spend a lot of time and effort to adapt during installation, and even may affect the overall assembly progress of the vehicle, greatly reducing the installation convenience. On the other hand, the front cover and the cylinder body of the locking cylinder are connected by bolts at the connection, which is a rigid connection. Although rigid connection can provide a certain fastening effect, small gaps are easily produced on the connection surface. When the locking cylinder is working, the internal gas pressure is large, and these small gaps will become a channel for gas leakage, thereby affecting the air tightness of the locking cylinder. Poor air tightness will reduce the working efficiency of the locking cylinder and make it unable to accurately realize the steering locking function of the follow-up bridge, and in severe cases, may also affect the safety and stability of the vehicle during driving. SUMMARY

[0003] The utility model discloses a push rod fork adjustable locking cylinder to solve the problems of the prior art.

[0004] The utility model discloses a push rod fork adjustable locking cylinder to solve the problems of the prior art.

[0005] Further improvement, the left side of the front cover is equipped with the annular guide groove one of assembling dust cover, the left end and the right end of dust cover are equipped with annular guide groove two, install the clamp in annular guide groove two.

[0006] Further improvement, the combination sliding ring comprises a guide ring and a guide ring O-ring, the guide ring is provided with a groove outside the ring, the groove is arranged opposite to the connecting part between the front cover and the cylinder body, and the guide ring O-ring is arranged in the groove.

[0007] Further improvement, the push rod seat comprises a club part, a tapered ball part and a connecting part fixed to right in sequence, the middle part of the push rod disc is provided with a tapered hole, the right side of the piston is provided with a ball groove matched with the shape of the left end surface of the club part, the outside of the club part is sleeved with a buffer O-ring, the tapered ball part is matched and arranged in the tapered hole in a sliding mode, and a hole steel wire is clamped in the inner recess of the piston.

[0008] Further improvement, the push rod is internally provided with a channel, the left end part of the connecting rod is arranged without being in contact with the channel, a threaded sleeve is threadedly connected to the middle part of the connecting rod, the threaded sleeve is threadedly connected to the right end part of the push rod, the connecting fork is threadedly connected to the right end part of the connecting rod and arranged with the left end surface of the connecting fork in contact with the right end surface of the push rod, and the connecting fork is inserted into the inside of the right end part of the connecting rod through an elastic pin.

[0009] Further improvement, the left side of the piston is sleeved with a Y-shaped sealing ring, the outside of the Y-shaped sealing ring is arranged in contact with the inner wall of the cylinder body, a shaft steel wire is clamped in the outer recess of the piston, and the Y-shaped sealing ring is controlled to move synchronously with the piston through the shaft steel wire and the right end part of the piston.

[0010] Further improvement, the right side of the piston is provided with a spring rebound positioning ring, the left side of the spring rebound positioning ring abuts against the right end surface of the push rod disc, and the left side of the spring is sleeved with a left end protruding ring of the spring rebound positioning ring.

[0011] Further improvement, the right side of the piston is annularly and spacedly provided with protrusions, the left end surface of the push rod disc is annularly and spacedly provided with push grooves, and the protrusions are matched and arranged in the push grooves.

[0012] Further improvement, the air inlet is connected with an air inlet connector, and the air outlet is connected with an air outlet pipe.

[0013] Further improvement, the front cover and the cylinder body are externally connected with a support assembly.

[0014] Compared with the prior art, the push rod fork adjustable locking cylinder has the following beneficial effects:

[0015] The middle part of the connecting rod is threadedly connected with the right end of the push rod, the position of the connecting fork relative to the push rod can be changed by rotating the connecting rod, the overall length of the push rod fork assembly is adjusted, the diversified demand for distance during installation of different vehicles is met, and the installation convenience is improved; the combination sliding ring arranged at the connecting part between the front cover and the cylinder body can effectively fill the gap at the connecting part, the air tightness is enhanced, and the stable and efficient work of the locking cylinder is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure diagram of the utility model

[0017] Figure 2 Structure diagram of the utility model

[0018] Figure 3 Structure diagram of the utility model Figure 1

[0019] Figure 4 Structure diagram of the utility model Figure 2

[0020] Figure 5 Structure diagram of the utility model Figure 3

[0021] Figure 6 Structure diagram of the utility model

[0022] Figure 7 Structure diagram of the utility model

[0023] In the figure, 1 - front cover, 11 - air outlet, 12 - air outlet pipe, 13 - annular guide groove one, 2 - cylinder body, 21 - air inlet, 22 - air inlet joint, 3 - push rod disc assembly, 31 - piston, 311 - Y-shaped sealing ring, 312 - spring rebound positioning ring, 3121 - left end convex ring, 313 - shaft steel wire, 314 - hole steel wire, 315 - ball groove, 316 - convex, 32 - push rod disc, 321 - taper hole, 322 - push groove, 33 - guide pipe, 34 - spring, 4 - push rod fork assembly, 41 - push rod seat, 411 - ball rod part, 412 - tapered ball part, 413 - connecting part, 414 - buffer O-shaped ring, 42 - push rod, 421 - channel, 43 - connecting rod, 431 - threaded sleeve, 44 - connecting fork, 441 - elastic pin, 6 - combined slip ring, 61 - guide ring, 611 - groove, 62 - guide ring O-shaped ring, 7 - dustproof sleeve, 71 - annular guide groove two, 72 - clamp, 8 - support assembly. DETAILED DESCRIPTION

[0024] ​​​In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model; unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixed connection, or it can be detachable connection, etc. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] The utility model is further described below in combination with the embodiments and drawings. Figures 1-7 The technical scheme of the utility model is further described.

[0026] Embodiment 1

[0027] A push rod fork adjustable locking cylinder, comprising: front cover 1, cylinder body 2, push rod disc assembly 3 and push rod fork assembly 4, the left end of cylinder body 2 is equipped with air inlet 21, the front cover 1 is equipped with air outlet 11, the right end of front cover 1 is connected with dust cover 7, the inside of front cover 1 and cylinder body 2 is connected by bolt, and the inside connection of front cover 1 and cylinder body 2 is equipped with combined slip ring 6, push rod disc assembly 3 includes piston 31, push rod disc 32, conduit 33 and spring 34, piston 31 is slidably arranged in the inside of cylinder body 2, push rod disc 32 is arranged at the right end of piston 31, conduit 33 is fixedly connected to the right end of push rod disc 32, and the right end of conduit 33 is slidably arranged in the inside of front cover 1, spring 34 is sleeved on conduit 33 and located between piston 31 and front cover 1, push rod fork assembly 4 includes push rod seat 41, push rod 42, connecting rod 43 and connecting fork 44, push rod seat 41 passes through push rod disc 32 and is arranged, push rod 42 is connected to the right end of push rod seat 41, the right end of push rod 42 extends out of dust cover 7 and is arranged, the middle part of connecting rod 43 is screw-connected to the right end of push rod 42, and connecting fork 44 is installed at the right end of connecting rod 43.

[0028] As Figures 1-7 The utility model uses the principle as shown in the figure: the working principle is based on the cooperation of gas pressure drive and mechanical structure. When the outside gas enters into the cylinder body 2 through the air inlet 21, the gas pressure acts on the left side of the piston 31, pushes the piston 31 to slide right in the cylinder body 2, and the piston 31 drives the push rod disc 32 to move synchronously, and the push rod disc 32 drives the push rod 42 to stretch out right through the push rod seat 41. In this process, the spring 34 is compressed. When the air inlet 21 stops air intake, the air outlet 11 starts to exhaust, the spring 34 releases the elastic potential energy, pushes the piston 31 to reset left, and realizes the retraction of the push rod 42.

[0029] First, the adjustable function of the push rod fork assembly 4 is realized: the middle part of the connecting rod 43 is threadedly connected with the right end of the push rod 42, by rotating the connecting rod 43, the position of the connecting fork 44 relative to the push rod 42 can be changed, and then the overall length of the push rod fork assembly 4 is adjusted, the diversified demand for distance when installing different vehicles is met, and the installation convenience is improved.

[0030] Secondly, the combined slip ring 6 arranged at the internal connection between the front cover 1 and the cylinder body 2 can effectively fill the gap at the connection, enhance the air tightness, and ensure the stable and efficient work of the locking cylinder.

[0031] As a further preferred embodiment, the left side of the front cover 1 is provided with an annular guide groove one 13 for assembling the dustproof sleeve 7, the left end and the right end of the dustproof sleeve 7 are both provided with an annular guide groove two 71, and the annular guide groove two 71 is internally installed with a clamp 72.

[0032] The annular guide groove one 13 provides precise positioning for the installation of the dustproof sleeve 7, so that the installation is more convenient and stable. The clamp 72 is installed in the annular guide groove two 71 and can tightly clamp the dustproof sleeve 7 to prevent it from loosening and falling off, and can effectively block dust, impurities and the like from entering the inside of the locking cylinder.

[0033] As a further preferred embodiment, the combined slip ring 6 includes a guide ring 61 and a guide ring O-ring 62, the outer side of the guide ring 61 is provided with a groove 611, the groove 611 is arranged opposite to the internal connection between the front cover 1 and the cylinder body 2, and the guide ring O-ring 62 is arranged in the groove 611.

[0034] The guide ring 61 plays a supporting and guiding role, and the guide ring O-ring 62 utilizes its own elasticity to tightly fill the gap at the connection between the groove 611 and the front cover 1 and the cylinder body 2, effectively improves the air tightness at the connection between the front cover 1 and the cylinder body 2, reduces gas leakage, and ensures the stable pressure during the work of the locking cylinder.

[0035] As a further preferred embodiment, the push rod seat 41 includes a ball rod part 411, a tapered ball part 412 and a connecting part 413 fixed in sequence to the right, the middle part of the push rod disc 32 is provided with a tapered hole 321, the right side of the piston 31 is provided with a ball groove 315 matching the shape of the left end surface of the ball rod part 411, the ball rod part 411 is sleeved outside the buffer O-ring 414, the tapered ball part 412 is slidingly arranged in the tapered hole 321, the hole steel wire 314 is clamped in the inner recess of the piston 31, and the push rod disc 32 and the piston 31 are controlled to move synchronously through the hole steel wire 314.

[0036] The ball rod part 411 cooperates with the ball groove 315, and when the piston 31 moves to the right end limit position, the piston 31 is still closely attached to the left end surface of the push rod seat 41, and the push rod fork assembly 4 cannot move axially again; the buffer O-ring 414 plays a buffering role, reducing the impact between components. The conical ball part 412 cooperates with the conical hole 321 to transmit the thrust, and the steel wire 314 ensures that the push rod disc 32 and the piston 31 move synchronously, effectively transmitting power.

[0037] As a further preferred embodiment, the push rod 42 is internally provided with a channel 421, the left end of the connecting rod 43 is not in contact with the channel 421, the middle of the connecting rod 43 is threadedly connected with a threaded sleeve 431, the threaded sleeve 431 is threadedly connected to the right end of the push rod 42, the connecting fork 44 is threadedly connected to the right end of the connecting rod 43, and the left end surface of the connecting fork 44 is in contact with the right end surface of the push rod 42, and the elastic pin 441 is inserted into the inside of the right end of the connecting rod 43.

[0038] The channel 421 provides a connecting rod 43 adjustment space, the threaded sleeve 431 enhances the threaded connection strength, the connecting fork 44 and the connecting rod 43 are threadedly connected to realize length adjustment, and the elastic pin 441 prevents the connecting fork 44 from loosening. The effect is to improve the connection stability, facilitate the adjustment of the length of the push rod fork assembly 4, and meet different installation requirements.

[0039] As a further preferred embodiment, the left side of the piston 31 is provided with a Y-shaped sealing ring 311, the outer side of the Y-shaped sealing ring 311 is in contact with the inner wall of the cylinder body 2, the shaft steel wire 313 is inserted into the outer groove of the piston 31, and the Y-shaped sealing ring 311 moves synchronously with the piston 31 through the shaft steel wire 313 and the right end of the piston 31.

[0040] The Y-shaped sealing ring 311 utilizes its special shape to closely fit the inner wall of the cylinder body 2 under the action of gas pressure, achieving good sealing, and the shaft steel wire 313 ensures that the Y-shaped sealing ring 311 moves synchronously with the piston 31, effectively preventing the gas in the cylinder body 2 from leaking from the gap between the piston 31 and the inner wall of the cylinder body 2, and ensuring the stability of the internal pressure of the locking cylinder.

[0041] As a further preferred embodiment, the right side of the piston 31 is provided with a spring rebound positioning ring 312, the left side of the spring rebound positioning ring 312 abuts against the right end surface of the push rod disc 32, and the left side of the spring 34 is sleeved on the left end protruding ring 3121 of the spring rebound positioning ring 312.

[0042] The spring rebound positioning ring 312 provides precise positioning for the spring 34, so that it remains stable during compression and rebounding and does not deviate or twist. The effect is to ensure the normal work of the spring 34, prolong the service life of the spring, and thus ensure that the locking cylinder can stably realize the extension and retraction of the push rod 42.

[0043] As a further preferred embodiment, the right annular interval of the piston 31 is provided with a protrusion 316, and the left end surface of the push rod disc 32 is provided with a push groove 322 in annular interval, and the protrusion 316 is matched and arranged in the push groove 322.

[0044] When the piston 31 moves, the protrusion 316 slides in the push groove 322, accurately transmits the pushing force, and ensures that the push rod disc 32 and the piston 31 move synchronously and stably.

[0045] As a further preferred embodiment, the air inlet 21 is connected with an air inlet connector 22, and the air outlet 11 is connected with an air outlet pipe 12.

[0046] The air inlet connector 22 is convenient to connect with an external air supply pipeline, ensures that the gas flows into the air inlet 21 smoothly, the air outlet pipe 12 guides the gas discharged from the cylinder body 2 to a designated position, makes the locking cylinder convenient and reliable to connect with an external air pipeline, guarantees the gas to flow smoothly, and maintains the normal working cycle of the locking cylinder.

[0047] As a further preferred embodiment, the front cover 1 is connected with a support assembly 8 outside the cylinder body 2.

[0048] The support assembly 8 provides support and fixation for the locking cylinder, so that it can be stably installed at a corresponding position of the vehicle.

[0049] The above describes the preferred embodiment of the utility model in detail. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the utility model without creative labor. Therefore, any technical scheme obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the utility model should be within the protection scope determined by the claims.

Claims

1. A push rod fork adjustable lock cylinder characterized by, It includes: The front cover, cylinder, push rod disc assembly and push rod fork assembly, the left end of the cylinder is provided with an air inlet, the front cover is provided with an air outlet, the right end of the front cover is connected with a dust cover, the front cover and the cylinder are connected by bolts, the combination slip ring is arranged at the inner connection of the front cover and the cylinder, the push rod disc assembly includes a piston, a push rod disc, a guide pipe and a spring, the piston is slidably arranged in the cylinder, the push rod disc is arranged at the right end of the piston, the guide pipe is fixedly connected to the right end of the push rod disc, and the right end of the guide pipe is slidably arranged in the front cover, the spring is sleeved on the guide pipe and located between the piston and the front cover, the push rod fork assembly includes a push rod seat, a push rod, a connecting rod and a connecting fork, the push rod seat passes through the push rod disc, the push rod is connected to the right end of the push rod seat, the right end of the push rod extends out of the dust cover, the connecting rod is threadedly connected to the right end of the push rod, and the connecting fork is mounted to the right end of the connecting rod.

2. A push rod fork adjustable lock cylinder according to claim 1, wherein The left side of the front cover is provided with an annular guide groove I for assembling the dust cover, the left end and the right end of the dust cover are provided with annular guide grooves II, and the annular guide grooves II are mounted with clamps.

3. A push rod fork adjustable lock cylinder as defined in claim 1 wherein, The combination slip ring includes a guide ring and a guide ring O-shaped ring, the outer side of the guide ring is provided with a groove, the groove is arranged opposite to the inner connection of the front cover and the cylinder, and the guide ring O-shaped ring is arranged in the groove.

4. The lock cylinder of claim 1, wherein, The push rod seat includes a ball rod part, a tapered ball part and a connecting part which are fixed to the right in sequence, the middle part of the push rod disc is provided with a tapered hole, the right side of the piston is provided with a ball groove matched with the shape of the left end surface of the ball rod part, the outer side of the ball rod part is sleeved with a buffer O-shaped ring, the tapered ball part is slidably arranged in the tapered hole, a hole steel wire is clamped in the inner groove of the piston, and the push rod disc and the piston are controlled to move synchronously through the hole steel wire.

5. The lock cylinder of claim 1, wherein, The inner part of the push rod is provided with a channel, the left end of the connecting rod is arranged without being in contact with the channel, a threaded sleeve is threadedly connected to the middle part of the connecting rod, the threaded sleeve is threadedly connected to the right end of the push rod, the connecting fork is threadedly connected to the right end of the connecting rod, and the left end surface of the connecting fork is arranged in contact with the right end surface of the push rod.

6. A push-pole fork adjustable locking cylinder as defined in claim 1 wherein, The left side of the piston is sleeved with a Y-shaped sealing ring, the outer side of the Y-shaped sealing ring is arranged in contact with the inner wall of the cylinder, a shaft steel wire is clamped in the outer groove of the piston, and the Y-shaped sealing ring and the piston are controlled to move synchronously through the shaft steel wire and the right end of the piston.

7. A push-pole fork adjustable locking cylinder as defined in claim 1 wherein, The right side of the piston is provided with a spring rebound positioning ring, the left side of the spring rebound positioning ring abuts against the right end surface of the push rod disc, and the left side of the spring is sleeved with a left end protruding ring of the spring rebound positioning ring.

8. The lock cylinder of claim 1, wherein, The right side of the piston is annularly and intervaliy provided with protrusions, the left end surface of the push rod disc is annularly and intervaliy provided with push grooves, and the protrusions are arranged in the push grooves.

9. The lock cylinder of claim 1, wherein, The air inlet is connected with an air inlet connector, and the air outlet is connected with an air outlet pipe.

10. The lock cylinder of claim 1, wherein, The front cover and the cylinder are connected with a support assembly.

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