CN115320650B - Automatic brake device and automatic brake trolley - Google Patents
Automatic brake device and automatic brake trolley Download PDFInfo
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- CN115320650B CN115320650B CN202211071662.9A CN202211071662A CN115320650B CN 115320650 B CN115320650 B CN 115320650B CN 202211071662 A CN202211071662 A CN 202211071662A CN 115320650 B CN115320650 B CN 115320650B
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- trolley
- brake
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- 230000007246 mechanism Effects 0.000 claims abstract description 131
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D15/00—Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/02—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of self-applying brakes
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Abstract
The invention relates to the technical field of track equipment, in particular to an automatic braking device and an automatic braking trolley. The automatic braking device comprises a braking mechanism, a braking mechanism and an elastic restoring mechanism, wherein the braking mechanism is connected with the frame; the braking mechanism comprises a first connecting rod, a linkage structure, a second connecting rod and a braking structure, wherein the first connecting rod is rotationally connected to the frame, the push-pull rod is connected with the first connecting rod, one end of the linkage structure is rotationally connected with the first connecting rod, the other end of the linkage structure is rotationally connected with the second connecting rod, and the second connecting rod is in transmission connection with the braking structure; one end of the elastic restoring mechanism is connected with the frame, and the other end is connected with the brake mechanism in a transmission way. The automatic braking device is arranged on the trolley, so that the braking can be automatically released when the trolley runs, and the trolley can be automatically braked when the trolley stops, thereby simplifying the use of the trolley. Meanwhile, the trolley does not need to consider the problem of braking in the use process, so that the potential safety hazard of the trolley in use is reduced.
Description
Technical Field
The invention relates to the technical field of track equipment, in particular to an automatic braking device and an automatic braking trolley.
Background
In the construction of subways and railways, a trolley is required to be used for transporting materials, the trolley comprises a frame and wheels, and the wheels roll on the rails of the subways and railways to drive the frame to walk. In the prior art, when the trolley stops walking, the trolley is required to be limited by using the iron shoes, so that the trolley is prevented from moving on the track under the influence of gravity.
Because the trolley is required to stop for many times in the walking process so as to transport materials on two sides of the track, when the trolley stops each time, the trolley is required to be limited by using the iron shoes, and when the trolley is used, the iron shoes are required to be removed, so that the trolley is complicated in use process. Meanwhile, the limit process of the trolley is complicated, so that workers can forget to set the iron shoes to limit the trolley, and potential safety hazards are easily caused.
Disclosure of Invention
The invention solves the problem of simplifying the limit process of the trolley and reducing the potential safety hazard.
In order to solve the problems, the invention provides an automatic braking device which is applied to a trolley, wherein the trolley comprises a frame, a wheel bracket, wheels and a push-pull rod, the wheel bracket is arranged at the lower end of the frame, the wheels are connected with the wheel bracket, the push-pull rod is arranged on the frame, the automatic braking device comprises a braking mechanism, a braking mechanism and an elastic restoring mechanism, one end of the braking mechanism is connected with the frame, and the other end of the braking mechanism is used for being connected with the wheels;
the braking mechanism comprises a first connecting rod, a linkage structure, a second connecting rod and a braking structure, wherein the first connecting rod is arranged at the rear side of the frame and is rotationally connected with the frame, the lower end of the push-pull rod is connected with the first connecting rod, one end of the linkage structure is rotationally connected with the first connecting rod, the other end of the linkage structure is rotationally connected with the second connecting rod, the second connecting rod is in transmission connection with the braking structure, and the braking structure is used for pushing the braking mechanism to be separated from the wheel;
one end of the elastic restoring mechanism is connected with the frame, and the other end of the elastic restoring mechanism is in transmission connection with the brake mechanism and used for driving the brake mechanism to be connected with the wheels.
The invention has the technical effects that: when forward acting force is applied to the push-pull rod, the first connecting rod is driven to rotate, the screw rod is driven to move upwards, the second connecting rod and the braking structure are sequentially driven to rotate, acting force is generated on the braking mechanism in the rotation process of the braking structure, the braking mechanism is pushed to be separated from the wheel, the limiting effect of the braking mechanism on the wheel is eliminated, and therefore the trolley can be driven to move. When the push-pull rod is stopped from applying forward acting force, the elastic restoring mechanism generates pulling force to the braking mechanism and drives the braking mechanism to be connected with the wheels so as to limit the wheels, so that the trolley can be limited to move. Therefore, the automatic braking device is arranged on the trolley, the braking can be automatically released when the trolley runs, and the automatic braking can be performed when the trolley stops, so that the use of the trolley is simplified. Meanwhile, the trolley does not need to consider the problem of braking in the use process, so that the potential safety hazard of the trolley in use is reduced.
Optionally, the linkage structure includes first pull rod, screw rod and second pull rod, first pull rod with first link fixed connection, the middle part of screw rod with first pull rod rotates to be connected, the lower extreme of screw rod with second pull rod threaded connection, the second pull rod with second link rotates to be connected.
Optionally, the braking structure includes a third pin and a cam, the right end of the second link rod is fixedly connected with the third pin, the cam is rotatably connected to the wheel bracket through the third pin, and the cam is used for pushing the braking mechanism away from the wheel.
Optionally, the braking mechanism further comprises a buckle, and the lower end of the push-pull rod is detachably connected with the first connecting rod through the buckle.
Optionally, the brake mechanism comprises a brake bracket and a brake pad, the upper end of the brake bracket is rotationally connected with the frame, the lower end of the brake bracket is fixedly connected with the brake pad, and the brake pad is used for being connected with the wheel to prevent the wheel from rotating; the elastic restoring mechanism is in transmission connection with the brake bracket.
Optionally, the elastic restoring mechanism comprises an elastic structure and a screw rod, one end of the elastic structure is connected with the frame, the other end of the elastic structure is connected with the screw rod, and the screw rod is in transmission connection with the brake bracket.
Optionally, the elastic restoring mechanism comprises a protective bracket, the protective bracket is connected with the frame, and the elastic structure is arranged in the protective bracket.
Optionally, the front and back both sides of frame all are provided with brake mechanism and elastic recovery mechanism, the lower extreme of push-and-pull rod with the frame front side first link is connected, automatic brake equipment still includes drive mechanism, drive mechanism's front end with the frame front side first link transmission is connected, drive mechanism's rear end with the frame rear side first link transmission is connected.
Optionally, the transmission mechanism comprises a first protruding block, a second protruding block, a sixth pin shaft, a seventh pin shaft, an eighth pin shaft, a third connecting rod, a fourth connecting rod and a fifth connecting rod, wherein the first protruding block is arranged on the first connecting rod at the rear side of the frame, and the second protruding block is arranged on the first connecting rod at the front side of the frame; the first protruding block is rotationally connected with the third connecting rod through the sixth pin shaft, and the second protruding block is rotationally connected with the fourth connecting rod through the seventh pin shaft; the fifth connecting rod is arranged in the middle of the frame, the left end and the right end of the fifth connecting rod are respectively and fixedly connected with the third connecting rod and the fourth connecting rod, and the fifth connecting rod is rotatably connected with the frame through an eighth pin shaft.
The invention also provides an automatic braking trolley, which comprises the automatic braking device.
The invention has the technical effects that: the trolley capable of automatically braking comprises the automatic braking device, and has all technical effects, and the description is omitted herein.
Drawings
FIG. 1 is a schematic view of a structure of an automatic braking carriage according to the present invention;
FIG. 2 is an enlarged view of area A of FIG. 1;
FIG. 3 is an enlarged view of region B of FIG. 1;
FIG. 4 is a side view of the automatic braking carriage of the present invention;
FIG. 5 is an enlarged view of region C of FIG. 4;
FIG. 6 is an enlarged view of region D of FIG. 4;
fig. 7 is a top view of the automatic braking carriage of the present invention.
Reference numerals:
11. a frame; 12. a wheel support; 13. a wheel; 14. a push-pull rod; 2. a brake mechanism; 21. a brake bracket; 22. a brake pad; 23. a fourth pin; 31. a first link; 32. a linkage structure; 321. a first pull rod; 322. a screw; 323. a second pull rod; 324. a first pin; 325. a second pin; 33. a second link; 34. a braking structure; 341. a third pin; 342. a cam; 35. a buckle; 41. an elastic structure; 42. a screw rod; 43. a fifth pin; 44. a bracket; 51. a first protruding block; 52. a second protruding block; 53. a sixth pin; 54. a seventh pin; 55. an eighth pin; 56. a third link; 57. a fourth link; 58. and a fifth connecting rod.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the embodiment, an XYZ axis coordinate system is established, the forward direction of an X axis is the front direction, the reverse direction of the X axis is the rear direction, the forward direction of a Y axis is the right direction, and the reverse direction of the Y axis is the left direction; the positive direction of the Z axis is the upper direction, and the reverse direction of the Z axis is the lower direction.
In order to solve the above problems, as shown in fig. 1-7, an automatic braking device according to an embodiment of the present invention is applied to a trolley, the trolley includes a frame 11, a wheel support 12, wheels 13, and a push-pull rod 14, the wheel support 12 is disposed at the lower end of the frame 11, the wheels 13 are connected with the wheel support 12, the push-pull rod 14 is disposed on the frame 11, the automatic braking device includes a braking mechanism 2, a braking mechanism, and an elastic restoring mechanism, one end of the braking mechanism 2 is connected with the frame 11, and the other end of the braking mechanism 2 is connected with the wheels 13;
the braking mechanism comprises a first connecting rod 31, a linkage structure 32, a second connecting rod 33 and a braking structure 34, wherein the first connecting rod 31 is arranged at the rear side of the frame 11 and is rotationally connected to the frame 11, the lower end of the push-pull rod 14 is connected with the first connecting rod 31, one end of the linkage structure 32 is rotationally connected with the first connecting rod 31, the other end of the linkage structure 32 is rotationally connected with the second connecting rod 33, the second connecting rod 33 is in transmission connection with the braking structure 34, and the braking structure 34 is used for pushing the braking mechanism 2 to be separated from the wheels 13;
one end of the elastic restoring mechanism is connected with the frame 11, and the other end of the elastic restoring mechanism is in transmission connection with the brake mechanism 2 and is used for driving the brake mechanism 2 to be connected with the wheels 13.
In the present embodiment, the first link 31 is exemplarily provided at the rear side of the frame 11, and the axial direction of the first link 31 is directed in the left-right direction; the two wheel brackets 12 at the rear side of the frame 11 are provided with a brake mechanism 2, a brake mechanism and an elastic restoring mechanism; the first link 31 on the rear side of the frame 11 is connected to both the left and right links of the frame 11 in a rotating manner. Applying a forward force to the push-pull rod 14, since the lower end of the push-pull rod 14 is fixedly connected with the first link rod 31, and the first link rod 31 is rotationally connected with the frame 11, the first link rod 31 can be driven to rotate anticlockwise, the linkage mechanism is driven, the second link rod 33 is driven to rotate clockwise, and the brake structure 34 is driven to rotate clockwise; the braking structure 34, when rotated clockwise, transmits force to the braking mechanism 2 and urges the braking mechanism 2 rearward until it is disengaged from the wheel 13. Meanwhile, the brake mechanism 2 is in transmission connection with the elastic restoring mechanism, and the elastic restoring mechanism generates a backward pulling force on the elastic restoring mechanism in the backward movement process of the brake mechanism 2, so that the elastic restoring mechanism can generate a forward pulling force on the brake mechanism 2. The push-pull rod 14 stops being applied with forward force, the braking structure 34 does not act on the braking mechanism 2, and the forward pulling force generated by the elastic restoring mechanism on the braking mechanism 2 drives the braking mechanism 2 to move forward until the elastic restoring mechanism is connected with the wheels 13.
In summary, when a forward acting force is applied to the push-pull rod 14, the first connecting rod 31 is driven to rotate, the screw 322 is driven to move upwards, the second connecting rod 3 and the braking structure 34 are sequentially driven to rotate, the braking structure 34 generates acting force on the braking mechanism 2 in the rotating process, the braking mechanism 2 is pushed to be separated from the wheels 13, and the limiting effect of the braking mechanism 2 on the wheels 13 is eliminated, so that the trolley can be driven to move. When the push-pull rod 14 stops applying forward acting force, the elastic restoring mechanism generates pulling force on the brake mechanism 2 and drives the brake mechanism 2 to be connected with the wheels 13 so as to limit the wheels 13, so that the trolley can be limited to move. Therefore, the automatic braking device is arranged on the trolley, the braking can be automatically released when the trolley runs, and the automatic braking can be performed when the trolley stops, so that the use of the trolley is simplified. Meanwhile, the trolley does not need to consider the problem of braking in the use process, so that the potential safety hazard of the trolley in use is reduced.
Alternatively, as shown in fig. 2 and 5, the linkage structure 32 includes a first pull rod 321, a screw rod 322, and a second pull rod 323, where the first pull rod 321 is fixedly connected with the first link 31, the middle part of the screw rod 322 is rotationally connected with the first pull rod 321, the lower end of the screw rod 322 is in threaded connection with the second pull rod 323, and the second pull rod 323 is rotationally connected with the second link 33.
In this embodiment, the linkage 32 further includes a first pin 324 and a second pin 325, and the first tie rods 321 are welded to the first tie rods 31 in two pairs, while the two first tie rods 321 are disposed obliquely downward. The first pull rod 321 is rotatably connected with the middle part of the screw 322 through a first pin 324, and the second pull rod 323 is rotatably connected with the second connecting rod 33 through a second pin 325. The push-pull rod 14 is applied with forward force, the first connecting rod 31 rotates clockwise, drives the first pull rod 321 to rotate clockwise and upwards, and sequentially drives the first pin shaft 324, the screw 322 and the second pull rod 323 to move upwards, and then drives the second connecting rod 33 to move leftwards. Thus, by providing the first link 31 with the first tie rod 321, the screw 322 is facilitated to be connected to the first link 31 via the first tie rod 321. Meanwhile, the screw rod 322 and the second pull rod 323 are arranged, and the screw rod 322 and the second pull rod 323 are in threaded connection, so that the installation process of the linkage structure 32 is simplified.
Alternatively, as shown in fig. 2 and 5, the braking structure 34 includes a third pin 341 and a cam 342, the right end of the second link 33 is fixedly connected to the third pin 341, the cam 342 is rotatably connected to the wheel bracket 12 through the third pin 341, and the cam 342 is used for pushing the braking mechanism 2 away from the wheel 13.
In this embodiment, a forward force is applied to the push-pull rod 14, and the second link 33 moves leftward, so that the third pin 341 rotates clockwise, and the cam 342 rotates clockwise to push the brake mechanism 2 away from the wheel 13. Thereby, the effect of the braking structure 34 driving the braking mechanism 2 to unlock the wheels 13 is ensured.
Optionally, as shown in fig. 1 and 5, the braking mechanism further includes a buckle 35, and the lower end of the push-pull rod 14 is detachably connected to the first link 31 through the buckle 35.
In this embodiment, a mounting plate is illustratively provided at the lower end of the push-pull rod 14, the lower surface of the mounting plate is abutted against the outer side wall of the first link 31, and the buckle 35 is sleeved on the first link 31 and connected with the mounting plate. Therefore, the push-pull rod 14 and the first connecting rod 31 can be conveniently installed by arranging the buckle 35, and the installation process of the automatic braking device is simplified.
Alternatively, as shown in fig. 2 and 6, the brake mechanism 2 includes a brake bracket 21 and a brake pad 22, the upper end of the brake bracket 21 is rotatably connected with the frame 11, the lower end of the brake bracket 21 is fixedly connected with the brake pad 22, and the brake pad 22 is used for being connected with the wheel 13 to prevent the wheel 13 from rotating; the elastic restoring mechanism is in transmission connection with the brake bracket 21.
In this embodiment, the brake mechanism 2 further includes a fourth pin 23, and the brake bracket 21 is rotatably connected to the frame 11 through the fourth pin 23. The push-pull rod 14 is applied with forward acting force, the cam 342 is driven to rotate clockwise to apply backward acting force to the brake bracket 21, so that the brake bracket 21 is driven to rotate clockwise by taking the fourth pin 23 as a center, and the brake bracket 21 drives the brake pad 22 to move backward when rotating clockwise, so that the brake pad 22 is driven to be separated from the wheel 13, and the limit effect of the brake pad 22 on the trolley is eliminated. Simultaneously, the push-pull rod 14 stops being applied with forward acting force, the elastic restoring mechanism generates backward pulling force on the brake bracket 21, the brake bracket 21 is driven to rotate anticlockwise by taking the fourth pin shaft 23 as the center, and the brake block 22 is driven to move forward when the brake bracket 21 rotates anticlockwise, so that the brake block 22 is driven to be connected with the wheel 13 to brake the trolley. Therefore, the brake mechanism 2 is configured to be composed of the brake bracket 21 and the brake pad 22, on one hand, the brake pad 22 is utilized to brake the wheel 13, and on the other hand, the elastic restoring mechanism can drive the brake bracket 21 to drive the brake pad 22 to brake the wheel 13. Thereby ensuring the action effect of the brake mechanism 2.
Alternatively, as shown in fig. 6, the elastic restoring mechanism includes an elastic structure 41 and a screw rod 42, one end of the elastic structure 41 is connected with the frame 11, the other end of the elastic structure 41 is connected with the screw rod 42, and the screw rod 42 is in transmission connection with the brake bracket 21.
In this embodiment, the elastic restoring mechanism further includes a fifth pin 43, the fifth pin 43 is fixedly connected to the brake bracket 21, the left end of the screw rod 42 is bolted to the fifth pin 43, and meanwhile, the elastic structure 41 may be configured as a brake spring. When a forward acting force is applied to the push-pull rod 14, the cam 342 is driven to rotate clockwise to apply a backward acting force to the brake bracket 21, so that the fourth pin 23 of the brake bracket 21 is driven to rotate clockwise as a center, the brake bracket 21 drives the screw rod 42 to move backward due to the connection between the screw rod 42 and the brake bracket 21, and the screw rod 42 stretches the brake spring in the backward movement process due to the connection between the screw rod 42 and the brake spring. When the forward acting force is stopped to be applied to the push-pull rod 14, the brake spring contracts and generates forward pulling force to the screw rod 42, the screw rod 42 is driven to move forward, the brake bracket 21 is driven to rotate anticlockwise in the forward moving process of the screw rod 42, and the brake pad 22 is driven to be connected with the wheel 13; meanwhile, the braking bracket 21 applies a forward force to the braking structure 34 during the counterclockwise rotation, and drives the braking structure 34 to rotate counterclockwise to the initial position.
Optionally, as shown in fig. 6, the elastic restoring mechanism further includes a protective bracket 44, the protective bracket 44 is disposed on the frame 11, and the elastic structure 41 is disposed in the protective bracket 44.
In the present embodiment, the protective bracket 44 is illustratively welded to the lower end of the frame 11, and when the elastic structure 41 is provided as a brake spring, the brake spring is disposed in the protective bracket 44, one end of the brake spring is connected to the protective bracket 44, and the other end of the brake spring is connected to the screw rod 42. Thus, the elastic structure 41 is disposed in the protective bracket 44, and the elastic structure 41 can be protected by the protective bracket 44.
Optionally, the front and rear sides of the frame 11 are provided with a braking mechanism 2, a braking mechanism and an elastic restoring mechanism, the automatic braking device further comprises a transmission mechanism, the front end of the transmission mechanism is in transmission connection with a first connecting rod 31 on the front side of the frame 11, and the rear end of the transmission mechanism is in transmission connection with the first connecting rod 31 on the rear side of the frame 11.
In the present embodiment, the brake mechanism 2, the brake mechanism and the elastic restoring mechanism are exemplarily identical in structure on the front and rear sides of the frame 11, that is, the brake mechanism 2, the brake mechanism and the elastic restoring mechanism are disposed at the four wheel brackets 12 of the trolley. When forward acting force is applied to the push-pull rod 14, the first connecting rod 31 at the rear side of the frame 11 is driven to rotate anticlockwise, and the first connecting rod 31 at the front side of the frame 11 can be driven to rotate clockwise through a transmission mechanism, so that the first connecting rod 321 is driven to rotate clockwise; when the first pull rod 321 rotates clockwise, the first pin 324 is driven to move upwards, and the screw 322 is driven to move upwards; when the screw 322 moves upwards, the second pin shaft 325 is driven to move upwards, and the second pull rod 323 is driven to move upwards; when the second pull rod 323 moves upwards, the second connecting rod 33 is driven to rotate anticlockwise, and the braking structure 34 is driven to rotate anticlockwise; the braking structure 34, when rotated counter-clockwise, transmits force to the braking mechanism 2 and urges the braking mechanism 2 forward until it is disengaged from the wheel 13. Therefore, the front side and the rear side of the frame 11 are simultaneously provided with the brake mechanism 2 and the elastic restoring mechanism, which can brake the wheels 13 on the front side and the rear side of the frame 11 at the same time, thereby improving the braking effect on the trolley. Simultaneously, the front side and the rear side of the frame 11 are provided with the braking mechanisms at the same time, and the braking mechanisms at the front side and the rear side of the frame 11 are connected in a transmission way by utilizing the transmission mechanism, so that the wheels 13 at the front side and the rear side of the frame 11 can be unlocked at the same time, and the using process of the trolley is simplified.
Alternatively, as shown in fig. 1, 3, 5 and 7, the transmission mechanism includes a first protruding block 51, a second protruding block 52, a sixth pin 53, a seventh pin 54, an eighth pin 55, a third link 56, a fourth link 57 and a fifth link 58, the first protruding block 51 is disposed on the first link 31 on the rear side of the frame 11, and the second protruding block 52 is disposed on the first link 31 on the front side of the frame 11; the first protruding block 51 is rotatably connected with the third connecting rod 56 through a sixth pin 53, and the second protruding block 52 is rotatably connected with the fourth connecting rod 57 through a seventh pin 54; the fifth connecting rod 58 is arranged in the middle of the frame 11, the left and right ends of the fifth connecting rod 58 are respectively and fixedly connected with the third connecting rod 56 and the fourth connecting rod 57, and the fifth connecting rod 58 is rotatably connected with the frame 11 through the eighth pin shaft 55.
In this embodiment, when a forward force is applied to the push-pull rod 14, the first link 31 is driven to rotate clockwise, the first protruding block 51 is driven to rotate clockwise, the fifth link 58 is driven to rotate relative to the frame 11 about the eighth pin 55 (which can be regarded as counterclockwise rotation in a plan view), and since the third link 56 and the fourth link 57 are fixedly connected with the left and right ends of the fifth link 58, the third link 56 can be driven to move forward and the fourth link 57 can be driven to move backward, so that the first link 31 on the front side of the frame 11 is driven to rotate clockwise, and the brake pad 22 on the front side of the frame 11 is driven to move forward and away from the wheel 13 on the front side of the frame 11. Therefore, by arranging the transmission mechanism into the structure formed by the first protruding block 51, the second protruding block 52, the sixth pin shaft 53, the seventh pin shaft 54, the eighth pin shaft 55, the third connecting rod 56, the fourth connecting rod 57 and the fifth connecting rod 58, when forward acting force is applied to the push-pull rod 14, the brake pads 22 on the front side and the rear side of the frame 11 can be simultaneously driven to be separated from the wheels 13 on the front side and the rear side of the frame 11, the action effect of the transmission mechanism is ensured, and the use of the trolley is simplified.
Another embodiment of the invention is an automatic braking trolley comprising an automatic braking device as described above.
In this embodiment, the present invention includes the automatic braking device as described above, which has all technical effects and is not described herein.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (8)
1. An automatic braking device is applied to a trolley, the trolley comprises a frame (11), a wheel bracket (12), wheels (13) and a push-pull rod (14), the wheel bracket (12) is arranged at the lower end of the frame (11), the wheels (13) are connected with the wheel bracket (12), the push-pull rod (14) is arranged on the frame (11), and the automatic braking device is characterized in that,
the automatic braking device comprises a braking mechanism (2), a braking mechanism and an elastic restoring mechanism, wherein one end of the braking mechanism (2) is connected with the frame (11), and the other end of the braking mechanism (2) is connected with the wheels (13);
the brake mechanism comprises a first connecting rod (31), a linkage structure (32), a second connecting rod (33) and a brake structure (34), wherein the first connecting rod (31) is rotationally connected to the frame (11), the lower end of the push-pull rod (14) is connected with the first connecting rod (31), the linkage structure (32) comprises a first pull rod (321), a screw rod (322) and a second pull rod (323), the first pull rod (321) is fixedly connected with the first connecting rod (31), the middle part of the screw rod (322) is rotationally connected with the first pull rod (321), the lower end of the screw rod (322) is in threaded connection with the second pull rod (323), the second pull rod (323) is rotationally connected with the second connecting rod (33), the brake structure (34) comprises a third pin shaft (341) and a cam (342), the right end of the second connecting rod (33) is fixedly connected with the third pin shaft (341), and the cam (342) is rotationally connected with the wheel (341) through the third pin shaft (341) to be far away from the wheel (12) through the bracket (342);
one end of the elastic restoring mechanism is connected with the frame (11), and the other end of the elastic restoring mechanism is in transmission connection with the brake mechanism (2) and is used for driving the brake mechanism (2) to be connected with the wheels (13).
2. An automatic braking device according to claim 1, characterized in that said braking mechanism further comprises a catch (35), the lower end of said push-pull rod (14) being detachably connected to said first link (31) by means of said catch (35).
3. An automatic braking device according to claim 1, characterized in that the braking mechanism (2) comprises a braking bracket (21) and a braking pad (22), the upper end of the braking bracket (21) is rotationally connected with the frame (11), the lower end of the braking bracket (21) is fixedly connected with the braking pad (22), and the braking pad (22) is used for being connected with the wheel (13) to prevent the wheel (13) from rotating; the elastic restoring mechanism is in transmission connection with the brake bracket (21).
4. An automatic braking device according to claim 3, characterized in that the elastic restoring mechanism comprises an elastic structure (41) and a screw rod (42), one end of the elastic structure (41) is connected with the frame (11), the other end of the elastic structure (41) is connected with the screw rod (42), and the screw rod (42) is in transmission connection with the braking bracket (21).
5. The automatic braking device according to claim 4, characterized in that said elastic return mechanism comprises a protective bracket (44), said protective bracket (44) being connected to said frame (11), said elastic structure (41) being arranged inside said protective bracket (44).
6. The automatic braking device according to claim 1, wherein the front and rear sides of the frame (11) are provided with the braking mechanism (2), the braking mechanism and the elastic restoring mechanism, the lower end of the push-pull rod (14) is connected with the first connecting rod (31) at the front side of the frame (11), the automatic braking device further comprises a transmission mechanism, the front end of the transmission mechanism is in transmission connection with the first connecting rod (31) at the front side of the frame (11), and the rear end of the transmission mechanism is in transmission connection with the first connecting rod (31) at the rear side of the frame (11).
7. The automatic braking device according to claim 6, characterized in that the transmission mechanism comprises a first protruding block (51), a second protruding block (52), a sixth pin (53), a seventh pin (54), an eighth pin (55), a third link (56), a fourth link (57) and a fifth link (58), the first protruding block (51) being provided on the first link (31) on the rear side of the frame (11), the second protruding block (52) being provided on the first link (31) on the front side of the frame (11); the first protruding block (51) is rotationally connected with the third connecting rod (56) through the sixth pin shaft (53), and the second protruding block (52) is rotationally connected with the fourth connecting rod (57) through the seventh pin shaft (54); the fifth connecting rod (58) is arranged in the middle of the frame (11), the left end and the right end of the fifth connecting rod (58) are respectively fixedly connected with the third connecting rod (56) and the fourth connecting rod (57), and the fifth connecting rod (58) is rotationally connected with the frame (11) through an eighth pin shaft (55).
8. An automatic braking trolley comprising an automatic braking device according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211071662.9A CN115320650B (en) | 2022-09-02 | 2022-09-02 | Automatic brake device and automatic brake trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211071662.9A CN115320650B (en) | 2022-09-02 | 2022-09-02 | Automatic brake device and automatic brake trolley |
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| CN115320650A CN115320650A (en) | 2022-11-11 |
| CN115320650B true CN115320650B (en) | 2023-07-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN87203839U (en) * | 1987-03-18 | 1988-01-27 | 张源深 | Automatic brake device for mine cars |
| JP6276948B2 (en) * | 2013-09-02 | 2018-02-07 | 入江工業株式会社 | Truck trolley |
| CN212148823U (en) * | 2020-05-08 | 2020-12-15 | 中铁十四局集团第五工程有限公司 | Railway small flat car |
| CN214607502U (en) * | 2021-03-15 | 2021-11-05 | 湖南旭瑞智能技术有限公司 | Anti-slip trolley |
| CN113276902A (en) * | 2021-06-25 | 2021-08-20 | 中铁五局集团第六工程有限责任公司 | Brake device for small flat car of track line |
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