CN210363765U - Parking brake system for loader - Google Patents
Parking brake system for loader Download PDFInfo
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- CN210363765U CN210363765U CN201921057284.2U CN201921057284U CN210363765U CN 210363765 U CN210363765 U CN 210363765U CN 201921057284 U CN201921057284 U CN 201921057284U CN 210363765 U CN210363765 U CN 210363765U
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Abstract
The utility model discloses a parking brake system for a loader, which relates to the technical field of engineering machinery braking and comprises a cable swinging disc, a positioning mechanism and a brake, wherein the brake is connected with the cable swinging disc through a brake cable, and a brake control part of the cable swinging disc is a pedal connected with the cable swinging disc through an extension arm; the positioning mechanism comprises a tension spring for connecting the cable swinging disc and the frame, a brake rod with a pawl, a torsion spring for meshing the pawl and the ratchet at the outer edge of the cable swinging disc, and a limiting plate for limiting the motion track of the brake rod; the torsion spring is sleeved on the mounting shaft of the frame, one torsion arm of the torsion spring is fixed on the frame, and the other torsion arm is inserted on the brake rod; the brake rod is provided with a long hole, the length direction of the long hole faces the limiting plate, and a pin shaft inserted into the long hole is arranged on the supporting plate. The utility model provides a current loader hand brake parking brake handle inconvenient problem.
Description
Technical Field
The utility model belongs to the technical field of engineering machine tool braking technique and specifically relates to a parking braking system for loader.
Background
At present, all the mechanical parking brakes of the domestic loaders are in a structural form of hand brake pulling braking, and because a flexible shaft operating lever or a pilot operating handle is arranged on the right side of the seat, the hand brake parking brakes of the domestic loaders can only be arranged on the left side of the seat, and the structural form and the arrangement have the following problems: 1. the hand brake is arranged on the left side of the seat, so that the parking brake can be operated only by the left hand, and the operation flexibility of a driver is greatly limited under the condition that the left hand operates steering and the right hand controls the action of the working device, and the operation is inconvenient; 2. the limited operating force of the arm leads to a larger force arm of the hand brake structure, the up-and-down operating stroke of the arm is longer, and the hand brake operation is easy to exceed an ergonomic comfort area in a limited cab space, such as needing to bend down or other actions to complete parking brake, and the operation is uncomfortable; 3. the arrangement position of the hand brake is generally fixed relative to the cab, and the height and the body of each driver are different, so that the adjustment positions of the seats are different, and the hand brake cannot meet the requirement that all drivers and passengers have reasonable operation comfortable areas in the front and back positions; 4. the existing hand brake has the disadvantages of large volume, space occupation, heavy structure and high material cost; 5. the left side of the cab is generally provided with an getting-on/off passage, and the hand brake is operated to easily block the passing-in/out passage, so that potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a parking braking system for loader, this kind of system can solve the inconvenient problem of current loader hand brake parking brake manipulation.
In order to solve the above problem, the utility model discloses a technical scheme is: the parking brake system for the loader comprises a cable swinging disc, a positioning mechanism and a brake, wherein the cable swinging disc is hinged to a supporting plate, the positioning mechanism limits the position of the cable swinging disc, the brake is arranged below the cable swinging disc, the brake is connected with the cable swinging disc through a brake cable, the cable swinging disc is provided with a brake operating piece, and the brake operating piece is a pedal connected with the cable swinging disc through an extension arm; the positioning mechanism comprises a tension spring for connecting the cable swinging disc and the frame, a brake rod with a pawl, a torsion spring for meshing the pawl and the ratchet at the outer edge of the cable swinging disc, and a limiting plate for limiting the motion track of the brake rod; the torsion spring is sleeved on the mounting shaft of the frame, one torsion arm of the torsion spring is fixed on the frame, and the other torsion arm is inserted on the brake rod; the brake rod is provided with a long hole, the length direction of the long hole faces the limiting plate, and a pin shaft inserted into the long hole is arranged on the supporting plate.
In the technical solution of the parking brake system for a loader, a more specific technical solution may be: the supporting plate is provided with a limiting hole facing the extension arm, and the upper end of the extension arm is provided with a limiting pin inserted into the limiting hole.
Furthermore, the upper end of the limiting pin is a cone, and the aperture of the limiting hole is smaller than the diameter of the large end of the cone.
Furthermore, the extension arm is bent upwards in an inclined manner towards the driving position.
Furthermore, the connection point of the tension spring and the frame is lower than the connection point of the tension spring and the limiting plate.
Furthermore, the limiting plate comprises a side plate integrally formed with the cable swinging disc and an upper end plate connecting the upper end of the side plate with the supporting plate, and one end of the brake rod is inserted into a space enclosed by the side plate, the upper end plate and the supporting plate; the contact surface of the brake rod and the upper end plate is two curved surfaces which slide relatively, and the bending directions of the two curved surfaces are opposite.
Furthermore, one end of the side plate, which faces the pedal, is provided with a hanging lug connected with the tension spring.
Furthermore, the cable swing disc is hinged with a cable mounting plate, and the upper end of the brake cable is mounted on the cable mounting plate.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
1. the pedal is used as a brake operating member, the brake can be arranged below the front desk of the cab, and the left hand operation is not needed when the driver steps on the pedal by the right foot during parking brake, so that the operation is convenient; in addition, because the stepping force of the foot is larger than that of the hand, the range of the pedal on the brake can be reduced, and the structure of the brake can be compact, so that the operation comfort is greatly improved on the basis of meeting the ergonomics of different drivers, and the channel safety of the cab is also ensured. The arrangement of the structure, the position and the connection relation of all the parts facilitates the structural arrangement of the brake system in the cab, and the reliability is higher.
2. The limiting pin with the cone body at the upper end is arranged on the extending arm of the pedal, so that the limiting pin is matched with the limiting hole in the supporting plate, the impact force of the extending arm generated when the tension spring is reset on the supporting plate can be reduced, the pedal is stably reset, and the service life is prolonged.
3. The extension arm of the pedal is bent upwards in an inclined way towards the direction of the driving position, so that the pedal is more convenient to step and apply force.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the parking brake system for a loader.
Detailed Description
The invention will be described in more detail with reference to the following embodiments:
the parking brake system for the loader shown in fig. 1 comprises a pedal 1, an extension arm 2, a support plate 4, a cable swinging disc 5, a tension spring 12, a limit plate 7, a brake rod 11, a torsion spring 10, a cable mounting plate 13, a brake cable 14 and a brake 15, wherein the support plate 4 is vertically arranged, the cable swinging disc 5 is hinged to the side surface of the support plate 4, and a hinged shaft 6 of the support plate 4 and the cable swinging disc 5 is rigidly connected and fixed on a frame of the whole loader; the cable swinging disc 5 extends outwards along the driving position direction to form an extending arm 2 which is inclined and bent upwards, and the tail end of the extending arm 2 is provided with a pedal 1; the upper end of the extension arm 2 is provided with an upward limiting pin 3 at a position close to the inhaul cable swing disc 5, a limiting hole inserted into the limiting pin 4 is formed in the bent edge of the support plate 4, the upper end of the limiting pin 4 is a cone, and the aperture of the limiting hole is smaller than the diameter of the large end of the cone. A limiting plate 7 is arranged at the position, close to the extension arm 2, of the upper end of the cable swinging disc 5, the limiting plate 7 is provided with a side plate 7-2 extending out of the cable swinging disc 5 upwards, the side plate 7-2 is parallel to the plate surface of the supporting plate 4, and the upper end of the side plate 7-2 is provided with an upper end plate 7-3 connected with the supporting plate 4; one end of the side plate 7-2 close to the extension arm 2 is provided with a hanging lug 7-1 vertical to the surface of the side plate 7-2, one end of a tension spring 12 is hung on the hanging lug 7-1, the other end of the tension spring is connected and fixed on the vehicle frame, and the connection point of the tension spring 12 and the vehicle frame is lower than the connection point of the tension spring 12 and the hanging lug 7-1 of the limit plate 7. The lower part of the cable swinging disc 5 is hinged with a cable mounting plate 13, one end of a brake cable 14 is connected with the cable mounting plate 13, and the other end is connected with a brake 15. The outer edge of the cable swinging disc 5 is provided with a section of ratchet 5-1, and the section of ratchet 5-1 is positioned between the limiting plate 7 and the cable mounting plate 13. A brake lever 11 is arranged on the support plate 4, and the brake lever 11 is provided with a pawl 11-2 engaged with the ratchet 5-1; one end of the brake rod 11 is inserted into a space enclosed by the side plate 7-2, the upper end plate 7-1 and the support plate 4, the other end of the brake rod is inserted into a torsion arm of the torsion spring 10, the torsion spring 10 is sleeved on the mounting shaft 9 of the frame, and the other torsion arm of the torsion spring 10 is fixed on the frame; a pin shaft 8 sleeved with the brake rod 11 is fixedly arranged on the support plate 4, the pin shaft 8 is inserted into a long hole 11-1 of the brake rod 11, and the length direction of the long hole 11-1 faces the limiting plate 7; the brake lever 11 is kept in contact with the upper end plate 7-3 under the action of the torsion spring 10, and the contact surface of the brake lever 11 and the upper end plate 7-3 is two curved surfaces which slide relatively, and the bending directions of the two curved surfaces are opposite, so that the relative sliding of the brake lever 11 and the upper end plate 7-3 is ensured.
When the pedal 1 works, the pedal 1 is pulled by the tension spring 12 in a natural state and is limited by the matching of the support plate 4 and the limiting pin 3; the brake lever 11 is provided with a long hole 11-1 which can rotate around the pin shaft 8 and is limited by the limiting plate 7, and the brake lever 11 is attached to the ratchet surface of the cable swinging disc 5 under the action of the torsion spring 10; at the moment, the upper end of a brake cable 14 on the zipper swing disc 5 is at the lowest position, and the brake 15 does not brake; when the pedal 1 is stepped on, the pedal 1 rotates around a hinge shaft 6, a ratchet 5-1 on a cable swinging disc 5 is meshed with a pawl 11-2 of a brake rod 11, when the pedal 1 is released, the pedal 1 presses the pawl 11-2 of the brake rod 11 under the tension of a tension spring 12 and enables the brake rod 11 to move to the rightmost position in the drawing, the tension spring 12 overcomes the acting force of a torsion spring 10 to lock a retaining mechanism of the pedal 1, and at the moment, a brake cable 14 provides upward tension to enable a brake 15 to brake; when the pedal 1 is stepped on again, the ratchets 5-1 of the cable swinging disc 5 are loosened from the pawls 11-2 of the brake lever 11, the brake lever 11 is selected clockwise under the action of the torsion spring 10 and moves to the leftmost position, when the pedal 1 is loosened, the pedal 1 rotates reversely to return to the original position, the upper end plate of the limiting plate 7 presses the brake lever 11 in the process, and the brake lever 11 is kept attached to the cable swinging disc 5 under the action of the torsion spring 10.
The parking brake system brake for the loader only needs to be stepped once for braking, and then braking is released by stepping, so that the operation is simple, convenient and comfortable, the structure is compact, and the reliability is high; so that the parking brake operation becomes simple and comfortable; while also providing maximum cab operating space.
Claims (8)
1. The utility model provides a parking braking system for loader, including articulate cable swing dish in the backup pad, restriction positioning mechanism and the setting in cable swing dish below the stopper of dish position, the stopper through the braking cable with cable swing dish is connected, cable swing dish is provided with braking control piece, its characterized in that: the brake operating piece is a pedal connected with the cable swinging disc through an extension arm; the positioning mechanism comprises a tension spring for connecting the cable swinging disc and the frame, a brake rod with a pawl, a torsion spring for meshing the pawl and the ratchet at the outer edge of the cable swinging disc, and a limiting plate for limiting the motion track of the brake rod; the torsion spring is sleeved on the mounting shaft of the frame, one torsion arm of the torsion spring is fixed on the frame, and the other torsion arm is inserted on the brake rod; the brake rod is provided with a long hole, the length direction of the long hole faces the limiting plate, and a pin shaft inserted into the long hole is arranged on the supporting plate.
2. The parking brake system for a loader of claim 1, wherein: the supporting plate is provided with a limiting hole facing the extension arm, and the upper end of the extension arm is provided with a limiting pin inserted into the limiting hole.
3. The parking brake system for a loader of claim 2, wherein: the upper end of the limiting pin is a cone, and the aperture of the limiting hole is smaller than the diameter of the large end of the cone.
4. The parking brake system for a loader according to any one of claims 1 to 3, wherein: the extension arm is bent upwards in an inclined manner towards the direction of the driving position.
5. The parking brake system for a loader of claim 4, wherein: and the connection point of the tension spring and the frame is lower than the connection point of the tension spring and the limiting plate.
6. The parking brake system for a loader of claim 5, wherein: the limiting plate comprises a side plate integrally formed with the cable swinging plate and an upper end plate for connecting the upper end of the side plate with the supporting plate, and one end of the brake rod is inserted into a space enclosed by the side plate, the upper end plate and the supporting plate; the contact surface of the brake rod and the upper end plate is two curved surfaces which slide relatively, and the bending directions of the two curved surfaces are opposite.
7. The parking brake system for a loader of claim 6, wherein: one end of the side plate, which faces the pedal, is provided with a hanging lug connected with the tension spring.
8. The parking brake system for a loader of claim 7, wherein: the upper end of the brake cable is arranged on the cable mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921057284.2U CN210363765U (en) | 2019-07-08 | 2019-07-08 | Parking brake system for loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921057284.2U CN210363765U (en) | 2019-07-08 | 2019-07-08 | Parking brake system for loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210363765U true CN210363765U (en) | 2020-04-21 |
Family
ID=70269935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921057284.2U Active CN210363765U (en) | 2019-07-08 | 2019-07-08 | Parking brake system for loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210363765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112278139A (en) * | 2020-11-05 | 2021-01-29 | 重庆宗申创新技术研究院有限公司 | Parking system and vehicle |
-
2019
- 2019-07-08 CN CN201921057284.2U patent/CN210363765U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112278139A (en) * | 2020-11-05 | 2021-01-29 | 重庆宗申创新技术研究院有限公司 | Parking system and vehicle |
| CN112278139B (en) * | 2020-11-05 | 2022-04-08 | 重庆宗申创新技术研究院有限公司 | Parking system and vehicle |
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