CN212796890U - Mining narrow-gauge electric locomotive and running gear with hydraulic braking system - Google Patents
Mining narrow-gauge electric locomotive and running gear with hydraulic braking system Download PDFInfo
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- CN212796890U CN212796890U CN202020561154.9U CN202020561154U CN212796890U CN 212796890 U CN212796890 U CN 212796890U CN 202020561154 U CN202020561154 U CN 202020561154U CN 212796890 U CN212796890 U CN 212796890U
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Abstract
The invention discloses a traveling device with a hydraulic braking system for a mining narrow gauge electric locomotive, which comprises wheels, an electric motor, braking parts, a hydraulic cylinder, a liquid storage tank, a hydraulic pump, a transmission mechanism and an energy accumulator, wherein the electric motor is a direct-drive electric motor, the wheels are assembled on two sides of an output shaft of the direct-drive electric motor, the braking parts are connected with the hydraulic cylinder, the hydraulic cylinder and the braking parts are connected on the direct-drive electric motor, the hydraulic pump is connected with the direct-drive electric motor through the transmission mechanism, a liquid inlet of the hydraulic pump is connected with the liquid storage tank, and a. The direct drive motor drives the hydraulic pump to operate through the transmission mechanism, liquid input from the liquid storage tank is conveyed to the energy accumulator or the hydraulic cylinder, the hydraulic cylinder drives the hydraulic cylinder to stretch and retract by utilizing pressure liquid conveyed by the hydraulic pump or the energy accumulator, and the braking part is driven to compress the inner side surface of the wheel or release braking. The utility model discloses simple structure is compact, and the braking is steady, and braking torque is big, fast, apart from short, and operational reliability is high.
Description
Technical Field
The invention relates to the technical field of mining electric locomotives, in particular to a running gear with a hydraulic braking system for a mining narrow gauge electric locomotive.
Background
In the mine transportation equipment, an electric locomotive is the main equipment for mine transportation in China at present and is mainly used for hauling a mine car group, transporting minerals, equipment and personnel. In the working process of the electric locomotive, the environment is complex, the running track is narrow, the space is small, so that the overall dimension of the electric locomotive is small, parts such as an electric control part, a traveling driving part, a brake braking part and a sand scattering part which are necessary for the locomotive are required to be arranged in a box body with limited space, the locomotive is crowded, the driving operation is uncomfortable, the maintenance is inconvenient, and the improvement of the brake 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 mining electric locomotives 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.
Due to the limitation of the electric locomotive in terms of space structure and electrical control, hydraulic brakes are less used in the mining electric locomotive, and the hydraulic brakes used in the existing locomotive are as follows: 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
Aiming at the problems in the prior art, the patent discloses a running gear with a hydraulic braking system for a mining narrow gauge electric locomotive, a hydraulic cylinder drives a braking part to perform friction braking on the inner side surface of a wheel, the structure is simple and compact, the braking is stable, the braking torque is large, the speed is high, the distance is short, the working reliability is high, a hydraulic power source is from a traction motor in the electric locomotive, the structure is simple, and the power is stable.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that: the utility model provides a mining narrow gauge locomotive is with walking device of taking hydraulic braking system, includes wheel 1, motor, braking piece 3, pneumatic cylinder 4, liquid reserve tank 5, hydraulic pump 6, drive mechanism 7, energy storage ware 8, its characterized in that: the electric motor is a direct drive motor 21, the wheel 1 is assembled on two sides of the direct drive motor 21, the brake part 3 is connected with the hydraulic cylinder 4, the hydraulic cylinder 4 and the brake part 3 are connected on the direct drive motor 21, the hydraulic pump 6 is connected with the direct drive motor 21 through the transmission mechanism 7, a liquid inlet of the hydraulic pump 6 is connected with the liquid storage tank 5, and a liquid outlet of the hydraulic pump 6 is connected with the energy accumulator 8 and an interface of the hydraulic cylinder 4.
The direct drive motor 21 drives the hydraulic pump 6 to operate through the transmission mechanism 7, the hydraulic pump 6 conveys liquid input from the liquid storage tank 5 to the energy accumulator 8 or the hydraulic cylinder 4, and the hydraulic cylinder 4 drives the hydraulic cylinder to perform self telescopic action by utilizing pressure liquid conveyed by the hydraulic pump 6 or the energy accumulator 8 to drive the braking part 3 to perform compression braking or brake releasing on the inner side surface of the wheel 1.
The invention also discloses a walking device with a hydraulic braking system for a mining narrow gauge electric locomotive, which comprises a wheel pair 9, an electric motor, a braking part 3, a hydraulic cylinder 4, a liquid storage tank 5, a hydraulic pump 6, a transmission mechanism 7 and an energy accumulator 8, and is characterized in that: the motor is a primary transmission motor 22, the primary transmission motor 22 is assembled on a wheel shaft of the wheel pair 9, the brake part 3 is connected with the hydraulic cylinder 4, the hydraulic cylinder 4 and the brake part 3 are connected on the primary transmission motor 22, the hydraulic pump 6 is connected with the wheel pair 9 through the transmission mechanism 7, a liquid inlet of the hydraulic pump 6 is connected with the liquid storage tank 5, and a liquid outlet of the hydraulic pump 6 is connected with the energy accumulator 8 and an interface of the hydraulic cylinder 4.
The primary transmission motor 22 drives the wheel set 9 to rotate through the transmission mechanism 7, the wheel set 9 drives the hydraulic pump 6 to operate, the hydraulic pump 6 conveys liquid input from the liquid storage tank 5 to the energy accumulator 8 or the hydraulic cylinder 4, and the hydraulic cylinder 4 drives the hydraulic cylinder to perform self telescopic action by utilizing pressure liquid conveyed from the hydraulic pump 6 or the energy accumulator 8, so as to drive the braking part 3 to perform compression braking or brake releasing on the inner side surface of the wheel set 9.
The running gear with the hydraulic brake mechanism for the coal mine explosion-proof storage battery electric locomotive is further characterized in that: the hydraulic cylinder 4 can be a single hydraulic cylinder for telescopic action or a plurality of parallel hydraulic cylinders for synchronous telescopic action. The braking part 3 is of a single braking part structure, or a braking component structure containing a guide, or a braking component structure containing a spring I33 and a guide.
The running gear with the hydraulic braking system for the mining narrow gauge motor vehicle is further characterized in that:
the hydraulic cylinder 4 is connected with the braking part 3, the braking part 3 is a single braking part, a second spring 41 is arranged in a rodless cavity of the hydraulic cylinder 4, when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder retracts, the second spring in the rodless cavity is compressed, and the hydraulic cylinder drives the braking part to be separated from the inner side surface of the wheel to release braking; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the elastic force of the compressed spring II in the rodless cavity is released to extend the piston rod of the hydraulic cylinder, and the hydraulic cylinder drives the braking piece to compress and brake the inner side surface of the wheel.
The hydraulic cylinder 4 is connected with the braking part 3, the braking part 3 is a braking component containing a guide, a second spring 41 is arranged in a rodless cavity of the hydraulic cylinder 4, when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder retracts, the second spring in the rodless cavity is compressed, and the hydraulic cylinder drives the braking part containing the guide to be separated from the inner side surface of the wheel to release braking; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the elastic force of the compressed spring II in the rodless cavity is released to extend the piston rod of the hydraulic cylinder, and the hydraulic cylinder drives the braking part containing the guide to compress and brake the inner side surface of the wheel.
The hydraulic cylinder 4 is connected with the braking part 3, the braking part 3 is a braking assembly containing a first spring 33 and a guide, when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder retracts, the first spring in the braking part is compressed, and the hydraulic cylinder drives the braking part to be separated from the inner side surface of the wheel to release braking; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the compressed spring releases elastic force to enable the braking part to compress and brake the inner side surface of the wheel, and meanwhile, the piston rod of the hydraulic cylinder is driven to extend out.
The invention also discloses a coal mine explosion-proof storage battery electric locomotive which is characterized in that: the running gear with the hydraulic braking system is used.
Has the advantages that:
1. the device realizes braking on the locomotive by utilizing the hydraulic cylinder to drive the braking part to rub the inner side surface of the wheel, has simple structure, compact layout, convenient assembly and maintenance and low maintenance cost, can save the existing mechanical hand wheel braking mechanism, and has low operation strength and high driving comfort;
2. the hydraulic cylinder, the braking part and the motor are integrated, so that the relative position of the braking part and the wheel is accurate, the braking effect of the braking part and the wheel caused by the shaking of the locomotive during operation is overcome, the braking is stable, the braking effect is good, the working reliability is high, and the safe use requirement of the mining locomotive can be met;
3. the device adopts a hydraulic braking mode, has short braking reaction time, high speed, large braking torque and short distance, can realize emergency braking during driving, and reduces the accident rate of industrial injury caused by unreliable braking;
4. the power source of the hydraulic system is a traction motor in the electric locomotive, an independent motor is not required to be additionally arranged to drive a hydraulic pump, the electric control structure is simple, and the power is stable.
5. 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 is avoided;
6. the device can keep constant liquid pressure through a hydraulic cylinder to drive a braking part to press and brake the inner side surface of a wheel all the time, so that parking brake of the locomotive is realized; the braking part can be driven by the elastic force released by the spring to press and brake the inner side surface of the wheel all the time so as to realize parking braking when the locomotive is parked, and the working safety and reliability are high.
Drawings
FIGS. 1A to 1D are schematic views (single cylinder configuration) of a direct drive transmission running gear of this embodiment 1.
FIGS. 2A to 2D are schematic views (multi-cylinder parallel structure) of the direct drive running gear of the embodiment 1.
FIGS. 3A to 3D are schematic views (single cylinder structure) of the primary drive running gear of embodiment 2.
FIGS. 4A to 4D are schematic views of a primary transmission running gear of embodiment 2 (multi-cylinder parallel structure).
FIG. 5 is a schematic view of the structure of the hydraulic cylinder connecting brake member of the embodiment (single brake member double cylinder brake).
FIG. 6 is a schematic view of the construction of the hydraulic cylinder attachment stop of this embodiment (horizontal bar braking with guided brake assembly).
FIG. 7 is a schematic view of the construction of the hydraulic cylinder attachment stop of this embodiment (horizontal bar braking with spring and guided brake assembly).
FIG. 8 is a schematic view of a direct drive electric locomotive including the running gear of the embodiment.
FIG. 9 is a schematic view of a primary drive electric locomotive incorporating the running gear of the present embodiment.
Wherein, 1 is a wheel; 21 is a direct drive motor; 22 is a primary transmission motor; 3 is a braking part; 31 is a guide shaft; 32 is a guide seat; 33 is a first spring; 4 is a hydraulic cylinder; 41 is a spring II; a liquid storage tank is arranged at the lower part of the shell; 6 is a hydraulic pump; 7 is a transmission mechanism; 8 is an energy accumulator; 9 is a wheel pair; 10 is a locomotive box body; and 11 is a bearing seat.
Detailed Description
The technical solution of the present invention is further described by the following embodiments with reference to the accompanying drawings.
The traveling device with the hydraulic braking system for the mining narrow gauge motor vehicle comprises wheels 1, a motor, braking parts 3, hydraulic cylinders 4, a liquid storage tank 5, a hydraulic pump 6, a transmission mechanism 7 and an energy accumulator 8, wherein the motor is a direct-drive motor 21, the wheels 1 are assembled on two sides of the direct-drive motor 21, the braking parts 3 are connected with piston rods of the hydraulic cylinders 4, the hydraulic cylinders 4 and the braking parts 3 are connected onto the direct-drive motor 21, the hydraulic pump 6 is connected with an output shaft of the direct-drive motor 21 through the transmission mechanism 7, a liquid inlet of the hydraulic pump 6 is connected with the liquid storage tank 5, and a liquid outlet of the hydraulic pump 6 is connected with interfaces of the energy accumulator 8. FIGS. 1A to 1D are schematic views (single-cylinder structure) of a direct drive transmission running gear of the embodiment 1; FIGS. 2A to 2D are schematic views (multi-cylinder parallel structure) of the direct drive running gear of the embodiment 1.
In the embodiment 1, the direct drive motor 21 drives the hydraulic pump 6 to operate through the transmission mechanism 7, the hydraulic pump 6 conveys the liquid input from the liquid storage tank 5 to the energy accumulator 8 or the hydraulic cylinder 4, and the hydraulic cylinder 4 drives the hydraulic cylinder to extend and retract by utilizing the pressure liquid conveyed from the hydraulic pump 6 or the energy accumulator 8, so as to drive the braking member 3 to compress and brake the inner side surface of the wheel 1 or release the braking.
The housing of the direct drive motor and the cylinder body of the hydraulic cylinder in this embodiment 1 can be manufactured as an integral structure by integral processing, and can also be assembled as an integral fixed structure after being respectively processed, for example: the hydraulic cylinder body can be welded or cast on the direct drive motor shell to be integrally processed, or the hydraulic cylinder body and the direct drive motor shell are respectively processed and then fixed on the direct drive motor shell by bolts, so that the hydraulic cylinder body has the advantages of high processing precision, accurate relative position and good stability.
The direct drive motor of the embodiment 1 can directly drive the wheels at the two ends of the output shaft of the direct drive motor to rotate so as to enable the electric locomotive to walk, and can drive the hydraulic pump to work so as to provide continuous and stable power for the hydraulic braking system.
The traveling device with the hydraulic braking system for the mining narrow gauge electric locomotive in the embodiment 2 comprises a wheel set 9, a motor, a braking part 3, a hydraulic cylinder 4, a liquid storage tank 5, a hydraulic pump 6, a transmission mechanism 7 and an energy accumulator 8, wherein the motor is a primary transmission motor 22, the primary transmission motor 22 is assembled in the middle of a wheel shaft of the wheel set 9, the braking part 3 is connected with a piston rod of the hydraulic cylinder 4, the hydraulic cylinder 4 and the braking part 3 are connected onto the primary transmission motor 22, the hydraulic pump 6 is connected with the wheel shaft of the wheel set 9 through the transmission mechanism 7, a liquid inlet of the hydraulic pump 6 is connected with the liquid storage tank 5, and a liquid outlet of the hydraulic pump 6 is connected with. FIGS. 3A to 3D are schematic views (single cylinder structure) of the primary transmission running gear of the embodiment 2; FIGS. 4A to 4D are schematic views of a primary transmission running gear of embodiment 2 (multi-cylinder parallel structure).
The primary transmission motor 22 of this embodiment 2 drives the wheel set 9 to rotate through the transmission mechanism 7, the wheel set 9 drives the hydraulic pump 6 to operate, the hydraulic pump 6 conveys the liquid input from the liquid storage tank 5 to the energy accumulator 8 or the hydraulic cylinder 4, the hydraulic cylinder 4 drives the hydraulic cylinder to extend and retract by utilizing the pressure liquid conveyed from the hydraulic pump 6 or the energy accumulator 8, and the braking member 3 is driven to compress and brake or release the brake on the inner side surfaces of the wheels of the wheel set 9.
The housing of the primary transmission motor and the cylinder body of the hydraulic cylinder in this embodiment 2 can be manufactured as an integral structure by integral processing, or can be assembled as an integral fixed structure after being processed respectively, for example: the hydraulic cylinder body can be welded or cast on the first-stage transmission motor shell to be integrally processed, or the hydraulic cylinder body and the first-stage transmission motor shell are respectively processed and then fixed on the first-stage transmission motor shell by using bolts, so that the hydraulic cylinder body is high in processing precision, accurate in relative position and good in stability.
The primary transmission motor of this embodiment 2 can drive its wheel pair that connects and rotate and make the electric locomotive walk, can drive hydraulic pump work again, provides lasting stable power for hydraulic braking system.
The hydraulic cylinders of the embodiments can be a double-piston-rod hydraulic cylinder which drives the braking parts on the two sides of the piston rod to compress and brake the inner side surface of the wheel, or a plurality of double-piston-rod hydraulic cylinders can be used in parallel, and simultaneously, the telescopic action drives the braking parts on the two sides to compress and brake the inner side surface of the wheel; or the hydraulic cylinders may be a group of single-piston-rod hydraulic cylinders arranged side by side and capable of simultaneously stretching to both sides to drive the braking member to compress and brake the inner side surface of the wheel, or a plurality of groups of single-piston-rod hydraulic cylinders arranged side by side may be used in parallel, and each group of hydraulic cylinders simultaneously stretches to both sides to drive the braking member to compress and brake the inner side surface of the wheel, as shown in fig. 5 and 6.
The braking members of the various embodiments may be a single braking member attached to the end of the cylinder, as shown in FIG. 5; or a brake component with a guide function, and the brake component is matched with the hydraulic cylinder to realize the compression braking or the brake release of the inner side surface of the wheel, as shown in figure 6; or a brake assembly (comprising a guide shaft 31 and a guide seat 32) containing a spring I33 and a guide, and the brake assembly is matched with the hydraulic cylinder to realize the compression braking or the brake release on the inner side surface of the wheel, as shown in fig. 7.
The hydraulic cylinder of each embodiment connects the braking piece and realizes the compression braking or the brake release of the wheel by the telescopic action, and the structure is as follows: the braking part 3 is a single braking part connected to the end part of the hydraulic cylinder, a second spring 41 is arranged in a rodless cavity of the hydraulic cylinder 4, when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder retracts, the second spring in the rodless cavity is compressed, the hydraulic cylinder drives the braking part to be separated from the inner side surface of the wheel to release braking, and the locomotive can run; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the elastic force of the compressed spring II in the rodless cavity is released to enable the piston rod of the hydraulic cylinder to extend out, the hydraulic cylinder drives the braking piece to compress and brake the inner side surface of the wheel, and the locomotive stops running as shown in figure 5. The second spring 41 in the embodiment can also be arranged in a rod cavity of the hydraulic cylinder, the piston rod is driven to extend out by utilizing the pressure liquid in the rodless cavity to drive the braking part to compress and brake the inner side surface of the wheel, and the compressed second spring in the rod cavity releases the elastic force to drive the piston rod to reset, so that the braking part and the wheel are driven to release braking; or the hydraulic cylinder is not provided with the second spring, and the piston rod of the hydraulic cylinder is driven to stretch and retract by utilizing different pressure liquid entering and exiting from each cavity in the hydraulic cylinder to drive the braking part to move, so that the braking part can compress the inner side surface of the wheel to brake or release the brake. While falling within the scope of the claims.
Or the hydraulic cylinder of each embodiment is connected with the braking part to realize the compression braking or the brake release of the wheel by the telescopic action, and the structure is as follows: the braking part 3 is a braking component with a guide function, the braking part 3 can reciprocate in the guide seat 32 through the guide shaft 31, the braking part 3 is connected with a piston rod of the hydraulic cylinder 4, a second spring 41 is arranged in a rodless cavity of the hydraulic cylinder 4, when pressure liquid is conveyed into the rod cavity of the hydraulic cylinder, the piston rod of the hydraulic cylinder retracts, the second spring in the rodless cavity is compressed, the hydraulic cylinder drives the braking part with the guide function to be separated from the inner side surface of the wheel to release braking, and the locomotive can run; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the elastic force of the compressed spring II in the rodless cavity is released to enable the piston rod of the hydraulic cylinder to extend out, the hydraulic cylinder drives the braking part with the guiding function to compress and brake the inner side surface of the wheel, and the locomotive stops running as shown in figure 6. The second spring 41 of the embodiment can also be arranged on a piston rod outside the hydraulic cylinder body, the piston rod is driven to retract by utilizing pressure liquid in the rod cavity to drive the braking part to release braking with the wheel, and the compressed second spring releases elastic force to drive the piston rod to extend out to drive the braking part to compress and brake the inner side surface of the wheel; or the second spring 41 can also be arranged in a rod cavity of the hydraulic cylinder, the piston rod is driven to extend out by utilizing the pressure liquid in the rodless cavity to drive the braking part to compress and brake the inner side surface of the wheel, and the compressed second spring in the rod cavity releases elastic force to drive the piston rod to reset to drive the braking part and the wheel to release braking; or the hydraulic cylinder is not provided with the second spring, and the piston rod of the hydraulic cylinder is driven to stretch and retract by utilizing different pressure liquid entering and exiting from each cavity in the hydraulic cylinder to drive the braking part to move, so that the braking part can compress the inner side surface of the wheel to brake or release the brake. While falling within the scope of the claims.
Or the hydraulic cylinder of each embodiment is connected with the braking piece to realize the friction braking or the brake releasing of the wheels by the wheels through the telescopic action, and the structure is as follows: the braking part 3 is a braking component comprising a first spring 33 and a guide, the first spring 33 is arranged on a guide shaft 31, the braking part 3 can reciprocate in a guide seat 32 through the guide shaft 31, the braking part 3 is connected with a piston rod of a hydraulic cylinder 4, when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, the piston rod of the hydraulic cylinder retracts, the first spring in the braking part is compressed, the hydraulic cylinder drives the braking part to be separated from the inner side surface of a wheel to release braking, and the locomotive can run; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the compressed spring releases elastic force to enable the braking part to compress and brake the inner side surface of the wheel, the locomotive can run, and meanwhile, the piston rod of the hydraulic cylinder is driven to extend out for the next cycle, as shown in fig. 7. The hydraulic cylinder of the embodiment can also drive the piston rod to extend out to drive the braking part to realize braking through pressure liquid, and the compressed spring I33 in the braking part drives the braking part and the piston rod to reset to release braking. While falling within the scope of the claims.
The parking braking mode of each embodiment can keep constant liquid pressure through a hydraulic cylinder to drive a braking part to always press and brake the inner side surface of a wheel, so that the parking braking of the locomotive is realized; the braking part can be driven to always press and brake the inner side surface of the wheel through the elastic force released by the spring, so that the parking brake of the locomotive is realized when the locomotive is parked, and the mechanical braking mode adopting the spring release is higher in safety and reliability.
The transmission mechanism of each embodiment can adopt gear transmission, chain wheel transmission, belt pulley transmission or other transmission modes, wherein gear transmission or chain wheel transmission is the preferred scheme.
Fig. 8 is a schematic view of a direct-drive transmission electric locomotive comprising the running gear of the embodiment. The wheel 1 is assembled at two ends of an output shaft of a direct drive motor 21, a bearing seat 11 is assembled on the output shaft of the direct drive motor 21 at the outer side of the wheel 1, the bearing seat 11 and the direct drive motor 21 are assembled and then are assembled on a locomotive box body 10, a brake part 3 is connected with a piston rod of a hydraulic cylinder 4, the hydraulic cylinder 4 and the brake part 3 are connected on the direct drive motor 21, a hydraulic pump 4 is connected with the output shaft of the direct drive motor 21 through a transmission mechanism 7, a liquid inlet of the hydraulic pump 6 is connected with a liquid storage tank 5, and a liquid outlet of the hydraulic pump; the direct drive motor 21 drives the hydraulic pump 6 to operate through the transmission mechanism 7, the hydraulic pump 6 conveys liquid input from the liquid storage tank 5 to the energy accumulator 8 or the hydraulic cylinder 4, the hydraulic cylinder 4 drives the hydraulic cylinder to extend and retract by utilizing pressure liquid conveyed by the hydraulic pump 6 or the energy accumulator 8, and the braking part 3 is driven to compress and brake or brake the inner side surface of the wheel 1, so that the electric locomotive stops operating or can be started to operate.
FIG. 9 is a schematic view of a primary-drive electric locomotive including the running gear of the present embodiment. The primary transmission motor 22 is assembled in the middle of a wheel shaft of the wheel pair 9, the bearing seat 11 is assembled at two ends of the wheel shaft of the wheel pair 9, the primary transmission motor 22, the bearing seat 11 and the wheel pair 9 are assembled and then are assembled on a locomotive box body 10, the braking part 3 is connected with a piston rod of the hydraulic cylinder 4, the hydraulic cylinder 4 and the braking part 3 are connected on the primary transmission motor 22, the hydraulic pump 6 is connected with the wheel shaft of the wheel pair 9 through the transmission mechanism 7, a liquid inlet of the hydraulic pump 6 is connected with the liquid storage tank 5, and a liquid outlet of the hydraulic pump 6 is connected; the primary transmission motor 22 drives the wheel pair 9 to rotate through the transmission mechanism 7, the wheel pair 9 drives the hydraulic pump 6 to operate, the hydraulic pump 6 conveys liquid input from the liquid storage tank 5 to the energy accumulator 8 or the hydraulic cylinder 4, the hydraulic cylinder 4 drives the hydraulic cylinder to stretch and retract by utilizing the pressure liquid conveyed by the hydraulic pump 6 or the energy accumulator 8, and the braking part 3 is driven to compress and brake or release the brake on the inner side surface of the wheel pair 9, so that the electric locomotive stops operating or can start operating.
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 (8)
1. The utility model provides a mining narrow gauge locomotive is with walking device of taking hydraulic braking system, includes wheel (1), motor, braking piece (3), pneumatic cylinder (4), liquid reserve tank (5), hydraulic pump (6), drive mechanism (7), energy storage ware (8), its characterized in that: the electric motor is a direct drive motor (21), the wheels (1) are assembled on two sides of an output shaft of the direct drive motor (21), the braking part (3) is connected with the hydraulic cylinder (4), the hydraulic cylinder (4) and the braking part (3) are connected to the direct drive motor (21), the hydraulic pump (6) is connected with the direct drive motor (21) through the transmission mechanism (7), a liquid inlet of the hydraulic pump (6) is connected with the liquid storage tank (5), and a liquid outlet of the hydraulic pump (6) is connected with interfaces of the energy accumulator (8) and the hydraulic cylinder (4);
the direct drive motor (21) drives the hydraulic pump (6) to run through the transmission mechanism (7), the hydraulic pump (6) conveys liquid input from the liquid storage tank (5) to the energy accumulator (8) or the hydraulic cylinder (4), and the hydraulic cylinder (4) drives the hydraulic cylinder to perform self telescopic action by utilizing pressure liquid conveyed from the hydraulic pump (6) or the energy accumulator (8) to drive the braking part (3) to compress and brake or release braking on the inner side surface of the wheel (1).
2. The utility model provides a mining narrow gauge motor car is with walking device of taking hydraulic braking system, it includes wheel pair (9), motor, braking piece (3), pneumatic cylinder (4), liquid reserve tank (5), hydraulic pump (6), drive mechanism (7), energy storage ware (8), its characterized in that: the motor is a primary transmission motor (22), the primary transmission motor (22) is assembled on a wheel shaft of the wheel pair (9), the braking part (3) is connected with the hydraulic cylinder (4), the hydraulic cylinder (4) and the braking part (3) are connected to the primary transmission motor (22), the hydraulic pump (6) is connected with the wheel pair (9) through the transmission mechanism (7), a liquid inlet of the hydraulic pump (6) is connected with the liquid storage tank (5), and a liquid outlet of the hydraulic pump (6) is connected with interfaces of the energy accumulator (8) and the hydraulic cylinder (4);
the primary transmission motor (22) drives the wheel pair (9) to rotate through the transmission mechanism (7), the wheel pair (9) drives the hydraulic pump (6) to run, the hydraulic pump (6) conveys liquid input from the liquid storage tank (5) to the energy accumulator (8) or the hydraulic cylinder (4), and the hydraulic cylinder (4) drives the hydraulic cylinder to perform self telescopic action by utilizing pressure liquid conveyed by the hydraulic pump (6) or the energy accumulator (8) to drive the braking part (3) to compress and brake or release braking on the inner side surface of the wheel pair (9).
3. The running gear with the hydraulic brake system for the narrow-gauge electric mining vehicle according to one of claims 1 to 2, characterized in that: the hydraulic cylinder (4) can perform telescopic action by a single hydraulic cylinder or perform synchronous telescopic action by a plurality of parallel hydraulic cylinders.
4. The running gear with the hydraulic brake system for the narrow-gauge electric mining vehicle according to one of claims 1 to 2, characterized in that: the braking part (3) is of a single braking part structure, or a braking component structure containing a guide, or a braking component structure containing a first spring (33) and a guide.
5. The running gear with the hydraulic brake system for the narrow-gauge electric mining vehicle according to one of claims 1 to 2, characterized in that: the hydraulic cylinder (4) is connected with the braking part (3), the braking part (3) is a single braking part, a second spring (41) is arranged in a rodless cavity of the hydraulic cylinder (4), when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder retracts, the second spring in the rodless cavity is compressed, and the hydraulic cylinder drives the braking part to be separated from the inner side surface of the wheel to release braking; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the elastic force of the compressed spring II in the rodless cavity is released to extend the piston rod of the hydraulic cylinder, and the hydraulic cylinder drives the braking piece to compress and brake the inner side surface of the wheel.
6. The running gear with the hydraulic brake system for the narrow-gauge electric mining vehicle according to one of claims 1 to 2, characterized in that: the hydraulic cylinder (4) is connected with the braking part (3), the braking part (3) is a braking assembly containing a guide, a second spring (41) is arranged in a rodless cavity of the hydraulic cylinder (4), when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder retracts, the second spring in the rodless cavity is compressed, and the hydraulic cylinder drives the braking part containing the guide to be separated from the inner side surface of the wheel to release braking; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the elastic force of the compressed spring II in the rodless cavity is released to extend the piston rod of the hydraulic cylinder, and the hydraulic cylinder drives the braking part containing the guide to compress and brake the inner side surface of the wheel.
7. The running gear with the hydraulic brake system for the narrow-gauge electric mining vehicle according to one of claims 1 to 2, characterized in that: the hydraulic cylinder (4) is connected with the braking part (3), the braking part (3) is a braking assembly comprising a first spring (33) and a guide part, when pressure liquid is conveyed into a rod cavity of the hydraulic cylinder, a piston rod of the hydraulic cylinder retracts, the first spring in the braking part is compressed, and the hydraulic cylinder drives the braking part to be separated from the inner side surface of the wheel to release braking; when the pressure of the liquid in the rod cavity of the hydraulic cylinder is unloaded, the compressed spring releases elastic force to enable the braking part to compress and brake the inner side surface of the wheel, and meanwhile, the piston rod of the hydraulic cylinder is driven to extend out.
8. The utility model provides a mining narrow gauge electric locomotive which characterized in that: use of a running gear according to one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020561154.9U CN212796890U (en) | 2020-04-14 | 2020-04-14 | Mining narrow-gauge electric locomotive and running gear with hydraulic braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020561154.9U CN212796890U (en) | 2020-04-14 | 2020-04-14 | Mining narrow-gauge electric locomotive and running gear with hydraulic braking system |
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| Publication Number | Publication Date |
|---|---|
| CN212796890U true CN212796890U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020561154.9U Active CN212796890U (en) | 2020-04-14 | 2020-04-14 | Mining narrow-gauge electric locomotive and running gear with hydraulic braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212796890U (en) |
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2020
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