CN211995595U - Hydraulic direct-pushing brake device for coal mine explosion-proof storage battery electric locomotive - Google Patents
Hydraulic direct-pushing brake device for coal mine explosion-proof storage battery electric locomotive Download PDFInfo
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- CN211995595U CN211995595U CN202020561273.4U CN202020561273U CN211995595U CN 211995595 U CN211995595 U CN 211995595U CN 202020561273 U CN202020561273 U CN 202020561273U CN 211995595 U CN211995595 U CN 211995595U
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Abstract
The invention discloses a hydraulic direct-pushing brake device for a coal mine explosion-proof storage battery electric locomotive, which comprises a locomotive box body, a wheel pair, a bearing seat, a hydraulic cylinder and a brake part, wherein the bearing seat is assembled at two end parts of a wheel shaft of the wheel pair, the wheel pair and the bearing seat are assembled and then are assembled on the locomotive box body together, the hydraulic cylinder is assembled on the locomotive box body, and the brake part is connected with the hydraulic cylinder. The hydraulic cylinder directly drives the braking part to compress and brake or release the brake for the wheels of the wheel pair through telescopic action, and has the advantages of simple and practical structure, stable braking, large hydraulic braking torque, high speed and good effect.
Description
Technical Field
The invention relates to the technical field of explosion-proof electric locomotives for coal mines, in particular to a hydraulic direct-pushing brake device for an explosion-proof storage battery electric locomotive for a coal mine.
Background
In coal mine transportation equipment, an explosion-proof storage battery electric locomotive is the main equipment for coal mine transportation in China at present and is mainly used for hauling a mine car group, transporting minerals, equipment and personnel. In a coal mine environment, the working environment is complex, air is moist, the space of a roadway is small, the running track of a locomotive is narrow, so that the overall dimension of the electric locomotive is small, parts such as an anti-explosion electric control part, a walking driving part, a braking part, a sand scattering part and the like which are necessary for the locomotive are required to be arranged in a box body with limited space, the locomotive is crowded, driving operation is uncomfortable, maintenance is inconvenient, and the improvement of the braking performance of the electric locomotive are very difficult under the condition of crowding in the existing locomotive.
At present, the braking modes commonly used in explosion-proof electric locomotives for coal mines are roughly divided into three types: mechanical braking, electrical braking, air braking. Although each of the three braking methods has advantages, in practical use, there are many disadvantages.
The mechanical brake is that the hand wheel rotates to drive the force-dividing arm, the connecting rod, the transmission rod, the adjusting screw and the like to transmit the brake force to the brake block, so that the brake block presses the friction wheel to achieve the brake effect. This braking mode: 1. the transmission parts are more, the structure is complex and heavy, and corresponding fault points are more; 2. the idle stroke distance is large, the hand wheel needs to rotate 2-3 circles to brake, the braking reaction is slow, the braking distance is long, and the braking efficiency is low; 3. the labor intensity of manual operation is high, the work is hard, and the braking force is too soft, so that the braking torque is small; 4. the mechanical transmission synchronism is poor, the corresponding brake blocks on the two sides need to be adjusted repeatedly, the friction is not uniform, the brake is unbalanced, the brake effect and reliability are poor, and the phenomena of friction shake, friction noise and the like can occur; 5. a braking hand wheel needs to be arranged in the cab, so that the cab space is occupied, and the driving comfort is reduced; 6. can only be used in low-speed running of the locomotive and can not meet the requirement of emergency braking of the locomotive. The mode has low reliability in actual use and has great potential safety hazard.
The electric brake is a brake that generates a braking force by electric control of the motor. The mode needs to be connected with a power supply, can only be used as normal braking during the operation of the locomotive, and needs other braking modes to be matched for use during emergency braking, otherwise, the emergency braking effect is poor, and the motor is greatly damaged; when an electric fault occurs in the running of the electric locomotive, the electric brake fails; the parking brake cannot be provided when the vehicle is parked because there is no power supply.
The air brake is that a special motor drives an air compressor to supply air to an air cylinder, and the air cylinder drives a brake block to perform friction brake with wheels. The mode has large noise, high cost, large volume and high assembly requirement; the device is easy to damage in use, needs frequent maintenance and repair, and wastes a large amount of manpower and material resources; the braking is not stable, the braking torque is not controllable, and the brake can not be normally used under ordinary conditions.
Because of the restriction in the aspect of the space structure in the electrified locomotive and electrical control, hydraulic braking uses less in mining electric locomotive especially coal mine electric locomotive, and the hydraulic braking who uses in current coal mine locomotive has: 1. the structure adopts a manual or pedal mode, so that the operation is labor-consuming, sufficient brake oil is not available, the braking force is small, the braking speed is low, and the structure can only be applied to electric locomotives with small tonnage, such as 2.5T and the like; 2. the hydraulic cylinder is utilized to drive the friction plate to clamp and assemble the brake disc on the wheel shaft of the locomotive, the structure only exists in the prior theoretical technology, the installation space of the brake disc and the hydraulic cylinder is narrow and small due to the limitation of the space and the position in the locomotive in actual use, and the mode is basically in an unrealizable state.
Disclosure of Invention
To the problem that exists among the prior art, this patent discloses a colliery explosion-proof battery is hydraulic pressure straight-pushing arresting gear for electric locomotive, and the device braking is steady, and braking torque is big, fast, effectual.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that: the utility model provides a colliery explosion-proof battery is hydraulic pressure straight-pushing braking device for electric locomotive, includes locomotive box 1, wheel pair 2, bearing frame 3, pneumatic cylinder 4, braking piece 5, bearing frame 3 equipment in the wheel shaft both ends of wheel pair 2, wheel pair 2 with the assembly of bearing frame 3 back is adorned together on the locomotive box 1, its characterized in that: the hydraulic cylinder 4 is assembled on the locomotive box body 1, the braking part 5 is connected with the hydraulic cylinder 4, and the hydraulic cylinder 4 directly drives the braking part 5 to compress and brake or release the brake on the wheels of the wheel pair 2 through telescopic motion.
The hydraulic direct-pushing brake device for the coal mine explosion-proof storage battery electric locomotive is further characterized in that: the hydraulic cylinder 4 is of a pressure liquid driving structure, when liquid pressure in each cavity in the hydraulic cylinder is different, the pressure liquid drives the hydraulic cylinder to stretch and retract, and the hydraulic cylinder drives the braking piece to compress and brake or release braking on wheels of the wheel pair.
The hydraulic direct-pushing brake device for the coal mine explosion-proof storage battery electric locomotive is further characterized in that: the hydraulic cylinder 4 is of a spring release retraction structure, the spring is arranged in a rod cavity of the hydraulic cylinder, when pressure liquid is conveyed into a rodless cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder extends out, the spring in the rod cavity is compressed, and the hydraulic cylinder drives a braking part to compress and brake wheels of a wheel pair; when the liquid pressure in the rodless cavity of the hydraulic cylinder is unloaded, the spring compressed in the rod cavity releases the elastic force to enable the piston rod of the hydraulic cylinder to retract, and the hydraulic cylinder drives the braking piece to be separated from the wheel of the wheel pair to release braking.
The hydraulic direct-pushing brake device for the coal mine explosion-proof storage battery electric locomotive is further characterized in that: the hydraulic cylinder 4 is of a spring release extension structure, a spring is arranged in a rodless cavity of the hydraulic cylinder or on a piston rod outside the hydraulic cylinder, when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, the piston rod of the hydraulic cylinder retracts, the spring in the rodless cavity or the spring on a piston rod outside the cylinder body is compressed, and the hydraulic cylinder drives a braking part to be separated from wheels of the wheel pair to release braking; when the liquid pressure in the rod cavity of the hydraulic cylinder is unloaded, the compressed spring in the rodless cavity or on the piston rod outside the cylinder body releases the elastic force to extend the piston rod of the hydraulic cylinder, and the hydraulic cylinder drives the braking part to compress and brake the wheels of the wheel pair.
Has the advantages that:
1. the invention directly drives the braking part to act by the hydraulic cylinder, has simple structure, small volume and convenient assembly and maintenance, can save the existing mechanical hand wheel braking mechanism, and has low operation intensity and high driving comfort.
2. The device has the advantages of small idle stroke distance between the braking part and the wheels, high hydraulic braking reaction speed, large braking torque, short braking distance and high reliability, can realize emergency braking during driving, and reduces the accident rate of industrial accidents caused by unreliable braking and potential safety hazards caused by the unreliable braking.
3. The hydraulic cylinder in the device can realize self-balance and synchronous braking of wheel braking, the braking force is average, and the phenomenon of partial braking cannot be caused.
4. The device can keep constant liquid pressure through a hydraulic cylinder to drive a braking part to press and brake wheels of a wheel pair all the time, so that parking brake of the locomotive is realized; the braking part can be driven to always press and brake the wheels of the wheel pair through the elastic force released by the spring so as to realize parking braking when the locomotive is parked, and the safety and the reliability are high.
Drawings
Fig. 1 is a schematic structural diagram (double-piston-rod-cylinder structure) of a hydraulic direct-pushing brake device for a coal mine explosion-proof storage battery electric locomotive.
Fig. 2 is a schematic structural diagram of a hydraulic direct-pushing brake device for a coal mine explosion-proof storage battery electric locomotive (a single-piston-rod cylinder structure: a middle reverse direct-pushing brake structure in fig. 2.1, a same-direction direct-pushing brake structure in fig. 2.2, and a two-side reverse direct-pushing brake structure in fig. 2.3).
Fig. 3 is a schematic structural diagram of the hydraulic cylinder (wherein fig. 3.1 is a double-piston-rod cylinder with a built-in spring, fig. 3.2 is a double-piston-rod cylinder with an external spring, fig. 3.3 is a single-piston-rod cylinder with a built-in spring, and fig. 3.4 is a single-piston-rod cylinder with an external spring).
In the figure, 1 is a locomotive box body; 2 is a wheel pair; 3 is a bearing seat; 4 is a hydraulic cylinder; and 5 is a braking part.
Detailed Description
The technical solution of the present invention is further described by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1. The hydraulic direct-pushing brake device for the coal mine explosion-proof storage battery electric locomotive has a structural schematic diagram (a double-piston-rod cylinder structure). The hydraulic direct-pushing braking device for the coal mine explosion-proof storage battery electric locomotive comprises a locomotive box body 1, a wheel pair 2, a bearing seat 3, a hydraulic cylinder 4 and a braking part 5, wherein the bearing seat 3 is assembled at two ends of a wheel shaft of the wheel pair 2, the wheel pair 2 and the bearing seat 6 are assembled on the locomotive box body 7 together, the hydraulic cylinder 4 is a double-piston-rod hydraulic cylinder which is assembled on the locomotive box body 7, two ends of a double-piston rod of the hydraulic cylinder 4 are connected with the two braking parts 5, the position of each braking part 5 corresponds to a wheel of the wheel pair 2, and the hydraulic cylinder 4 directly drives the braking part 5 to compress and brake or release braking on.
As shown in fig. 2. The hydraulic direct-push brake device for the coal mine explosion-proof storage battery electric locomotive has a structural schematic diagram (a single-piston-rod cylinder structure). The hydraulic brake device comprises a bearing seat 6, a wheel pair 2, a brake piece 5, a hydraulic cylinder 4, a single piston rod hydraulic cylinder, a brake piece 5, a brake piece and a brake piece, wherein the bearing seat 6 is assembled at two ends of a wheel shaft of the wheel pair 2, the wheel pair 2 and the bearing seat 6 are assembled on a locomotive box body 1, the hydraulic cylinder 4 is two single piston rod hydraulic cylinders which are arranged side by side and assembled on the locomotive box body 1, the piston rod end of the hydraulic cylinder 4 is connected with the brake piece 5, the brake piece 5 corresponds to wheels of the wheel pair.
Wherein: FIG. 2.1 shows that the hydraulic cylinders are connected with braking members and arranged on a locomotive box body between two wheel pairs, and the two hydraulic cylinders drive the braking members to reversely compress and brake wheels of the wheel pairs; FIG. 2.2 shows that the hydraulic cylinders are connected with the braking members and arranged on the locomotive case body at the same side of the two wheel pairs, and the two hydraulic cylinders drive the braking members to press and brake the wheels of the wheel pairs in the same direction; fig. 2.3 shows that the hydraulic cylinders are connected with the braking parts and arranged on the locomotive cases at two sides of the two wheel pairs, and the two hydraulic cylinders drive the braking parts to reversely compress and brake the wheels of the wheel pairs.
The hydraulic cylinder in the braking device of the embodiment can drive the braking part to realize the braking function by using the following modes:
The mode 2 is a spring release retraction structure, a spring is arranged in a rod cavity of a hydraulic cylinder, when pressure liquid is conveyed into a rodless cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder extends out, the spring in the rod cavity is compressed, the piston rod of the hydraulic cylinder drives a braking piece to compress and brake wheels of a wheel pair, and a traveling device stops running; when the liquid pressure in the rodless cavity of the hydraulic cylinder is unloaded, the spring compressed in the rod cavity releases the elastic force to enable the piston rod of the hydraulic cylinder to retract, the piston rod of the hydraulic cylinder drives the braking piece to be separated from the wheel of the wheel pair to release braking, and the traveling device can operate.
The mode 3 is a spring release extension structure, a spring is arranged in a rodless cavity of a hydraulic cylinder or on a piston rod outside the hydraulic cylinder, when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, the piston rod of the hydraulic cylinder retracts, the spring in the rodless cavity or the spring on a piston rod outside the cylinder body is compressed, the piston rod of the hydraulic cylinder drives a braking piece to be separated from wheels of a wheel pair to release braking, and the traveling device can operate; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the compressed spring in the rodless cavity or on the piston rod outside the cylinder releases elastic force to enable the piston rod of the hydraulic cylinder to extend out, the piston rod of the hydraulic cylinder drives the braking piece to compress and brake the wheels of the wheel pair, and the running device stops running.
The mode 3 is a preferable scheme of the hydraulic cylinder of the embodiment, and fig. 3.1 shows a double-piston-rod cylinder structure with a built-in spring; FIG. 3.2 is a double-piston rod cylinder structure with an external spring; FIG. 3.3 is a single piston rod cylinder structure with a built-in spring; fig. 3.4 shows a single piston rod cylinder structure with an external spring.
On the same principle, the hydraulic cylinder can be provided with a tension spring structure, the spring releasing and retracting function and the spring releasing and extending function can be realized, and a piston rod of the hydraulic cylinder can drive a braking piece to compress and brake wheels of the wheel pair or release the braking.
In the parking braking mode of the embodiment, the constant liquid pressure can be kept by the hydraulic cylinder to drive the braking part to always press and brake the wheels of the wheel pair, so that the parking braking of the locomotive is realized; the braking part can be driven to always press and brake the wheels of the wheel pair through the elastic force released by the spring inside or outside the hydraulic cylinder, so that the parking brake of the locomotive is realized when the locomotive is parked.
The above-mentioned embodiments are merely illustrative of the present invention, and not restrictive, and it should be understood that various changes and modifications in the spirit and scope of the invention may be made by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. The utility model provides a colliery explosion-proof battery is hydraulic pressure straight-pushing braking device for electric locomotive, includes locomotive box (1), wheel pair (2), bearing frame (3), pneumatic cylinder (4), braking piece (5), bearing frame (3) are assembled at the shaft both ends of wheel pair (2), wheel pair (2) with install together after bearing frame (3) the locomotive box (1) is gone up its characterized in that: the hydraulic cylinder (4) is assembled on the locomotive box body (1), the braking part (5) is connected with the hydraulic cylinder (4), and the hydraulic cylinder (4) directly drives the braking part (5) to compress and brake or release the brake to the wheels of the wheel pair (2) through telescopic motion.
2. The hydraulic direct-pushing brake device for the coal mine explosion-proof storage battery electric locomotive according to claim 1, characterized in that: the hydraulic cylinder (4) is of a pressure liquid driving structure, when liquid pressure of each cavity in the hydraulic cylinder is different, the pressure liquid drives the hydraulic cylinder to stretch and retract, and the hydraulic cylinder drives the braking piece to compress and brake or release braking of wheels of the wheel pair.
3. The hydraulic direct-pushing brake device for the coal mine explosion-proof storage battery electric locomotive according to claim 1, characterized in that: the hydraulic cylinder (4) is of a spring release retraction structure, the spring is arranged in a rod cavity of the hydraulic cylinder, when pressure liquid is conveyed into a rodless cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder extends out, the spring in the rod cavity is compressed, and the hydraulic cylinder drives a braking part to compress and brake wheels of the wheel pair; when the liquid pressure in the rodless cavity of the hydraulic cylinder is unloaded, the spring compressed in the rod cavity releases the elastic force to enable the piston rod of the hydraulic cylinder to retract, and the hydraulic cylinder drives the braking piece to be separated from the wheel of the wheel pair to release braking.
4. The hydraulic direct-pushing brake device for the coal mine explosion-proof storage battery electric locomotive according to claim 1, characterized in that: the hydraulic cylinder (4) is of a spring release extension structure, the spring is arranged in a rodless cavity of the hydraulic cylinder or on a piston rod outside the hydraulic cylinder, when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, the piston rod of the hydraulic cylinder retracts, the spring in the rodless cavity or the spring on a piston rod outside the cylinder body is compressed, and the hydraulic cylinder drives the braking part to be separated from the wheel of the wheel pair to release braking; when the liquid pressure in the rod cavity of the hydraulic cylinder is unloaded, the compressed spring in the rodless cavity or on the piston rod outside the cylinder body releases the elastic force to extend the piston rod of the hydraulic cylinder, and the hydraulic cylinder drives the braking part to compress and brake the wheels of the wheel pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020561273.4U CN211995595U (en) | 2020-04-14 | 2020-04-14 | Hydraulic direct-pushing brake device for coal mine explosion-proof storage battery electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020561273.4U CN211995595U (en) | 2020-04-14 | 2020-04-14 | Hydraulic direct-pushing brake device for coal mine explosion-proof storage battery electric locomotive |
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| Publication Number | Publication Date |
|---|---|
| CN211995595U true CN211995595U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020561273.4U Active CN211995595U (en) | 2020-04-14 | 2020-04-14 | Hydraulic direct-pushing brake device for coal mine explosion-proof storage battery electric locomotive |
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|---|---|
| CN (1) | CN211995595U (en) |
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