CN207059677U - Vehicle hitch and oil rig trailer - Google Patents

Abstract

The utility model discloses a vehicle suspension device and an oil drilling rig trailer. The vehicle suspension device is applied to a vehicle frame, and the suspension device includes a fixing part, a telescoping part and a connecting part; the fixing part is installed on the vehicle frame; The telescopic part is telescopically fixed to the fixed part, and the telescopic part has a driving device, and the driving device drives the telescopic part to extend or retract; the connecting part is located at the telescopic part away from the fixed part one end. It can meet the requirements that the frame can be lifted and lowered freely, and the walking mechanism can be controlled to leave the ground. An oil drilling rig trailer is provided, which meets the overall transportation requirements of the derrick, base, and auxiliary equipment of the entire drilling rig, and the vehicle suspension device installed on the trailer solves the problem that the base of the drilling rig is on the ground and the tires are off the ground during operation. The base of the drilling rig maintains a high ground clearance requirement.

Description

Vehicle hitch and oil rig trailer

technical field

The utility model belongs to rapid transport equipment for the whole drilling rig and auxiliary equipment, and relates to a novel height-adjustable vehicle suspension device and an oil drilling rig trailer equipped with the device.

Background technique

Suspension is the general term for all force-transmitting connection devices between the frame of the car and the axle or wheels, its function is to transmit the force and torque acting between the wheel and the frame, and the buffer is transmitted from the uneven road to the frame or The impact force of the car body and attenuate the vibration caused by it, so as to ensure that the car can run smoothly.

At present, many types of vehicles have technical requirements for height adjustment. The general implementation method is to install a lifting device between the frame and the axle of the running gear or between the ground, and considering the importance of the suspension for vehicle safety , the general choice is to not change the suspension, the lifting of the frame directly drives the suspension and the axle lift, and the other is to improve the suspension into a passive telescopic structure, and the lifting of the frame will not lift the axle.

The suspension of the prior art cannot fully meet the demand. When some vehicles are switched from the transport state to another use state, the vehicle frame needs to be lowered to make the equipment on the frame sit on the bottom. The suspension of the prior art cannot realize this.

In addition, drilling rigs and auxiliary equipment at home and abroad are gradually improved to fast-moving modules, and small and medium-sized drilling rigs such as 40D and 50D hope that the derrick and base of the drilling rig can have the fast-moving function together, which requires a utility model to design a drilling rig trailer. When the trailer works as a drilling rig platform, it can be used as a trailer when it is moving fast, but it must meet the landing requirements of the drilling rig base platform integrated on the trailer when working, and at the same time it needs the tires to be off the ground, and the drilling rig base that works on the ground when driving The platform must have sufficient ground clearance.

The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.

Utility model content

The purpose of the utility model is to provide a novel height-adjustable vehicle suspension device, which can satisfy the requirements that the vehicle frame can be lifted and lowered freely, and the running mechanism can be controlled to leave the ground.

Another object of the present utility model is to provide a trailer for an oil drilling rig, which meets the requirements for the integration and transportation of the derrick, base, and auxiliary equipment of the entire drilling rig, and the vehicle suspension device installed on the trailer solves the problem of the drilling rig base during work. Landing and tires off the ground, the drilling rig base maintains a high ground clearance working condition during transportation, and the electronically controlled hydraulic unit controls the suspension lifting and automatic locking to achieve the purpose of rapid movement more conveniently and quickly.

In order to achieve the purpose of the above-mentioned utility model, the utility model adopts the following technical solution: provide a vehicle suspension device, which is applied to a vehicle frame, the suspension device includes a fixed part, a telescopic part and a connecting part; the fixed part is installed on the The frame; the telescopic part is telescopically fixed to the fixed part, the telescopic part has a driving device, and the driving device drives the telescopic part to extend or retract; the connecting part is located at the telescopic part one end away from the fixing part.

According to an embodiment of the present utility model, the suspension device further includes a locking mechanism, and the telescopic part and the fixed part are relatively positioned by the locking mechanism, so that the fixed part can be selected to be in the extended state or the retracted state. The telescopic part.

According to an embodiment of the present invention, the fixed part and the telescopic part are structures that can be nested and assembled with each other. After assembly, the fixed part and the telescopic part have a hollow space inside, and the driving device is located at The hollow space; one end of the driving device is connected to the fixed part, and the other end is connected to the telescopic part, and the driving device linearly drives the telescopic part to extend or retract.

According to an embodiment of the present utility model, wherein the locking mechanism is fixedly installed on the vehicle frame, the fixed part is provided with a positioning hole corresponding to the locking mechanism, and the telescopic part is provided with multiple positioning holes corresponding to the positioning hole. Each locking hole is aligned with the positioning hole on different strokes of the stretching part; the locking mechanism has a movable positioning pin, and the positioning pin can be controlled to penetrate or move out. The positioning hole and the locking hole are used to lock the telescopic part.

According to an embodiment of the present utility model, wherein the locking mechanism includes a linear driver, a connecting piece and at least two positioning pins, the linear driver is fixed to the vehicle frame, and the connecting piece is connected to the linear driver With the positioning pin, the two positioning pins are fixed on the end of the connecting piece away from the linear driver; the positioning pin is along the line connecting the positioning hole of the fixed part and the locking hole of the telescopic part direction extension.

According to an embodiment of the present utility model, the driving device is a hydraulic cylinder.

According to one aspect of the present utility model, an oil drilling rig trailer is provided, including a vehicle frame, a traveling mechanism, outriggers, an oil drilling rig, and the aforementioned vehicle suspension device.

According to an embodiment of the present utility model, the running mechanism is connected to the connecting portion, and the running mechanism is installed on the vehicle frame through the suspension device.

According to an embodiment of the present utility model, there are a plurality of outriggers, which are distributed and installed on the frame, and all of the outriggers face the side on which the running mechanism is installed, so that the outriggers can support the ground on the ground. the frame.

According to an embodiment of the present utility model, the vehicle frame is an assembled vehicle frame, and the vehicle frame includes a front frame, a left rear frame and a right rear frame which are assembled and connected to each other.

According to an embodiment of the present invention, the plurality of outriggers include combined outriggers, and the combined outriggers include hydraulic outriggers and mechanical outriggers.

According to an embodiment of the present utility model, the vehicle frame includes a plurality of assembled walking platforms, and each of the walking platforms is installed on the outside of the vehicle frame through pin shafts.

According to an embodiment of the present invention, the running mechanism includes an axle and tires, the axle is fixed to the connecting portion, and the tire is installed on the axle through the axle.

According to an embodiment of the utility model, it also has an electronically controlled hydraulic control device, so as to control each power component in the oil drilling rig trailer.

As can be seen from the above technical solutions, the advantages and positive effects of the vehicle suspension device of the present utility model and the oil drilling rig trailer are:

The technical idea of the utility model is different from the design habit of the existing liftable vehicle frame, and an improvement of the controlled lift is proposed for the suspension device. In this way, with the above structure, the suspension device can realize controlled lifting, and can effectively realize multiple working modes such as suspension shrinkage and suspension extension, so that the vehicle suspension system can realize more functions and have more flexible working modes.

The embodiment of the utility model provides a vehicle suspension device and an oil drilling rig trailer equipped with the device. A drilling rig trailer with a height-adjustable suspension device is proposed, all of which can be controlled by electro-hydraulic control, and the height of the suspension can be adjusted quickly and conveniently through the remote control, which can effectively realize the contraction of the suspension during work and the suspension of the suspension during transportation. It is extended and equipped with an automatic locking mechanism, which effectively solves the problem of insufficient ground clearance, and meets the integration work and rapid movement of the derrick, base and auxiliary equipment of the drilling rig, making the operation more convenient and quick.

Description of drawings

Various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals designate the same or similar parts throughout. in:

Fig. 1 is the front view structure schematic diagram of the oil drilling rig trailer working state of the utility model embodiment;

Fig. 2 is a schematic structural diagram of the front view of the oil drilling rig trailer in the transportation state of the embodiment of the utility model;

Fig. 3 is a schematic top view structure diagram of an assembled frame of an oil drilling rig trailer according to an embodiment of the present invention;

Fig. 4A is a front structural schematic diagram of a vehicle suspension device according to an embodiment of the present invention;

Fig. 4B is a left view structural schematic diagram of the vehicle suspension device according to the embodiment of the present invention;

Fig. 5A is a front structural schematic diagram of the locking mechanism of the embodiment of the present invention;

Fig. 5B is a schematic top view structural diagram of the locking mechanism of the embodiment of the present invention;

Fig. 6 is a schematic structural diagram of the front view of the combined hydraulic mechanical outrigger according to the embodiment of the present invention;

Fig. 7A is a structural schematic diagram of a multi-block assembled walking platform according to an embodiment of the present invention;

FIG. 7B is a schematic cross-sectional structure along line A-A in FIG. 7A .

In the figure,

1. Frame; 11. Front frame; 12. Left rear frame; 13. Right rear frame; 14. Assembly walking platform; 141. Pin shaft; 2. Suspension device; 21. Fixed part; 211. Positioning Hole; 212, hollow; 22, telescopic part; 221, locking hole; 222, hollow; 23, connecting part; 24, driving device; 25, locking mechanism; 251, linear drive; 252, connector; 253, positioning Pin; 3. Traveling mechanism; 31. Axle; 32. Tire; 4. Combined outrigger; 41. Hydraulic outrigger; 42. Mechanical outrigger; 43. Bracket; 5. Oil drilling rig; 6. Rear hydraulic outrigger; 7. Trailer head.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully incorporate the concepts of example embodiments. communicated to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

Fig. 4A is a front structural schematic diagram of a vehicle suspension device according to an embodiment of the utility model; Fig. 4B is a left side structural schematic diagram of a vehicle suspension device according to an embodiment of the utility model.

As shown in the figure, an embodiment of the present invention provides a vehicle suspension device 2, which can be applied to a vehicle frame 1. The suspension devices 2 are generally arranged in pairs, and the vehicle frame 1 can optionally be equipped with at least one pair of suspension devices 2. The suspension device 2 mainly includes a fixing part 21 , a telescoping part 22 and a connecting part 23 . The fixed part 21 can be fixedly installed on the vehicle frame 1; the telescopic part 22 is telescopically fixed on the fixed part 21, and the telescopic part 22 has a driving device 24, and the driving device 24 drives the telescopic part 22 to extend or retract; the connecting part 23 Located at the end of the telescopic portion 22 away from the fixing portion 21 , the connecting portion 23 is used to fix the running mechanism 3 of the vehicle.

The technical idea of the utility model is different from the design habit of the existing liftable vehicle frame, and an improvement of the controlled lift is proposed for the suspension device. In this way, with the above structure, the suspension device 2 can realize controlled lifting, and can effectively realize multiple working modes such as suspension shrinkage and suspension extension, so that the vehicle suspension system can realize more functions and have more flexible working modes.

According to one embodiment of the present utility model, the fixed part 21 and the telescopic part 22 are in a structural form that can be nested and assembled with each other. Hollow 212. The fixing part 21 can be fixed on the vehicle frame 1 by welding or screwing. The telescopic part 22 can also be selected as a cylindrical structure or other shapes that can be matched, and the shape that can be matched with the fixed part 21 can be selected. It can be fitted from the outside of the fixed part 21, or it can be installed inside the fixed part 21. The inside of the telescopic part 22 Optionally have a hollow 222 as well.

After assembly, a hollow space can be formed inside the fixed part 21 and the telescopic part 22, and the driving device 24 is located in the hollow space; for example, the driving device 24 can be selected as a hydraulic cylinder or a screw motor, and the cylinder body of the hydraulic cylinder can be fixed on the The inner end of the fixed part 21 is used for fixing and controlling, and the front end of the piston rod can be connected with the lower end or the middle part of the telescopic part 22. Of course, according to the understanding of those skilled in the art, reverse installation of the hydraulic cylinder can also be realized. In this way, the driving device 24 linearly drives the telescopic part 22 to extend or retract, and the control device of the driving device 24 can be used to lock and position the telescopic part 22, so as to position the telescopic part 22 at least in the extended state or the retracted state .

In an example shown in the figure, the fixed part 21 is a steel tube in the shape of a square tube, and the telescopic part 22 is also selected to be a steel tube in the shape of a square tube, and the external dimension of the telescopic part 22 is smaller than that of the fixed part 21, so that the expansion and contraction The part 22 is used as an inner sleeve, which is fitted inside the fixed part 21 and can move up and down. The driving device 24 can optionally be installed inside the hollow 222 of the telescoping portion 22 . The telescopic part 22 can have a larger telescopic stroke in the fixed part 21; it is also convenient for the driving device 24 to drive; and it also has the advantage of occupying less space. One option is to fix the main body of the driving device 24 to the fixed part 21, so that the main body of the driving device 24 can remain stationary, and only the driving head drives the telescopic part 22 to move, which can facilitate control and reduce failures.

One end of the body of the driving device 24 and one end of the driving head can be installed and fixed respectively through the mounting seat, the pin shaft, the fixed part 21, and the telescopic part 22, so as to connect the fixed part 21 on the vehicle frame and the telescopic part 22 on the suspension. . The driving device 24 operates, and the suspension with the telescopic part 22 can be slid out or retracted in the fixed part 21. When it moves to the designated position, the fixed part 21 and the telescopic part 22 can be locked by the available positioning locking mechanism. The expansion and contraction of the driving device 24 can be controlled entirely by the electronically controlled hydraulic system. The electronically controlled hydraulic system has the advantages of large load and easy remote centralized control, and can accurately adjust the suspension height in a time-saving and labor-saving manner.

FIG. 5A is a schematic front structural view of the locking mechanism of the embodiment of the utility model; FIG. 5B is a schematic top view of the locking mechanism of the embodiment of the utility model. As shown in the figure, in one embodiment of the present utility model, the suspension device 2 can also include a locking mechanism 25, and the locking mechanism 25 can be selected to relatively locate the telescopic part 22 and the fixed part 21, so as to choose to be in the extended state. Or the telescopic part 22 is locked in the retracted state, and the telescopic part 22 can be stably positioned on the premise of low energy consumption. According to the understanding of those skilled in the art, there are many possible implementations of the locking mechanism 25, and it can only realize the controllable delivery and recovery of positioning parts such as positioning pins, which belongs to the protection scope of the present utility model. Mechanism 25 can also be the one-way dead bolt that is driven by motor or other power device, or locking mechanism 25 can also be positioned at telescoping part 22 inside or outside by the fork that motor or other power device drives, or be driven by power such as motor. rack propulsion device. The utility model is not limited thereto.

In a specific embodiment, the locking mechanism 25 can be optionally fixedly installed on the vehicle frame 1 or the fixed portion 21 . The fixed part 21 can be provided with a positioning mechanism corresponding to the locking mechanism 25. Specifically, it is shown in the figure that the fixed part 21 has a positioning hole 211, and the telescopic part 22 also has a corresponding positioning mechanism. Specifically, it can be selected that the corresponding positioning hole 211 is provided with multiple locking mechanisms. Hole 221 , a plurality of locking holes 221 are separated by a certain distance in the axial direction of the telescopic part 22 , and each locking hole 221 can be aligned with the positioning hole 211 on different strokes of the telescopic part 22 . The locking mechanism 25 can drive and control a movable positioning pin, so that the positioning pin can be controlled to penetrate or move out of the positioning hole 211 and the locking hole 221 , so as to lock the telescopic part 22 .

As shown in the figure, the positioning hole 211 and the locking hole 221 can be set as a pair of opposites, so that the fixed part 21 and the telescopic part 22 can be penetrated by the positioning pin, so as to support and fix the two ends of the positioning pin to carry The weight of the whole vehicle frame 1. Preferably, two sets of positioning holes 211 and locking holes 221 are arranged side by side at the same position to balance the pressure distribution.

According to the example shown in the drawings, the locking mechanism 25 can also include a linear driver 251, a connecting piece 252 and at least two positioning pins 253, the linear driver 251 is fixed on the vehicle frame 1, and the linear driver 251 can be selected as a linear motor, a hydraulic cylinder, Devices such as cylinders or leadscrews. The connecting piece 252 connects the linear driver 251 and the positioning pin 253 . The connecting piece 252 can be a connecting rod. When there are multiple positioning pins 253 , the connecting piece 252 can branch into multiple positioning pin 253 fixing seats, so as to fix the positioning pin 253 .

As shown in the figure, a locking mechanism 25 can optionally use a linear driver 251 and a connecting piece to connect two positioning pins 253 . Correspondingly, the positioning hole 211 of the fixing part 21 and the locking hole 221 of the telescoping part 22 are also two parallel. Two positioning pins 253 are fixed on an end of the connecting member 252 away from the linear driver 251 ; the positioning pins 253 extend along the line connecting the positioning hole 211 of the fixing portion 21 and the locking hole 221 of the telescoping portion 22 .

As shown in the figure, a linear driver 251 can be used to control the two pin shafts through the triangular connector 252. The structural design of the tripod can effectively compensate for the alternating creep problem that occurs when the force is uneven. The electronically controlled hydraulic control system effectively completes the locking work of the vehicle suspension device 2 .

Fig. 1 is the schematic diagram of the front view structure of the working state of the oil drilling rig trailer of the embodiment of the utility model; Fig. 2 is the schematic diagram of the front view structure of the transportation state of the oil drilling rig trailer of the embodiment of the utility model; Fig. 3 is the schematic diagram of the front view of the trailer of the utility model embodiment Schematic diagram of the top view structure of the assembled frame.

As shown in the figure, according to an embodiment of the utility model, an oil drilling rig trailer is also provided, which mainly includes an assembled frame 1, a vehicle suspension device 2, a running mechanism 3, a climbing ladder, a multi-block assembled walking platform, Fence, multiple outriggers 4 and electro-hydraulic control unit. The vehicle frame 1 top can also be installed as ancillary equipment such as an oil drilling rig derrick, a drilling rig base, a winch, a BOP room, and a rope rewinding machine.

As shown in FIG. 3 , the assembled frame 1 may mainly include a front frame 11 , a left rear frame 12 , and a right rear frame 13 . Vehicle frame 11, left rear vehicle frame 12, right rear vehicle frame 13 can carry out assembling connection by flange seat and bolt. In order to solve the problem that the structure size of the rig trailer is too large and the entire frame 1 cannot be transported to the place of use as a whole, with the assembled frame, the trailer frame 1 can be assembled in front, rear, left and right, which is convenient for splitting into the site, and then On-site assembly and use.

Fig. 7A is a schematic top view structure diagram of a multi-block assembled walking platform according to an embodiment of the present invention; Fig. 7B is a schematic cross-sectional structure diagram along line A-A in Fig. 7A. As shown in the figure, the vehicle frame 1 also includes a plurality of assembled walking platforms 14, and each assembled walking platform 14 can be optionally installed on the outside of the vehicle frame 1 through pin shafts 141, so as to solve the transportation size limitation and reduce manufacturing difficulty.

The running mechanism 3 is selected to be connected and fixed with the connecting portion 23 at the bottom of the vehicle suspension device 2 , and the running mechanism 3 can be installed on the vehicle frame 1 through the suspension device 2 . Running mechanism 3 can mainly comprise vehicle axle 31 and tire 32, and vehicle axle 31 is fixed with connecting portion 23, and tire 32 is installed on vehicle axle 31 by axle.

The supporting legs can be multiple, distributed and installed on the vehicle frame 1, and the supporting legs are all facing the side where the running mechanism 3 is installed, so that the supporting legs can support the vehicle frame 1 on the ground; The hydraulic outrigger 6 and the combined outrigger 4 include a hydraulic outrigger 41 , a mechanical outrigger 42 and a bracket 43 . When the use state of the vehicle frame 1 is switched, multiple legs can be selected to actively support the vehicle frame 1. In this way, the driving device in the suspension device 2 mainly drives the telescopic part and the running mechanism 3 to lift or lower it. The load requirement of the driving device can be reduced, which is convenient for cost control and volume control.

Fig. 6 is a schematic diagram of the front structure of the combined outrigger of the embodiment of the utility model; 41 are respectively installed on the inner and outer sides of the problem that the force is not good. Among them, the hydraulic cylinder of the hydraulic support leg 41 is connected by a pin shaft, which can also effectively solve the installation problem caused by the left and right of the mechanical support leg 42 and the front and rear of the entire frame 1. Installation problems caused by misalignment.

The trailer meets the overall transportation requirements of the derrick, base, and auxiliary equipment of the entire drilling rig, and the vehicle suspension device 2 installed on the trailer solves the problem that the base of the drilling rig is grounded and the tires are off the ground during operation, and the base of the drilling rig is kept high off the ground during transportation. The working condition requirements of the gap, and the electronically controlled hydraulic unit controls the suspension lifting and automatic locking to achieve the purpose of fast moving more conveniently and quickly.

With reference to the accompanying drawings, when the drilling rig is working, the base of the oil drilling rig 5 at the tail of the trailer lands, and together with the front combined outrigger 4, the entire trailer and the upper body are supported horizontally, and the ladder, walking platform, fence and trailer frame 1 on the trailer are formed. A drilling rig work platform. During work, it is required that the trailer tires are off the ground and not loaded, and the telescopic part 22 is contracted by the driving device 24 in the vehicle suspension device 2 controlled by electro-hydraulic control, and the automatic locking mechanism 25 is controlled to lock the suspension. When the drilling work is finished and needs to be transferred to another site for transportation, first remove the locking pins of the mechanical legs 42 in the front combined legs 4, and then move multiple hydraulic legs 41 of the combined legs 4 at the same time to move the entire rig trailer including the top loading Lift until the base of the drilling rig is at a greater height from the ground, then move the vehicle suspension device 2 out until the tire touches the ground, and lock it with the automatic locking mechanism 25. After confirming the locking, hook the trailer head 7 with the tractor, and After the completion, the front and rear hydraulic outriggers 6 are put away, and the base of the drilling rig at the rear of the trailer has a relatively high height from the ground, which has good passability, so as to reach the transportation state. At this time, it can adapt to the driving conditions of various harsh working environments of the oil drilling rig.

The embodiment of the utility model provides a vehicle suspension device and an oil drilling rig trailer equipped with the device. A drilling rig trailer with a height-adjustable suspension device is proposed, all of which can be controlled by electro-hydraulic control, and the height of the suspension can be adjusted quickly and conveniently through the remote control, which can effectively realize the contraction of the suspension during work and the suspension of the suspension during transportation. It is extended and equipped with an automatic locking mechanism, which effectively solves the problem of insufficient ground clearance, and meets the integration work and rapid movement of the derrick, base and auxiliary equipment of the drilling rig, making the operation more convenient and quick.

When introducing elements of the invention or preferred embodiments thereof, the terms "a", "an", "the" and "said" are intended to mean that there are one or more of the elements. The terms "comprising", "comprising", and "having" and the like are defined to be inclusive and mean that there may be additional elements other than the listed elements.

As various changes could be made in the above constructions and methods without departing from the scope of the invention, it is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Claims (14)

1. a kind of suspension device for vehicle, applied to a vehicle frame, it is characterised in that the suspension arrangement includes fixed part, pars contractilis With connecting portion；The fixed part is installed on the vehicle frame；The pars contractilis is telescopically secured to the fixed part, described flexible Portion has drive device, drives the pars contractilis to stretch out or retract with the drive device；The connecting portion is in described flexible The one end of portion away from the fixed part.

2. suspension device for vehicle as claimed in claim 1, it is characterised in that the suspension arrangement also includes a lockable mechanism, The pars contractilis and fixed part are relatively positioned with the lockable mechanism, select to fix institute in stretching state or retracted mode with this State pars contractilis.

3. suspension device for vehicle as claimed in claim 1, it is characterised in that the fixed part is mutual for energy with the pars contractilis The structure of assembling is socketed, after assembling, with having hollow space inside the pars contractilis, the drive device is located at the fixed part The hollow space；Described drive device one end connects the fixed part, and the other end connects the pars contractilis, the drive device Pars contractilis described in linear drives stretches out or retracted.

4. suspension device for vehicle as claimed in claim 2, it is characterised in that the lockable mechanism is fixedly installed in the car Frame, the fixed part correspond to the lockable mechanism and offer positioning hole, the pars contractilis correspond to the positioning hole offer it is multiple Locking hole, each locking hole align the positioning hole on the different strokes that the pars contractilis stretches out respectively；The lockable mechanism With a removable alignment pin, the alignment pin controlled can penetrate or remove the positioning hole and locking hole, with described in this locking Pars contractilis.

5. suspension device for vehicle as claimed in claim 4, it is characterised in that the lockable mechanism includes linear actuator, connected Fitting and at least two alignment pins, the linear actuator are fixed on the vehicle frame, and the connector connection is described straight Line drive and the alignment pin, two alignment pins are fixed on the one end of the connector away from the linear actuator； The alignment pin along the fixed part positioning hole and the pars contractilis locking hole line direction extend.

6. the suspension device for vehicle as described in any one of claim 1 to 5, it is characterised in that the drive device is hydraulic cylinder.

7. a kind of oil-well rig trailer, including vehicle frame, walking mechanism, supporting leg, oil-well rig and such as claim 1 to 6 are any Suspension device for vehicle described in.

8. oil-well rig trailer as claimed in claim 7, it is characterised in that the walking mechanism is connected with the connecting portion, The walking mechanism is installed on the vehicle frame by the suspension arrangement.

9. oil-well rig trailer as claimed in claim 7, it is characterised in that the supporting leg is multiple, and distributing installation is in described Vehicle frame, the supporting leg both face towards the side for being provided with the walking mechanism, can be in vehicle frame described in ground supports with the supporting leg.

10. oil-well rig trailer as claimed in claim 7, it is characterised in that the vehicle frame is assembled vehicle frame, the vehicle frame Front frame including mutual assembly connection, left back vehicle frame and right Rear frame.

11. oil-well rig trailer as claimed in claim 9, it is characterised in that multiple supporting legs include combining supporting leg, institute Stating combination supporting leg includes hydraulic leg and mechanical lag.

12. the oil-well rig trailer as described in any one of claim 7 to 11, it is characterised in that how packaged the vehicle frame include Walked on stage with formula, each described walk on stage is arranged on the frame outside by bearing pin.

13. the oil-well rig trailer as described in any one of claim 7 to 11, it is characterised in that the walking mechanism includes car Bridge and tire, the vehicle bridge are fixed with the connecting portion, and the tire is installed on the vehicle bridge by axletree.

14. the oil-well rig trailer as described in any one of claim 7 to 11, it is characterised in that also with an electric-controlled hydraulic control Device processed, each power part in the oil-well rig trailer is controlled with this.