Novel hydraulic self-locking parking device

Abstract

The utility model relates to the technical field of hydraulic pressure, and provides a novel hydraulic self-locking parking device which comprises a machine frame, two hydraulic driving motors are installed on the two sides of the machine frame respectively, driving wheels are arranged on output shafts of the two hydraulic driving motors in a sleeved mode, a connecting crawler belt is arranged on the peripheral faces of the two driving wheels in a sleeved mode, and the connecting crawler belt is connected with the hydraulic driving motors in a sleeved mode. A brake chuck is welded to the driving wheel, a plurality of clamping grooves which are evenly distributed in an annular array mode are formed in the outer ring of the brake chuck, and through arrangement of structures such as a brake clamping block and the brake chuck, when equipment is stopped, a reset spring in a spring rebound oil cylinder is slowly reset, the brake clamping block enters the clamping grooves of the brake chuck again, and therefore the equipment can be stopped. Double locking of mechanical structure locking and hydraulic structure locking is achieved, the device is suitable for the working condition of high load, and the safety and reliability of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic technology field, specifically, relate to a novel hydraulic self -locking parking device. BACKGROUND

[0002] At present, with the continuous development of various engineering machinery, more and more hydraulic drive elements are widely used, when these hydraulic drive elements are in the state of shutdown or standby, influenced by topography, working condition or self gravity and other factors, these hydraulic drive elements will bear certain load, thereby passively make corresponding action, and safety hazard is caused. In order to solve this problem, technical personnel installs check valve on the inlet and outlet oil pipeline of these hydraulic drive elements, when these hydraulic drive elements lose power input, check valve closes, and self locking is realized.

[0003] But the self locking parking device in prior art has the following problems:

[0004] 1, in prior art, only check valve is relied on to realize self locking function, and this single locking mode may have safety hazard when facing high load working condition, and it is not safe and reliable, because of lacking additional locking mechanism, such as the auxiliary of mechanical structure or hydraulic structure, the system can not be locked stably under high pressure, and the accident risk is increased.

[0005] 2, in prior art, the parking state of machine usually needs to be manually operated by construction personnel to control, which means that there is lack of automatic mechanism linked with braking device on inlet and outlet oil pipeline, therefore, when the machine walks, the parking state cannot be automatically cancelled, and when the machine stops, it also cannot automatically enter the parking state, and this manual operation not only increases the burden of construction personnel, but also can cause safety hazard due to untimely operation or mistake. UTILITY MODEL CONTENTS

[0006] The utility model provides a novel hydraulic self locking parking device, solve the problem that general only check valve is arranged to lock in related art, when the load is larger, it cannot be locked, in addition, the parking of prior art cannot be automatically locked, and the practicability is poor.

[0007] The technical scheme of the utility model is as follows:

[0008] In order to realize the above object, the utility model provides the following technical scheme: a novel hydraulic self locking parking device, including the frame, two hydraulic drive motors are installed on the both sides of the frame, the output shaft of two hydraulic drive motors is all sleeved with drive wheel, the outer periphery of two drive wheels is respectively sleeved with connecting track.

[0009] Preferably, the drive wheel is welded with brake chuck, and the outer ring of the brake chuck is provided with a plurality of annular array uniformly distributed clamping grooves.

[0010] Preferably, one side of the rack is welded with a mounting rod, a spring rebound oil cylinder is movably connected inside the mounting rod, a piston rod is arranged inside the spring rebound oil cylinder, a movable block is movably connected to the top of the piston rod, a connecting block is movably connected to the movable block, a brake block is fixedly connected to the connecting block through screws, and the brake block and the brake block are the same in shape and size.

[0011] Preferably, a first oil way and a second oil way are arranged on the hydraulic drive motor, a double hydraulic control one-way valve is connected to the first oil way and the second oil way, an output end of the double hydraulic control one-way valve is connected with a shuttle valve, and an output end of the shuttle valve is connected to an input end of the spring rebound oil cylinder.

[0012] Preferably, a reset spring is arranged between the piston rod and the bottom wall of the spring rebound oil cylinder.

[0013] The working principle and beneficial effects of the utility model are as follows:

[0014] 1. The utility model discloses a brake block and a brake chuck are arranged, when the equipment stops, the reset spring in the spring rebound oil cylinder slowly resets, the brake block reenters the brake chuck, mechanical structure locking and hydraulic structure locking are realized, the safety and reliability of the equipment are improved.

[0015] 2. The utility model discloses a brake chuck and a hydraulic drive motor are arranged, when the oil way loses oil pressure, the equipment can be automatically locked, manual locking / unlocking is not needed, the labor burden of personnel is reduced, and the universality of the equipment is increased. DRAWINGS

[0016] The utility model will be explained in further detail in connection with the drawings and specific embodiments.

[0017] Fig. 1 It is the whole structure schematic view of the utility model;

[0018] Fig. 2 It is the side sectional view of the utility model;

[0019] Fig. 3 It is the hydraulic system structure schematic view of the utility model.

[0020] In the drawing: 1, rack;2, hydraulic drive motor;3, drive wheel;4, connecting caterpillar belt;5, brake chuck;6, brake block;7, spring rebound oil cylinder;8, movable block;9, brake block;10, first oil way;11, second oil way;12, double hydraulic control one-way valve;13, shuttle valve. SPECIFIC EMBODIMENTS

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described below in combination with the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor are involved in the protection scope of the utility model.

[0022] As shown in the figure, Figs. 1-2 The embodiment proposes a new hydraulic self-locking parking device, which comprises a rack 1, two hydraulic drive motors 2 are respectively installed on the two sides of the rack 1, a drive wheel 3 is sleeved on the output shaft of each hydraulic drive motor 2, and a connecting track 4 is sleeved on the outer circumferential surface of each drive wheel 3.

[0023] As shown in the figure, Figs. 1-2 A brake chuck 5 is welded on the drive wheel 3, and a plurality of clamping grooves 6 are evenly arranged in the form of annular array on the outer ring of the brake chuck 5.

[0024] As shown in the figure, Figs. 1-2 A mounting rod is welded on one side of the rack 1, a spring rebound oil cylinder 7 is movably hinged in the mounting rod, a piston rod is arranged in the spring rebound oil cylinder 7, a movable block 8 is movably hinged on the top of the piston rod, a connecting block is movably hinged on the movable block 8, a brake block 9 is fixedly connected to the connecting block through screws, and the shape and size of the clamping groove 6 and the brake block 9 are the same.

[0025] A first oil way 10 and a second oil way 11 are arranged on the hydraulic drive motor 2, a double hydraulic control one-way valve 12 is connected to the first oil way 10 and the second oil way 11, an output end of the double hydraulic control one-way valve 12 is connected to a shuttle valve 13, and an output end of the shuttle valve 13 is connected to an input end of the spring rebound oil cylinder 7.

[0026] A reset spring is arranged between the piston rod and the bottom wall of the spring rebound oil cylinder 7.

[0027] In the embodiment, when the equipment needs to move forward, the first oil way 10 is filled with oil and the second oil way 11 is discharged through an external hydraulic valve, and in this process, the double hydraulic control one-way valve 12 controls the upper oil inlet of the shuttle valve 13 to be opened and the lower oil inlet to be closed, the hydraulic oil enters the upper cavity of the spring reset oil cylinder 7, the internal piston moves, the reset spring is compressed, the piston rod moves to the right, the movable block 8 moves to the right, the brake block 9 is separated from the inside of the clamping groove 6 through the connecting block, the restriction of the brake chuck 5 is released, and the oil way passes through the hydraulic drive motor 2 to drive one of the drive wheels 3 to rotate, the drive wheel 3 drives the connecting track to rotate in the forward direction, and the other side is the same, the two tracks rotate in the forward direction at the same time, and then the whole machine rack 1 moves forward.

[0028] When the device needs to retreat, the hydraulic valve outside imports oil from the first oil path 10, and exports oil from the second oil path 11, in this process, the double hydraulic control check valve 12 controls the shuttle valve 13 to open the lower oil inlet and close the upper oil inlet, the entering hydraulic oil compresses the reset spring, thereby driving the movable block 8 to move to the right, the movable block 8 drives the brake block 9 to separate from the inside of the clamping groove 6 through the connecting block, releases the limiting effect on the brake chuck 5, and drives one of the driving wheels 3 to rotate through the hydraulic drive motor 2 along with the oil path, the driving wheel 3 drives the connecting track 4 to rotate in the retreat direction, the other side is the same, the two tracks rotate in the retreat direction at the same time, thereby driving the whole machine frame 1 to move backward;

[0029] When the device needs to stop, the hydraulic valve is closed, the first oil path 10 and the second oil path 11 are connected to the oil tank, at this time, the double hydraulic control check valve 12 is closed, and the shuttle valve 13 also has no oil pressure input, at this time, the compressed reset spring in the spring rebound oil cylinder 7 slowly resets until the reset, the hydraulic oil in the upper cavity of the spring rebound oil cylinder 7 is pushed out by the piston, flows into the first oil path 10 or the second oil path 11 through the upper oil inlet or the lower oil inlet of the shuttle valve 13, and finally returns to the oil tank, in this process, the brake block 9 reenters the clamping groove 6 in the inside of the brake chuck 5, limits the brake chuck 5, realizes mechanical structure locking and hydraulic structure locking double locking, thereby being applicable to the working condition with higher load, being more safe and reliable, in addition, the device can be automatically locked when the oil path loses oil pressure, without manual locking / unlocking, thereby realizing reducing the labor burden of personnel and increasing the universality.

[0030] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A new type of hydraulic self-locking parking device, characterized in that, Including frame (1), two hydraulic drive motors (2) are installed on both sides of the frame (1) respectively, the output shaft of two hydraulic drive motors (2) is sleeved with drive wheel (3) respectively, the outer circumferential surface of two drive wheels (3) is sleeved with connecting track (4) respectively.

2. A new type of hydraulic self-locking parking device according to claim 1, characterized in that, The drive wheel (3) is welded with brake chuck (5), the outer ring of brake chuck (5) is provided with a plurality of annular arrayed clamping grooves (6).

3. A new type of hydraulic self-locking parking device according to claim 2, characterized in that, One side of the frame (1) is welded with mounting rod, the inside of the mounting rod is movably hinged with spring rebound oil cylinder (7), the inside of the spring rebound oil cylinder (7) is provided with piston rod, the top of the piston rod is movably hinged with movable block (8), the movable block (8) is movably hinged with connecting block, the connecting block is fixedly connected with brake block (9) through screw, the shape and size of the clamping groove (6) and the brake block (9) are same.

4. A novel hydraulic self-locking parking device according to claim 3, characterized in that, The hydraulic drive motor (2) is provided with first oil way (10) and second oil way (11), the first oil way (10) and the second oil way (11) are commonly connected with double hydraulic control one-way valve (12), the output end of the double hydraulic control one-way valve (12) is connected with shuttle valve (13), the output end of the shuttle valve (13) is connected at the input end of spring rebound oil cylinder (7).

5. A new type of hydraulic self-locking parking device according to claim 4, characterized in that, The reset spring is commonly installed between the piston rod and the bottom wall of the spring rebound oil cylinder (7).

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