CN216659701U - Hydraulic latch hook device for rear door of dump truck - Google Patents
Hydraulic latch hook device for rear door of dump truck Download PDFInfo
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- CN216659701U CN216659701U CN202122658946.5U CN202122658946U CN216659701U CN 216659701 U CN216659701 U CN 216659701U CN 202122658946 U CN202122658946 U CN 202122658946U CN 216659701 U CN216659701 U CN 216659701U
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- rear door
- bottom plate
- hydraulic
- fixedly connected
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Abstract
The utility model discloses a hydraulic latch hook device for a rear door of a dump truck, which comprises a carriage bottom plate and a rear door, wherein a hydraulic lock is fixedly connected to the front surface of the carriage bottom plate, the rear door is hinged to the top of the carriage bottom plate through a hinge, a bidirectional oil cylinder is fixedly connected to the front surface of the carriage bottom plate and positioned at the top of the hydraulic lock, two output ends of the bidirectional oil cylinder penetrate through a connecting shaft, and two ends of the bidirectional oil cylinder are rotatably connected with latch hooks through the connecting shaft. The locking device has the advantages that the bottoms of the two lock hooks are pushed to respectively move towards the left side and the right side, the middle positions of the lock hooks are rotationally connected with the mounting seat through the mounting shaft, so that the tops of the two lock hooks move in the opposite direction, the locking blocks on the rear door are locked, the locking wheels assist the lock hooks to be locked with the locking blocks, the locking sealing of the rear door is guaranteed, the hydraulic locking valves are adopted in the hydraulic aspect to guarantee the locking oil pressure, the lock hooks are prevented from loosening, the locking effect is good, and the urban road environment is guaranteed.
Description
Technical Field
The utility model relates to the field of a rear door lock hook device of a dump truck, in particular to a hydraulic lock hook device of a rear door of the dump truck.
Background
The dump truck refers to a vehicle which can unload cargos by hydraulic or mechanical lifting, and is also called a dump truck. The dumper consists of parts such as an automobile chassis, a hydraulic lifting mechanism, a cargo compartment, a power takeoff device and the like, and the dumper is often combined with engineering machinery such as an excavator, a loader, a belt conveyor and the like in civil engineering to form a loading, transporting and unloading production line for loading, unloading and transporting earthwork, gravel and bulk materials.
The existing rear door of the dump truck is only locked by manually locking a single lock catch, and if a driver forgets to lock the rear door, the condition that the rear door is not locked occurs, so that the condition that the rear door is dripped, scattered and leaked in the transportation process of the dump truck occurs, and the urban road environment is influenced.
Therefore, it is necessary to provide a hydraulic latch hook device for a rear door of a dump truck to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hydraulic latch hook device for a rear door of a dump truck, which aims to solve the problem that the condition that the rear door is not locked due to lock missing and lock forgetting of manually locking a vehicle door in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a hydraulic latch hook device for a rear door of a dump truck comprises a carriage bottom plate and a rear door, wherein a hydraulic lock is fixedly connected with the front surface of the carriage bottom plate, the back door is hinged with the top of the carriage bottom plate through a hinge, the front surface of the carriage bottom plate and the top of the hydraulic lock are fixedly connected with a bidirectional oil cylinder, two output ends of the bidirectional oil cylinder penetrate through a connecting shaft, two ends of the bidirectional oil cylinder are both rotatably connected with a locking hook through the connecting shaft, the front surface of the back door is fixedly connected with a locking block, the front surface of the carriage bottom plate is fixedly connected with a mounting seat which is positioned right above the bidirectional oil cylinder, the positive both sides of mount pad all rotate to be connected with the installation axle, the positive both sides of mount pad all are through two the installation axle respectively with two latch hook rotate to be connected, two the top of latch hook all inlays and is equipped with the fixed axle, the fixed axle rotates with the latch hook to be connected.
Preferably, the tops of the two lock hooks are rotatably connected with locking wheels through fixed shafts.
Preferably, the normal close limit air valve is fixedly connected to the front face of the carriage bottom plate and the bottom of the bidirectional oil cylinder.
Preferably, the other end of the connecting shaft is fixedly connected with a transmission block, and the front surface of the transmission block is fixedly connected with a locking nut.
Preferably, an adjusting bolt penetrates through the locking nut.
Compared with the prior art, the utility model has the beneficial effects that:
(1) this tipper back door fluid pressure type latch hook device, through opening the hydraulic pressure lock, start the double-box hydro-cylinder, two output of two-way hydro-cylinder stretch out simultaneously, promote two connecting axles toward the left and right sides, thereby promote the bottom of two latch hooks, move to the left and right sides respectively, because the latch hook middle part position is connected with the mount pad rotation through the installation axle, make the top relative direction of two latch hooks to remove, thereby lock the locking piece locking on the back door, the supplementary latch hook of locking wheel locks soon with the locking, the locking of guarantee back door is sealed, adopt hydraulic pressure locking valve to guarantee the locking oil pressure in the aspect of the hydraulic pressure, avoid the latch hook not hard up, locking effect is good, guarantee for urban road environment provides.
(2) This tipper back door fluid pressure type latch hook device, through the shrink of two-way hydro-cylinder, an output of hydro-cylinder drives the transmission piece and moves right, be close to the spacing pneumatic valve of normal close, when the transmission piece moves continuously, adjusting bolt moves along with this transmission piece, can push down the valve rod on the spacing pneumatic valve of normal close, realize the switching of the spacing pneumatic valve of normal close and adopt two-way hydro-cylinder as the execution unit, drive opening and closing of latch hook through the flexible of two-way hydro-cylinder, for preventing that the driver from lifting the packing box under back door hydraulic latch hook locking state, adopt the mode of establishing ties the spacing pneumatic valve of normal close in big case lifting gas circuit, guarantee that the driver can lift the big case under the back door is not locked by the latch hook locking state, stop driver misoperation through the spacing pneumatic valve of normal close, the circumstances that the goods spilled that lift the big case and lead to under the circumstances that the back door is not opened is avoided.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of a hydraulic latch hook device for a rear door of a dump truck according to the present invention;
fig. 2 is a schematic structural operation view of the shackle shown in fig. 1.
In the figure: 1. hydraulic locking; 2. a bidirectional oil cylinder; 3. a latch hook; 4. a rear door; 5. a normally closed limiting air valve; 6. adjusting the bolt; 7. locking the nut; 8. a connecting shaft; 9. installing a shaft; 10. a fixed shaft; 11. locking wheels; 12. a locking block; 13. a bed floor; 14. a mounting seat; 15. and a transmission block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention is shown: a hydraulic latch hook device for a rear door of a dump truck comprises a carriage bottom plate 13 and a rear door 4, wherein a hydraulic lock 1 is fixedly connected to the front side of the carriage bottom plate 13, the rear door 4 is hinged to the top of the carriage bottom plate 13 through a hinge, a bidirectional oil cylinder 2 is fixedly connected to the front side of the carriage bottom plate 13 and positioned at the top of the hydraulic lock 1, two output ends of the bidirectional oil cylinder 2 penetrate through a connecting shaft 8, two ends of the bidirectional oil cylinder 2 are both rotatably connected with latch hooks 3 through the connecting shaft 8, a locking block 12 is fixedly connected to the front side of the rear door 4, a mounting seat 14 is fixedly connected to the front side of the carriage bottom plate 13 and positioned right above the bidirectional oil cylinder 2, mounting shafts 9 are rotatably connected to two sides of the front side of the mounting seat 14, two sides of the front side of the mounting seat 14 are both rotatably connected with the two latch hooks 3 through the two mounting shafts 9, and a fixing shaft 10 is embedded at the tops of the two latch hooks 3, the fixed shaft 10 is rotatably connected with the lock hook 3, and the hydraulic lock 1 is used for locking and controlling oil pressure in the bidirectional oil cylinder 2.
The top of two latch hooks 3 all is connected with locking wheel 11 through fixed axle 10 rotation, locking wheel 11 assists latch hook 3 and locking piece 12 locking.
The front surface of the carriage bottom plate 13 and the bottom of the bidirectional oil cylinder 2 are fixedly connected with a normally closed limiting air valve 5, and a mode that the normally closed limiting air valve 5 is connected in series in a large box lifting air path is adopted, so that a driver can only lift the large box when the rear door 4 is not locked by the lock hook 3.
The other end of the connecting shaft 8 is fixedly connected with a transmission block 15, and the front face of the transmission block 15 is fixedly connected with a locking nut 7.
An adjusting bolt 6 penetrates through the locking nut 7, and the adjusting bolt 6 and a valve rod on the normally closed limiting air valve 5 are located at the same horizontal position.
The working principle is as follows: when the double-box oil cylinder is used, the hydraulic lock 1 is opened, the double-box oil cylinder 2 is started, two output ends of the double-box oil cylinder 2 simultaneously extend out, two connecting shafts 8 are pushed to the left side and the right side, so that the bottoms of two lock hooks 3 are pushed to move to the left side and the right side respectively, the middle positions of the lock hooks 3 are rotationally connected with the mounting seat 14 through the mounting shafts 9, so that the tops of the two lock hooks 3 move in opposite directions, so that the locking block 12 on the rear door 4 is locked, the locking wheel 11 assists the lock hooks 3 to be locked with the locking block 12, the locking sealing of the rear door 4 is ensured, the hydraulic lock 1 is used for locking the valve to ensure the locking oil pressure, the lock hooks 3 are prevented from loosening, when the double-box oil cylinder 2 contracts, one output end of the oil cylinder 2 drives the transmission block 15 to move rightwards to be close to the normally-closed limiting air valve 5, when the transmission block 15 continuously moves, the adjusting bolt 6 moves along with the transmission block 15, so as to press the valve rod on the normally-closed limiting air valve 5, realize the switching of pneumatic valve and adopt two-way hydro-cylinder 2 as the execution unit, drive opening and closing of latch hook 3 through the flexible of two-way hydro-cylinder 2, for preventing that the driver from lifting the packing box under 4 hydraulic latch hook 3 locking states of back door, adopt the mode of establishing ties spacing pneumatic valve 5 of normal close in big case lifting gas circuit, guarantee that the driver can only lift big case under 4 back doors are not by latch hook 3 locking states.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a tipper back door fluid pressure type latch hook device, includes carriage bottom plate (13) and back door (4), its characterized in that: the hydraulic lock is fixedly connected with the front side of the carriage bottom plate (13), the rear door (4) is hinged to the top of the carriage bottom plate (13) through a hinge, the two-way oil cylinder (2) is fixedly connected with the front side of the carriage bottom plate (13) and is positioned at the top of the hydraulic lock (1), connecting shafts (8) penetrate through two output ends of the two-way oil cylinder (2), two ends of the two-way oil cylinder (2) are rotatably connected with locking hooks (3) through the connecting shafts (8), the locking block (12) is fixedly connected with the front side of the rear door (4), a mounting seat (14) is fixedly connected with the front side of the carriage bottom plate (13) and is positioned right above the two-way oil cylinder (2), mounting shafts (9) are rotatably connected with the two mounting shafts (9), the two front sides of the mounting seat (14) are respectively and rotatably connected with the two locking hooks (3) through the two mounting shafts (9), and the top parts of the two locking hooks (3) are embedded with fixing shafts (10), and the fixing shafts (10) are rotationally connected with the locking hooks (3).
2. The hydraulic latch hook device for the rear door of the dump truck according to claim 1, wherein: the tops of the two lock hooks (3) are rotatably connected with locking wheels (11) through fixed shafts (10).
3. The hydraulic latch hook device for the rear door of the dump truck according to claim 1, wherein: and a normally closed limiting air valve (5) is fixedly connected to the front surface of the carriage bottom plate (13) and is positioned at the bottom of the two-way oil cylinder (2).
4. The hydraulic latch hook device for the rear door of the dump truck according to claim 1, wherein: and the other end of the connecting shaft (8) is fixedly connected with a transmission block (15), and the front surface of the transmission block (15) is fixedly connected with a locking nut (7).
5. The hydraulic latch hook device for the rear door of the dump truck according to claim 4, wherein: an adjusting bolt (6) penetrates through the locking nut (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122658946.5U CN216659701U (en) | 2021-11-02 | 2021-11-02 | Hydraulic latch hook device for rear door of dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122658946.5U CN216659701U (en) | 2021-11-02 | 2021-11-02 | Hydraulic latch hook device for rear door of dump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216659701U true CN216659701U (en) | 2022-06-03 |
Family
ID=81787556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122658946.5U Active CN216659701U (en) | 2021-11-02 | 2021-11-02 | Hydraulic latch hook device for rear door of dump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216659701U (en) |
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2021
- 2021-11-02 CN CN202122658946.5U patent/CN216659701U/en active Active
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