CN211422274U

CN211422274U - Automatic open-type carriage back door

Info

Publication number: CN211422274U
Application number: CN201922052676.6U
Authority: CN
Inventors: 李兆波; 张保成
Original assignee: Shandong Changda Special Vehicle Co ltd
Current assignee: Shandong Changda Special Vehicle Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-09-04
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses an automatic open-type carriage back door, including carriage, back door, latch hook, first power cylinder and power cylinder, the front end of the telescopic link of the first power cylinder of characterized in that articulates in the upper portion of back door, and the middle part of latch hook sets up on the carriage through round pin hub rotation, is fixed with back door lockpin on the lateral wall of back door, and the telescopic link of second power cylinder is articulated mutually with the latch hook, and the second power cylinder realizes opening and locking of back door through the rotation of ordering about the latch hook. The utility model can lock the back door in the bulk cargo transportation process; when the crawler-type self-discharging vehicle unloads materials, the second power cylinder drives the lock hook to rotate to enable the rear door to be opened, the first power cylinder drives the rear door to rotate to enable the rear door to be opened, automatic discharging of the crawler-type self-discharging vehicle is achieved, automatic opening and locking of the rear door under the condition that the carriage is not lifted are achieved, and the crawler-type self-discharging vehicle is applicable to automatic discharging of the crawler-type self-discharging vehicle.

Description

Automatic open-type carriage back door

Technical Field

The utility model relates to an automatic open-type carriage back door, more specifically the theory that says so especially relates to an automatic open-type carriage back door that realizes opening, locking and rotation of back door and open through two power cylinders.

Background

For bulk material trucks, such as sand and gravel trucks, the rear door of the carriage is usually opened automatically in order to avoid the automatic discharge of the bulk material from the open door and to prevent the operator from being injured. For the backward-turning and side-turning dumper, after the front end or one side of the carriage is lifted to a certain height, bulk materials in the carriage can continuously flow out from the opened carriage door under the action of self gravity, and meanwhile, as the carriage is lifted, the carriage door can be provided with a certain opening under the action of self gravity, so that the materials can conveniently flow out. Therefore, the rear door of the existing dump truck is usually arranged on a carriage at the upper end through a rotating shaft, the lower end of the rear door is fixed through a controllable lock catch, when the dump truck needs to unload, the lock catch at the lower end of the carriage door is opened, and the dump truck flows out under the action of gravity of materials after the carriage rises, so that automatic unloading is realized.

However, as the country is in a trend of eliminating backward turning and side turning of the dump truck, the crawler-type and push-plate type dump trucks are developed gradually, the crawler-type and push-plate type dump trucks do not need to lift the carriage, materials are taken out by the transmission of the crawler, or the materials are pushed out by the push plate, and the carriage is always in a horizontal state in the unloading process, so that the rear door of the carriage is required to have the functions of automatically opening and automatically lifting, and only after the carriage is lifted, the bulk materials can be taken out or pushed down.

Disclosure of Invention

The utility model discloses an overcome above-mentioned technical problem's shortcoming, provide one kind through two power cylinders realize the back door open, locking and rotatory automatic open-type carriage back door of opening.

The utility model discloses an automatic open-type carriage back door, which comprises a carriage, a back door, a latch hook, a first power cylinder and a second power cylinder, wherein the upper end of the back door is rotationally fixed at the upper end of the carriage through a back door rotating shaft; the method is characterized in that: the base end of the first power cylinder is hinged to the carriage, the front end of a telescopic rod of the first power cylinder is hinged to the upper part of the rear door, and the first power cylinder drives the rear door to rotate around a rotating shaft of the rear door to be opened or closed; the middle part of the lock hook is rotationally arranged on the lock hook seat through a pin shaft, the lock hook seat is fixed on the carriage, a rear door lock pin matched with the lock hook is fixed on the side wall of the rear door, the base end of the second power cylinder is hinged on the carriage, the telescopic rod of the second power cylinder is hinged with the lock hook, and the second power cylinder realizes the opening and the locking of the rear door by driving the lock hook to rotate.

The utility model discloses an automatic open-type carriage back door, including locking spring, the latch hook comprises U-shaped portion and straight rod portion, and U-shaped portion forms the U-shaped fluting, and the U-shaped portion sells the axle rotation with the junction of straight rod portion and sets up on the latch hook seat, and during the U-shaped fluting of U-shaped portion was gone into in back lock round pin card, the front end of straight rod portion was connected with the carriage through locking spring, and the end of straight rod portion is articulated mutually with the telescopic link of second power cylinder.

The utility model discloses an automatic open-type carriage back door, the both sides of back door all are fixed with L shape back door lifting hook, and back door lifting hook sets up on the carriage through the rotation of back door pivot.

The utility model discloses an automatic open-type carriage back door, first power cylinder is two-way hydraulic cylinder, and the second power cylinder is the cylinder.

The utility model discloses an automatic open-type carriage back door, including gas receiver, gas circuit solenoid valve, oil pump, oil circuit solenoid valve and power cord, the power cord is used for supplying power to gas circuit solenoid valve and oil circuit solenoid valve, and the gas receiver is connected with second power cylinder through the gas circuit solenoid valve, and the oil pump is connected with first power cylinder through the oil circuit solenoid valve.

The utility model discloses an automatic open-type carriage back door, be provided with the automatic discharge system on the frame at carriage place.

The utility model has the advantages that: the utility model discloses an automatic open-type carriage back door, through setting up the telescopic link and hinge in the first power cylinder on the upper portion of back door, and the upper end of back door rotates through the back door pivot and sets up on the carriage, make can realize opening and closing of back door under the drive of first power cylinder; through setting up the latch hook that cooperatees with back lock round pin, and the latch hook is articulated mutually with the telescopic link of second power cylinder for under the drive effect of second power cylinder, can open the back door of locking.

The automatic opening type carriage back door of the utility model can realize the locking function of the carriage back door, so that the carriage back door is in a locking state in the process of transporting bulk goods; when the automatic discharging device is used for discharging materials, the second power cylinder drives the lock hook to rotate to enable the rear door to be opened, the first power cylinder drives the rear door to rotate to enable the rear door to be opened, automatic discharging of the crawler-type dump truck is achieved, after discharging is finished, the first power cylinder drives the rear door to be closed, the second power cylinder drives the lock hook to rotate to enable the rear door to be closed, automatic opening and locking of the rear door under the condition that the carriage is not lifted are achieved, and the automatic discharging device is suitable for automatic discharging of the crawler-type dump truck.

Drawings

Fig. 1 is a schematic structural view of the automatic opening type compartment back door of the present invention;

fig. 2 is a use state diagram of the automatic opening type carriage back door of the utility model.

In the figure: the automatic door locking device comprises a carriage 1, a rear door 2, a first power cylinder 3, a second power cylinder 4, a rear door rotating shaft 5, a locking hook 6, a locking hook seat 7, a rear door locking pin 8, a locking spring 9, a rear door lifting hook 10, an automatic discharging system 11, a U-shaped part 12, a straight rod part 13, an air storage cylinder 14, an air path electromagnetic valve 15 and a power line 16.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1 and 2, the utility model discloses an automatic open-type carriage back door's schematic structure and user state diagram, shown automatic open-type carriage back door comprises carriage 1, back door 2, first power cylinder 3, second power cylinder 4, latch hook 6, latch hook seat 7, locking spring 9, back door lifting hook 10, and opening and locking of back door are realized to second power cylinder 4, and opening and closing of back door are realized to first power cylinder 3. The upper parts of the two ends of the rear door 2 are respectively fixed with a rear door hanging hook 10, and the rear door hanging hooks 10 are arranged at the upper end of the carriage 1 through a rear door rotating shaft 5, so that the rear door 2 can rotate around the rear door rotating shaft 5. The first power cylinder 3 is arranged in a state of inclining backwards, the base end of the first power cylinder 3 is hinged on the carriage 1, the front end of the telescopic rod is hinged on the upper end of the rear door 2, and the first power cylinder 3 adopts a bidirectional cylinder, such as a bidirectional hydraulic oil cylinder. When the telescopic rod of the first power cylinder 3 is controlled to extend, the rear door 2 is driven to rotate upwards around the rear door rotating shaft 5, so that the opening of the rear door is realized; when the telescopic rod driving the first power cylinder 3 is extended and shortened, the rear door 2 can be driven to rotate downwards, and the closing of the rear door is realized.

The lock hook 6 is rotatably arranged on the lock hook seat 7 through a pin shaft, the lock hook seat 7 is fixed on the carriage 1, the lock hook 6 is positioned at the middle lower part of the carriage 1, and the middle lower part of the side surface of the rear door 2 is fixedly provided with a rear door lock pin 8. The shown lock hook 6 consists of a U-shaped part 12 and a straight rod part 13, the U-shaped part 12 is positioned at the rear part of the straight rod part 13, and the joint of the U-shaped part 12 and the straight rod part 13 is hinged on the lock hook seat 7, so that the lock hook 6 rotates on the lock hook seat 7 at a certain angle. The base end of the second power cylinder 4 is hinged on the carriage 1, the telescopic rod of the second power cylinder 4 is hinged at the tail end of the straight rod part 13, and the joint of the straight rod part 13 and the U-shaped part 13 is connected with the carriage 1 through the locking spring 9.

When the rear door 2 is in a closed state, under the action of the tension of the locking spring 9 on the locking hook 6, the locking hook 6 in fig. 2 rotates clockwise, so that the U-shaped groove on the U-shaped part 12 of the locking hook 6 is clamped on the rear door locking pin 8, and the locking of the rear door 2 is realized; the telescopic rod of the second power cylinder 4 is stretched at this time, and the second power cylinder 4 may be a pneumatic cylinder. When the back door needs to be opened, the telescopic rod of the second power cylinder 4 is controlled to retract so as to drive the locking hook in fig. 2 to rotate anticlockwise, so that the U-shaped part 12 of the locking hook 6 is separated from the back door locking pin 8, the back door 2 is in an opened state at the moment, and the locking spring 9 is also stretched.

When the first power cylinder 3 adopts a bidirectional hydraulic oil cylinder and the second power cylinder 4 adopts a cylinder, the carriage 1 is further provided with an air cylinder 14, an air path electromagnetic valve 15, an oil pump, an oil path electromagnetic valve and a power line 15, the power line 15 supplies power to the air path electromagnetic valve 15 and the oil path electromagnetic valve, the air cylinder 14 controls the second power cylinder 4 through the air path electromagnetic valve 15, and the oil pump controls the first power cylinder 3 through the oil path electromagnetic valve. Under the condition that the carriage is a crawler-type dump truck, an automatic discharging system is further arranged on the frame where the carriage 1 is located. The cylinder adopted by the second power cylinder 4 can control the on-off of the electromagnetic valve through a switch in the cab to control the gas in the gas storage cylinder to supply gas to the cylinder, so that the lock hook is opened and locked. The two-way hydraulic oil cylinder adopted by the first power cylinder 3 can drive the oil pump to supply oil to the oil circuit electromagnetic valve through power generated by the power takeoff of the locomotive, and the oil circuit electromagnetic valve supplies oil to the hydraulic two-way oil cylinder under manual or remote control, so that the oil cylinder can reach the purposes of extending and retracting, and the opening and closing functions of the rear door are achieved.

The utility model discloses an automatic working process of open-type carriage back door does:

after the materials are transported to a destination, firstly, a piston rod of a second power cylinder 4 (air cylinder) is controlled to retract through an air path system, so that a lock hook 5 is separated from a rear door lock pin 8 on a rear door 2, the rear door is opened at the moment, and the retraction state of the air cylinder is kept unchanged; then, an expansion rod of a first power cylinder 3 (a bidirectional hydraulic oil cylinder) is controlled to extend through an oil circuit system so as to drive a rear door 2 to rotate around a rear door rotating shaft 5 until the rear door is in an open state, and the rear door is kept in the open state unchanged in the unloading process; after unloading, the telescopic rod of the bidirectional hydraulic oil cylinder is controlled to retract through the oil circuit system until the rear door 2 is in a closed state, finally, the piston rod of the cylinder is not controlled to be in a retracted state, and the locking hook 5 drives the locking hook 6 to be buckled on a rear door locking pin 8 of the rear door 2 under the action of the locking spring 9, so that the rear door is locked.

Claims

1. An automatic opening type carriage back door comprises a carriage (1), a back door (2), a lock hook (6), a first power cylinder (3) and a second power cylinder (4), wherein the upper end of the back door is rotatably fixed at the upper end of the carriage (1) through a back door rotating shaft (5); the method is characterized in that: the base end of the first power cylinder is hinged to the carriage (1), the front end of a telescopic rod of the first power cylinder (3) is hinged to the upper part of the rear door (2), and the first power cylinder drives the rear door to rotate around a rear door rotating shaft (5) to be opened or closed; the middle part of latch hook sets up on latch hook seat (7) through round pin axle rotation, and the latch hook seat is fixed in on carriage (1), is fixed with on the lateral wall of back door with latch hook matched with back door lockpin (8), and the base end of second power cylinder articulates on the carriage, and the telescopic link of second power cylinder is articulated mutually with latch hook (6), and the rotation of second power cylinder through ordering about latch hook (6) realizes opening and locking of back door (2).

2. The automatically opening back door for vehicle compartments as claimed in claim 1, wherein: the automobile door lock comprises a locking spring (9), wherein a lock hook (6) is composed of a U-shaped part (12) and a straight rod part (13), the U-shaped part forms a U-shaped groove, the joint of the U-shaped part and the straight rod part is rotationally arranged on a lock hook seat (7) through a pin shaft, a rear door lock pin (8) is clamped into the U-shaped groove of the U-shaped part, the front end of the straight rod part is connected with a carriage (1) through the locking spring (9), and the tail end of the straight rod part is hinged with a telescopic rod of a second power cylinder (4).

3. The automatically opening compartment back door according to claim 1 or 2, characterized in that: and L-shaped rear door hanging hooks (10) are fixed on both sides of the rear door (2) and are rotatably arranged on the carriage (1) through a rear door rotating shaft (5).

4. The automatically opening compartment back door according to claim 1 or 2, characterized in that: the first power cylinder (3) is a bidirectional hydraulic oil cylinder, and the second power cylinder (4) is an air cylinder.

5. The automatically opening back door for vehicle compartments as claimed in claim 4, wherein: the power supply system comprises an air storage cylinder (14), an air path electromagnetic valve (15), an oil pump, an oil path electromagnetic valve and a power supply line (16), wherein the power supply line is used for supplying power to the air path electromagnetic valve and the oil path electromagnetic valve, the air storage cylinder is connected with a second power cylinder (4) through the air path electromagnetic valve, and the oil pump is connected with a first power cylinder (3) through the oil path electromagnetic valve.

6. The automatically opening compartment back door according to claim 1 or 2, characterized in that: and an automatic discharging system (11) is arranged on the frame where the carriage (1) is located.