CN111873887A

CN111873887A - Vehicle stop device and have its vehicle, examine weighing apparatus car

Info

Publication number: CN111873887A
Application number: CN202010791520.4A
Authority: CN
Inventors: 李文斌; 刘志斌; 王飘; 张力虎; 黄世伟
Original assignee: Changsha Intelligent Special Vehicle Research Institute Co ltd
Current assignee: Changsha Intelligent Special Vehicle Research Institute Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2020-11-03
Anticipated expiration: 2040-08-07
Also published as: CN111873887B

Abstract

The invention discloses a vehicle limiting device, an engineering truck with the same and a balance checking vehicle with the same, wherein the vehicle limiting device comprises a base, a turnover mechanism and a limiting mechanism, wherein the base is arranged at the tail part of a vehicle chassis; the turnover mechanism comprises a lifting plate, one end of the lifting plate is hinged with the vehicle chassis and is driven to turn over by a driving piece; the limiting mechanism comprises a blocking rod arranged on the base, and the blocking rod moves to the position above the lifting plate along with the lifting plate in a turnover and lifting mode. The limiting mechanism is linked with the lifting plate, and when the lifting plate swings to a horizontal state, the limiting mechanism stretches out to block the forklift. The problem that the existing carriage tail plate does not have a limiting protection device can be solved.

Description

Vehicle stop device and have its vehicle, examine weighing apparatus car

Technical Field

The invention relates to the field of special vehicles, in particular to a vehicle limiting device and an engineering truck and a balance detecting truck with the same.

Background

In recent years, with the rapid development of economy in China, the number of large-tonnage electronic motor balances is rapidly increased, and the large-tonnage electronic motor balances are widely applied to aspects such as logistics transportation weighing, high-speed charging weighing, industrial and mining enterprise weighing and the like. In areas with developed industry and transportation industry, the holding capacity of large-tonnage electronic motor balances is a remarkable number, and ensuring the weighing accuracy of the motor balances becomes a difficult problem for the metering department.

The measuring and weighing vehicle is a tool for transporting, loading and unloading weights and moving on the table top of a weighing apparatus during measuring performance of the weighing apparatus, and is a special detecting tool vehicle for large-tonnage electronic automobile weighing apparatus. The current metering balance-checking vehicle adopts a mode that a crane lifts weights, and has the defects of single structure, low working efficiency and low safety factor.

In view of the defects of the crane (crane) system, in recent years, a forklift is used to replace the crane to perform weight operation, and the balance detecting vehicle needs to be provided with a hydraulically controlled ladder stand at the tail of a trailer for the forklift to drive on and off. The truck balance is examined to fork truck formula generally can be a little higher than the self-discharging formula in the cost and examine the truck balance, but the mode of operation is more reasonable, and efficiency is higher, owing to at the whole in-process of loading and unloading weight, independently accomplish by fork truck, does not need ground personnel to assist, so the security has also promoted greatly.

For example, the chinese patent discloses a balance detecting vehicle with a swing arm mechanism (publication number CN207551858U), comprising a swing arm mechanism and a forklift, wherein the swing arm mechanism is arranged inside a cargo box and fixedly mounted on a bottom plate at the tail of the cargo box, and comprises a telescopic cylinder and a swing arm, the end of the telescopic cylinder body is mounted on the cargo box bottom plate of the chassis vehicle through a rotating shaft of a first mounting seat, and a telescopic rod of the telescopic cylinder is rotatably connected with the swing arm through a rotating shaft of a third mounting seat; the bottom of the swing arm is rotationally connected with a rotating shaft of a second mounting seat on a cargo box bottom plate of the chassis truck; the top of the swing arm is connected with a forklift frame, and the forklift is parked on the forklift frame. This patent is through setting up swing arm mechanism for fork truck gets on or off the bus fast, has reduced the danger of weight shipment during the use, consequently has work efficiency height, operates more portably, maintains simple advantage. But because fork truck weight is great, the risk such as rock appears easily in the swing arm lift in-process in the swing arm mechanism realization, has increased the operational risk of whole equipment.

In addition, as disclosed in the chinese patent, a van-type weighing and weighing apparatus vehicle (publication number CN209972281U) comprises a carriage, wherein the carriage comprises a weight placing area and a forklift placing area; the tail part of the carriage is hinged with a tail plate; fork truck can place in fork truck and place the district. The tail plate is hinged with a first tail plate and a second tail plate, and the lower end of the first tail plate is hinged with the lower end of the rear part of the carriage; the second tailgate articulates the upper end with first tailgate and supports through second hydraulic support piece, the tailgate extensible board is to ground, as fork truck's business turn over the passageway of carriage. This patent is through setting up the carrier that the tailboard passed in and out as fork truck, and the risk that adopts swing mechanism to bring has been overcome to a certain extent. However, the tail plate is inclined to the ground when working, so that the forklift is subjected to a certain backward pitching force when entering the carriage bottom plate, and unsafe factors of the movement of the forklift are increased. In addition, the forklift has no limit protection device in the carriage.

Therefore, it is necessary to further propose an improved solution to meet the safety requirement in view of the above drawbacks of the vehicle.

Disclosure of Invention

Therefore, it is necessary to provide a vehicle stopper device in order to solve the problem that the trunk floor does not have a stopper protection device.

A vehicle restraint device comprising:

the base is arranged at the tail part of the vehicle chassis;

the turnover mechanism comprises a lifting plate, one end of the lifting plate is hinged with the vehicle chassis and is driven to turn over by a driving piece;

and the limiting mechanism comprises a blocking rod arranged on the base, and the blocking rod moves to the upper part of the lifting plate along with the lifting plate in a turnover and lifting manner.

Preferably, the driving part is a first hydraulic cylinder, one end of the first hydraulic cylinder is hinged to the base, and the other end of the first hydraulic cylinder is hinged to the lifting plate.

Preferably, the limiting mechanism further comprises a sliding block, a connecting rod and a roller arranged on the lifting plate, one end of the connecting rod is hinged to the base, and the other end of the connecting rod is hinged to the sliding block; the sliding block is connected with the stop lever in a sliding mode, and the roller is in contact with the connecting rod.

Preferably, the climbing plate has a first position and a second position around a hinge point of the vehicle chassis under the driving of the first hydraulic cylinder, the first position is in a horizontal direction, and the second position is in an inclined direction.

Preferably, the tail plate further comprises a climbing plate, one end of the climbing plate is hinged with the base, and the other end of the climbing plate can be in contact with the ground; when the lifting plate is at the second position, the climbing plate is in butt joint with the lifting plate.

Preferably, the climbing plate comprises a first tail plate hinged to the tail of the chassis and a second tail plate hinged to one end of the first tail plate far away from the tail, and a first hinge shaft is arranged at the hinged position of the first tail plate and the second tail plate; the first tail plate and the carriage are driven to turn over through a first driving cylinder, and the first tail plate and the second tail plate are driven to turn over through the first driving cylinder.

Preferably, the vehicle restraining device further comprises a locking mechanism, the locking mechanism comprising:

the connecting seat is arranged on the first tail plate and is close to the first hinge shaft;

the locking piece is hinged with the connecting seat and comprises a clamping tongue part arranged close to the carriage and a locking part arranged close to the first hinge shaft;

the cam is fixedly arranged on the first hinge shaft and is abutted against the locking piece;

the buckle is arranged on the carriage and is used for being butted with the clamping tongue part; and

an elastic member that provides an elastic force that causes the locking member to abut against the cam;

the first tail plate and the second tail plate are in a furled state, and the elastic piece enables the clamping tongue to be clamped into the buckle.

Preferably, the cam is a disc cam, the section of the disc cam is a sector, and the plane where the straight edge of the sector is located is a locking plane.

The utility model also provides an engineering van, including foretell vehicle stop device.

The invention is provided with a vehicle limiting device comprising a base, a tail plate and a limiting mechanism, wherein the tail plate comprises a climbing plate and a lifting plate, the climbing plate is hinged on the base and can extend to the ground, one end of the lifting plate is hinged with a vehicle chassis, the other end of the lifting plate is hinged with a first hydraulic cylinder arranged on the base, and the first hydraulic cylinder drives the lifting. The limiting mechanism is linked with the lifting plate, and when the lifting plate swings to a horizontal state, the limiting mechanism stretches out to block the forklift. When the lifting plate swings to a state of being in butt joint with the climbing plate, the limiting mechanism is retracted so that the forklift can move on the tail pressing plate. The forklift can be directly driven into a carriage and also can be driven on a lifting plate, and a first hydraulic cylinder lifts the forklift to a horizontal state. The problem that the existing carriage tail plate does not have a limiting protection device can be solved.

Drawings

FIG. 1 is a schematic view of a vehicle restraint assembly in a first position in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of the vehicle restraint device of the embodiment of FIG. 1 in a second position;

FIG. 3 is a block diagram of a spacing mechanism in the embodiment of FIG. 1;

FIG. 4 is a schematic structural diagram of a truck or a truck for testing balance of a truck according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of the climbing plate in the embodiment of FIG. 1;

FIG. 6 is a schematic structural view of the embodiment of FIG. 5 with the locking mechanism in an unlocked state;

fig. 7 is a schematic structural view of the locking mechanism in a locked state in the embodiment of fig. 5.

Detailed Description

Referring to fig. 1 to 7, the vehicle stopper device includes a base 20, a tilting mechanism, and a stopper mechanism. The base 20 is mounted on the rear part of the vehicle chassis 11; the turnover mechanism comprises a climbing plate 50 and a lifting plate 40, wherein the climbing plate 50 is hinged to the base 20 and can extend to the ground, the climbing plate 50 comprises a first tail plate 51 and a second tail plate 52, the first tail plate 51 is hinged to the tail portion of the climbing plate, the second tail plate 52 is hinged to one end, away from the base 20, of the first tail plate 51, a first hinge seat is arranged at the edge, close to the second tail plate 52, of the first tail plate 51, a second hinge seat is arranged at the edge, close to the first tail plate 51, of the second tail plate 52, the second hinge seat is hinged to the first hinge seat, and a first hinge shaft is arranged at the hinge position of the first tail plate 51 and the second tail plate 52.

The lower end of the tail part of the carriage is provided with a base 20, the base 20 is provided with two hinge points, one of the two hinge points is connected with the lower end of a first tail plate 51, the other hinge point is connected with a first driving cylinder 53, the other end of the first driving cylinder 53 is hinged with the middle part of the first tail plate 51, and the first tail plate 51 is driven to overturn by the first driving cylinder 53.

In the embodiment, the middle parts of the first tail plate 51 and the second tail plate 52 are further provided with a hinge point for mounting a second driving cylinder 54, two ends of the second driving cylinder 54 are respectively hinged with the first tail plate 51 and the second tail plate 52, and the first tail plate 51 and the second tail plate 52 are driven to overturn by the second driving cylinder 54.

The lifting plate 40 is a square steel plate, one end of the lifting plate is hinged with the vehicle chassis 11, the other end of the lifting plate is hinged with a first hydraulic cylinder arranged on the base 20, and the lifting plate is driven to lift by the first hydraulic cylinder 30; the climbing plate 50 has a first position in a horizontal direction and a second position in an inclined direction around a hinge point of the vehicle chassis 11 driven by the first hydraulic cylinder 30. When the lifting plate 40 is at the second position, the lifting plate 40 is in butt joint with the climbing plate 50, the included angle between the lifting plate 40 and the climbing plate 50 ranges from-10 degrees to 10 degrees, it is noted that the optimal angle is 0 degree, and at this time, the upper surfaces of the climbing plates 50 of the lifting plate 40 are coplanar.

Referring to fig. 3, the limiting mechanism is linked with the lifting plate 40 and used for limiting and fixing the rear wheel of the forklift. In this embodiment, the limiting mechanism includes a stop lever 61, a sliding block 62, a connecting rod 63 and a roller 63 disposed on the lifting plate 40, one end of the connecting rod 63 is hinged to the base 20, and the other end is hinged to the sliding block 62; the roller 63 is in contact with the connecting rod 63; the slide block 62 is slidably connected to the stop lever 61. When the first hydraulic cylinder 30 drives the lifting plate 40 to move from the first position to the second position and the lifting plate 40 swings downwards, the connecting rod 63 swings inwards under the action of gravity, the sliding blocks 62 slide towards each other, and the stop lever moves downwards so that the forklift can be conveniently pulled down from the compartment. When the first hydraulic cylinder 30 drives the lifting plate 40 to move from the second position to the first position, the lifting plate 40 swings upwards to a horizontal state, the roller 63 pushes the connecting rod 63 to swing outwards, the sliding block 62 slides backwards, and the stop lever moves upwards and is higher than the lifting plate 40, so that the forklift is stopped.

It is worth noting that the vehicle limiting device disclosed by the invention is not limited to limiting and fixing of a forklift in a balance detection vehicle, and is also applicable to other vehicles such as trucks, obstacle-removing trailers and trailers.

The invention is provided with a vehicle limiting device comprising a base 20, a turnover mechanism and a limiting mechanism, wherein the turnover mechanism comprises a climbing plate 50 and a lifting plate 40, the climbing plate 50 is hinged on the base 20 and can extend to the ground, one end of the lifting plate 40 is hinged with the vehicle chassis 11, the other end of the lifting plate is hinged with a first hydraulic cylinder 30 arranged on the base 20, and the first hydraulic cylinder 30 drives the lifting. The limiting mechanism is linked with the lifting plate 40, and when the lifting plate 40 swings to a horizontal state, the limiting mechanism stretches out to block the forklift. When the lifter plate 40 swings into abutment with the riser plate 50, the stop mechanism retracts so that the truck moves on the tailgate. The forklift can be directly driven into the carriage, and can also be driven on the lifting plate 40, and the first hydraulic cylinder 30 lifts the forklift to a horizontal state. The problem that the existing carriage tail plate does not have a limiting protection device can be solved.

Referring to fig. 6 and 7, in another embodiment of the present invention, the locking mechanism includes a coupling seat 72, a locking member 73, a cam 71, a catch 74, and an elastic member 75. The connecting seat 72 is provided on the first tail plate 51 and is disposed near the first hinge shaft. The locking piece 73 is hinged with the connecting seat 72, and the hinge point of the locking piece 73 and the connecting seat divides the locking piece 73 into two parts, including a latch part 73b arranged close to the carriage and a locking part 73a arranged close to the first hinge shaft; the cam 71 is fixedly provided on the first hinge shaft and abuts against the locking member 73. The cam 71 is a disc cam, the section of the disc cam is in a sector shape, the plane where the straight edge of the sector shape is located is a locking plane, and when the first tail plate 51 and the second tail plate 52 are in a folded state, the locking plane is abutted to the elastic piece 75. A buckle 74 is arranged on the carriage and used for being in butt joint with the clamping tongue portion 73 b; the elastic member 75 provides an elastic force for abutting the locking member 73 against the cam 71. The elastic member 75 is a tension spring, one end of which is disposed on the first tail plate 51, and the other end of which is connected to the latch 73 b. When the first tail plate 51 and the second tail plate 52 are in the closed state, the elastic member allows the latch portion 73b to be latched into the latch 74. The buckle 74 includes a locking protrusion disposed on the carriage, and a free end of the tongue portion 73b is bent to hook a bent end of the locking protrusion.

In the present embodiment, the cam 71 has a sector-shaped cross section, and the cam 71 is a sector-shaped cam, and the rotation center of the cam is disposed near the arc center of the sector. When the first and

second tail plates

51 and 52 are in the open state, the arc surface of the sector cam abuts against the lock member 73 under the tension of the tension spring, and the tongue-catching portion 73b is located above the catch 74. When the first tail plate 51 and the second tail plate 52 are in a folded state, the cam 71 rotates along with the second hinge shaft, the locking plane is abutted to the locking part 73a under the tension of the tension spring, the distance between the locking part 73b and the rotation center of the cam 71 is reduced, the latch part 73b swings downwards and is abutted to the buckle 74, automatic locking is realized, and the buckle 74 is abutted to the latch part 73b to limit the overturning of the first tail plate 51。

Further, the opposite end surfaces of the first tail plate 51 and the second tail plate 52 are provided with accommodating grooves corresponding to each other, the accommodating groove on the first tail plate 51 is a first accommodating groove, and the accommodating groove on the second tail plate 52 is a second accommodating groove. The cam 71 is fixedly disposed on the first hinge shaft and located in the first receiving groove. The coupling seat 72 and the locking member 73 are disposed in the second receiving groove. Regardless of whether the tailgate is in the expanded or collapsed locked state, the locking mechanism 70 is receivable in the receiving slot without interfering with the movement of the tailgate.

Specifically, under the driving of the first driving cylinder 53, the first tail plate 51 is folded to move the tongue portion 73b to a position abutting against the buckle 74, and the second driving cylinder 54 drives the second tail plate 52 to fold and drive the cam 71 to rotate, so as to control the up-and-down movement of the tongue portion 73 b. When the cam 71 rotates from a position where the locking portion 73a is away from the rotation center thereof to a position where the locking portion 73a is close to the rotation center thereof, the latch portion 73b swings downward and is latched into the catch 74, and automatic locking is achieved. On the contrary, when the second driving cylinder 54 drives the second tail plate 52 to expand and drive the cam 71 to rotate, the cam 71 rotates from the position of the locking part 73a close to the rotation center to the position of the locking part 73a far away from the rotation center, and the latch part 73b swings upwards and is separated from the buckle 74, so that automatic unlocking is realized; the first and

second drive cylinders

53, 54 then drive the first and

second endgates

51, 52 to spread apart for subsequent loading and unloading operations.

It should be noted that, during the turning of the tail plate from the open state to the locked state, before the locking portion 73a abuts against the locking plane, the first tail plate 51 needs to move to the set position to make the locking member 43 approach the catch, so that the subsequent latch portion 73b abuts against the catch 74. Before the tail plate is turned over from the locking state to the unfolding state, the second tail plate 52 is driven to rotate by the second driving cylinder 54 to realize automatic unlocking. In conclusion, the tail plate of the invention realizes automatic locking and automatic unlocking.

In another embodiment of the present invention, the vehicle limiting mechanism further comprises a link mechanism connecting the first tail plate 51 and the second tail plate 52. Still be provided with the third articulated seat that is close to the first articulated seat setting on first tailboard 51, still be provided with the fourth articulated seat that is close to the articulated seat setting of second on second tailboard 52, link mechanism include one end with first connecting rod 81 that the third articulated seat is connected, and one end with second connecting rod 82 that the fourth articulated seat is connected, the other end of first connecting rod 81 and the other end of second connecting rod 82 are articulated and are provided with the second articulated shaft. The first end plate 51, the second end plate 52, the first link 81, and the second link 82 thus constitute a four-link mechanism. One end of the second driving cylinder 54 is hinged to the hinge point at the middle of the second tail plate 52, and the other end is hinged to the second hinge shaft, so that the first tail plate 51 and the second tail plate 52 can be driven to rotate relatively.

In this embodiment, one end of the first connecting rod 81 or the second connecting rod 82 away from the tail board extends outward to form a supporting portion for abutting against the ground to support the tail board. When the tail plate is completely unfolded and the free end of the second tail plate 52 is erected on the ground, the supporting part rotates downwards and the free end of the supporting part abuts against the ground to play a supporting role, and the structural strength of the first tail plate 51, the second tail plate 52 and the connecting rod mechanism when carrying heavy objects is improved.

The invention further provides an engineering truck or a balance detecting truck, which comprises the vehicle limiting device, and the engineering truck or the balance detecting truck further comprises a frame, a carriage body fixed on the frame and a truck head driving the frame and the carriage body to move.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A vehicle restraint device, comprising:

the base is arranged at the tail part of the vehicle chassis;

2. The vehicle restraint apparatus of claim 1, wherein the drive member is a first hydraulic cylinder having one end hinged to the base and the other end hinged to the lifter plate.

3. The vehicle restraint device according to claim 1, wherein the restraint mechanism further comprises a slider, a connecting rod and a roller arranged on the lifting plate, one end of the connecting rod is hinged on the base, and the other end of the connecting rod is hinged with the slider; the sliding block is connected with the stop lever in a sliding mode, and the roller is in contact with the connecting rod.

4. The vehicle restraint apparatus of claim 2, wherein the lifter plate has a first position and a second position about a hinge point of the vehicle chassis driven by the first hydraulic cylinder, the first position being in a horizontal orientation and the second position being in a tilted orientation.

5. The vehicle restraint apparatus of claim 4, wherein the tailgate further comprises a climbing plate, one end of the climbing plate being hinged to the base and the other end being contactable with the ground; when the lifting plate is at the second position, the climbing plate is in butt joint with the lifting plate.

6. The vehicle limiting device according to claim 5, wherein the climbing plate comprises a first tail plate and a second tail plate, the first tail plate is hinged to the tail of the chassis, the second tail plate is hinged to one end, away from the tail, of the first tail plate, and a first hinge shaft is arranged at the hinge of the first tail plate and the second tail plate; the first tail plate and the carriage are driven to turn over through a first driving cylinder, and the first tail plate and the second tail plate are driven to turn over through the first driving cylinder.

7. The vehicle restraint device of claim 6, further comprising a locking mechanism, the locking mechanism comprising:

when the first tail plate and the second tail plate are in a folded state, the distance between the rotation center of the cam and the locking part is reduced, and the clamping tongue part is clamped into the buckle.

8. The vehicle stop device according to claim 7, wherein the cam has a sector-shaped cross section, the center of rotation of the cam is located near the arc center of the sector, the plane where the straight edge of the sector is located is a locking plane, and the locking plane abuts against the elastic member when the first and second tailgate are in the closed state.

9. A work vehicle, characterized by having a vehicle restraining device according to any one of claims 1 to 6.

10. A balance testing vehicle, characterized in that, has a vehicle limiting device as claimed in any one of claims 1 to 6.