Parking brake system for mobile garden machinery

Abstract

This invention discloses a parking brake system for mobile garden machinery, comprising: a braking mechanism including a cable assembly and a braking assembly, the braking assembly being fixed to the frame of the garden machinery and connected to one end of the cable assembly; and a control mechanism including a sliding plate and a drive assembly, the drive assembly driving the sliding plate to reciprocate; the control mechanism controlling the braking mechanism, the other end of the cable assembly being connected to the sliding plate, the sliding plate driving the cable assembly to brake or release the wheels of the garden machinery when reciprocated by the drive assembly; the parking brake system provided by this invention, by adding a control mechanism and a braking mechanism to the frame of the garden machinery, allows the operator to lock and unlock the wheel hubs when parking, thereby achieving parking braking; at the same time, the system improves the stability and safety of the entire machine during operation and enhances the user experience.

Description

Technical Field

[0001] This invention relates to the field of garden machinery manufacturing technology, specifically to a parking brake system for mobile garden machinery. Background Technology

[0002] Currently, most mobile garden machinery on the market uses a support frame on the vehicle body to support and secure the machine when parked. However, due to the large weight of mobile garden machinery and the significant vibrations it generates during operation, relying solely on the support frame results in poor overall stability. This is especially problematic when operating on uneven ground, where the machinery is prone to displacement due to vibrations, posing a potential safety hazard.

[0003] Therefore, it is necessary to improve the parking structure of existing mobile garden machinery to ensure the overall stability and safety of the machinery during operation. Summary of the Invention

[0004] In view of this, the present invention discloses a parking brake system for mobile garden machinery. This braking system, by installing a control mechanism and a braking mechanism on the frame of the garden machinery, allows the operator to control the braking mechanism through the control mechanism when the mobile garden machinery needs to be parked, so as to lock the wheels, thereby greatly improving the stability and safety of the whole machine during operation.

[0005] This invention discloses a parking brake system for mobile garden machinery, comprising:

[0006] A braking mechanism, comprising a cable assembly and a braking assembly, wherein the braking assembly is fixed to the frame of the garden machinery and connected to the end of the cable assembly;

[0007] A control mechanism, comprising a slide plate and a drive assembly, the drive assembly being used to drive the slide plate to reciprocate;

[0008] The control mechanism is used to control the braking mechanism. The other end of the cable assembly is connected to the slide plate. When the slide plate is driven to reciprocate by the drive assembly, it drives the cable assembly to brake or release the wheels of the garden machinery.

[0009] In this application, both the braking mechanism and the control mechanism are component combinations formed by the movable connection of multiple components. The braking mechanism is mainly used to brake or release the wheels of the garden machinery, while the control mechanism is mainly used to control the braking mechanism, allowing the braking mechanism to brake or release the wheels of the garden machinery according to the operator's needs. The braking mechanism includes a braking component and a cable component. The braking component is installed near the wheels of the garden machinery and is connected and fixed to the cable component. The braking component can be a hub brake structure, disc brake structure, etc., using conventional technologies. In this embodiment, a hub brake structure is mainly used, which is prior art and will not be described in detail here. The control mechanism includes a drive component and a sliding plate. The drive component mainly applies an external force to make it contact the sliding plate first, and then applies a force to the sliding plate during the contact process to drive the sliding plate to reciprocate. The drive component can be directly controlled by the operator or controlled by a controller through a sensor. One end of the cable component in the braking mechanism is connected and fixed to the sliding plate. The other end is connected and fixed to the braking assembly. The movement of the slide plate is mainly used to tighten or loosen the cable, thereby controlling the wheels of the garden machinery. The cable assembly includes a left wheel cable and a right wheel cable. The cable assembly is similar to the cable used in the braking mechanism of an automatic car and is existing technology, so it will not be described in detail here. The slide plate, as the driven component, is driven by the drive assembly to move back and forth, thereby tightening or loosening the cable assembly connected to the slide plate, thus achieving braking or releasing the wheels. The reciprocating movement of the slide plate is along the direction of tightening the cable. The direction of tightening the cable refers to the direction in which the slide plate moves after being driven by the drive assembly. Since the length of the cable is fixed, there are fixed lugs at both ends. When the slide plate moves under force, the cable connected to the end of the slide plate will also move with the slide plate, which will tighten the braking assembly. Similarly, when the cable is not under the traction of the slide plate, it can be reset by the reset component set in the mechanism and drive the slide plate to reset. Thus, the tightening or loosening of the cable assembly by the slide plate achieves locking or releasing the wheels. By applying the parking brake system in this embodiment to the wood splitter, the stability and safety of the machine during operation are greatly improved, enhancing the user experience. At the same time, the parking brake system is also applicable to other large garden machinery similar to the wood splitter and has the same beneficial effects.

[0010] Furthermore, the skateboard is provided with a braking groove and a release braking groove, and the drive assembly includes a brake lever and a release braking lever; wherein the braking groove and the release braking groove are respectively disposed on the contact side between the skateboard and the drive assembly, and the brake lever and the release braking lever are used to provide the skateboard with the driving force to tighten the cable assembly; the braking groove is provided with an inclined surface on the side near the brake lever, and the inclined surface I is provided with a locking groove near the bottom of the braking groove, and the locking groove is arranged laterally along the moving direction of the skateboard; the release braking groove is provided with an inclined surface II on the side near the release braking lever, and the inclination angle of the inclined surface II is greater than the inclination angle of the inclined surface I. The brake groove is an irregularly shaped groove. An inclined surface I, which mates with the brake lever, is provided on the side of the brake groove where it contacts the brake lever. A locking groove is located below inclined surface I. The slide plate moves by receiving the driving force of the brake lever through inclined surface I in the brake groove. The locking groove is used to limit the direction of the brake lever, locking it within the slide plate. The locking groove is horizontally positioned within the brake groove, and its opening direction is opposite to the direction of the tension cable. The locking groove consists of a locking groove vertical surface, a locking groove barb surface, and the bottom surface of the brake groove. The brake release groove is a trapezoidal groove, similar to the brake groove, and also has an inclined surface II, which mates with the brake release lever, on the side where it contacts the brake release lever. However, the tilt angle of inclined surface II is much greater than that of inclined surface I. This is because the brake release lever is used to drive the skateboard to release the braking state of the wheels after the brake lever is locked in the locking groove of the brake groove. The tilt angle of inclined surface I is generally set to 30-50°, while the tilt angle of inclined surface II is generally set to 60-80°. The tilt angles of inclined surface I and inclined surface II can generally be selected and adapted according to the design displacement of the skateboard during the design stage. Therefore, the larger the tilt angle of inclined surface II, the less skateboard displacement is required to release the brake. At the same time, the lateral width of the brake release groove must meet the normal movement of the brake release lever in the groove.

[0011] Furthermore, the brake lever moves along the depth direction of the brake groove and drives the slide plate 2 to move in the direction of tightening the cable via the inclined surface I. When the brake lever exceeds the inclined surface I in the depth direction of the brake groove, it enters the locking groove for locking. When releasing the brake, the brake lever moves in the direction of releasing the brake groove and continues to move in the direction of tightening the cable via the inclined surface II until the brake lever disengages from the locking groove, thus releasing the brake. When parking brake is required, the brake lever is driven along the inclined surface I of the brake groove to push the slide plate in the direction of tightening the cable. After the brake lever exceeds the inclined surface I in the depth direction of the brake groove, it will reach the bottom of the brake groove, and then the return spring on the slide plate will... Under the action of the locking mechanism, the slide moves in the opposite direction of the tension cable until the locking groove surface contacts the brake lever. At the same time, the brake lever is locked in the brake groove by the hook surface of the locking groove, thus the slide tightens the cable and puts the wheel in a braking state. When it is necessary to release the brake, the release brake lever pushes the slide along the inclined surface II to continue moving in the direction of the tension cable. After the release brake lever reaches the bottom surface of the release brake groove, the brake lever disengages from the hook surface of the locking groove on the slide. Under the action of the return spring on the brake lever, the brake lever returns to the initial position. At the same time, under the action of the return spring on the release brake lever, the release brake lever returns to the initial position, completing the release of the brake.

[0012] Furthermore, the control mechanism also includes a control box for mounting the slide plate and drive assembly. The control box is connected and fixed to the garden machinery frame. The control box has through holes for mounting and limiting the drive assembly and slide plate. The control box is a rectangular structure welded from multiple metal plates and is mainly used to mount the slide plate and drive assembly of the control mechanism. The bottom of the control box is fixed to the frame of the garden machinery by means of screw drilling or welding. The top surface of the control box and the opening on the opposite side connected to the drive assembly are provided to facilitate the installation of the slide plate and drive assembly. The through holes on the other side plates of the control box are respectively clearance holes for avoiding and releasing the brake lever, pin holes for mounting the slide plate, and clearance holes for connecting the cable and the slide plate. The pin holes for mounting the slide plate and the clearance holes for connecting the cable and the slide plate are respectively arranged on the opposite side plates of the control box.

[0013] Furthermore, the skateboard has a connecting part and a pin part at both ends in the direction of tensioning the cable. The connecting part is used to fix the cable assembly to the skateboard, and the pin part is used to connect the skateboard to the control box and assist in guiding the skateboard when it reciprocates. There are two connecting parts for the skateboard, one of which is located near the cable assembly in the direction of tensioning the cable and is connected and fixed to the left wheel cable and the right wheel cable respectively. The pin part of the skateboard is located at the other end of the skateboard in the direction of tensioning the cable. The skateboard is inserted into the pin hole on the control box through the pin part, realizing the connection between the control box and the skateboard. At the same time, the pin part can also guide the skateboard when it reciprocates, so that the skateboard will not fall off the control box when it moves.

[0014] Furthermore, the drive assembly also includes a brake pedal and a release brake pedal, which are respectively connected to the ends of the brake lever and the release brake lever. The drive assembly in this invention uses a combination pedal. By connecting the brake pedal to the brake lever and the release brake pedal to the release brake lever, the operator can drive the brake lever or release brake lever by stepping on the pedal and apply force to the skateboard to achieve braking or releasing control of the wheels. The brake pedal and the release brake pedal need to be positioned in a location that is easy for the operator to operate.

[0015] Furthermore, elastic elements are provided between the control box and the drive assembly, and between the control box and the slide plate. The elastic elements are used to provide elastic force for the reset of the drive assembly and the slide plate. In this invention, the elastic element is a spring, which is mainly used to provide elastic force for the reset of the slide plate, the brake pedal, and the release brake pedal. The reset spring of the slide plate is set on the pin portion between the control box and the slide plate, while the reset springs of the brake pedal and the release brake pedal are respectively set on the brake lever and the release brake lever between the brake pedal and the control box.

[0016] Furthermore, the brake lever and release lever have a driving part at the bottom of the end away from the brake pedal and release brake pedal, respectively. The driving part drives the slide plate to move in the direction of tensioning the cable by contacting inclined surface I or inclined surface II. The driving part is formed by the bottom of the brake lever and release brake lever extending outward on the side facing the slide plate. When parking brake is required, by pressing the brake pedal, the paddle on the brake lever contacts the inclined surface I on the slide plate, and a driving force is applied to drive the slide plate to move. Similarly, when brake release is required, by pressing the release brake pedal, the paddle on the release brake lever contacts the inclined surface II on the slide plate, and a driving force is applied to drive the slide plate to move until the paddle leaves the locking groove on the slide plate. In addition, since both the brake lever and release brake lever enter the control box through the clearance hole on the control box, after the brake is released, the brake lever and release brake lever are reset by the elastic force of the return spring. In order to prevent the brake lever and release brake lever from being ejected from the control box, the driving part is used to axially limit the brake lever and release brake lever and keep them in the control box.

[0017] Furthermore, the drive unit is arc-shaped or has rounded corners on the contact side with inclined surfaces I and II. By making the drive unit arc-shaped or rounding the corners on the contact side, the contact between the drive unit and the inclined surfaces can be changed from surface-to-surface contact to line-to-surface contact, thereby reducing the sliding friction between the drive unit and the inclined surfaces and making the resistance experienced by the drive unit on the brake lever and release lever when driving the slide plate to move less.

[0018] Furthermore, the braking assembly includes brake pads and a connecting rod. One end of the connecting rod is fixed to the frame of the garden machinery, and the brake pads are fixed to the other end of the connecting rod. The brake pads have a braking surface, and the brake pads brake or release the wheel by contacting or disengaging from the wheel hub through the braking surface. Each wheel of the garden machinery has two sets of connecting rods and brake pads, respectively located on both sides of the wheel hub. The upper end of the connecting rod is connected and fixed to a connecting part on the frame of the garden machinery, and the lower end of the connecting rod is connected to the brake pads. The upper connecting parts of the two sets of connecting rods are provided with a connecting part for the vehicle... Above the wheel hub, a spring is installed between the upper end of the two sets of connecting rods and the wheel hub. The spring can be used to limit the rotation angle of the connection and also to reset the brake shoes when the brake is released. The upper end of the brake shoes is fixed to the connecting rod, and the lower end is provided with a connecting part. The cable passes through the connecting part of the two sets of brake shoes. By tightening or loosening the cable, the lever principle is used to move the two sets of brake shoes closer to or away from the wheel hub. The brake shoes have a braking surface on the side facing the wheel hub. The wheel is braked by the braking surface of the two sets of brake shoes contacting the wheel hub. When the braking surface leaves the wheel hub, the brake is released.

[0019] The beneficial effects of this application are as follows: The parking brake system for mobile garden machinery provided in this application adds a control mechanism and a braking mechanism to the frame of the wood splitter, allowing the operator to control the braking mechanism to lock and unlock the wheel hubs when parking, thereby achieving parking brake. After this parking brake system is applied to the wood splitter, it greatly improves the stability and safety of the entire machine during operation and enhances the user experience. At the same time, this parking brake system is also applicable to other mobile garden machinery with similar structures to the wood splitter and has the same beneficial effects. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the parking brake device in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the connection between the parking brake device and the left wheel in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the connection between the parking brake device and the right wheel in an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the control mechanism in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the braking mechanism of the right wheel in an embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the braking mechanism of the left wheel in an embodiment of this application;

[0027] The attached diagrams are labeled as follows: 1: Brake pedal; 2: Slide plate; 3: Right cable; 4: Left cable; 5, 6: Right wheel brake pads; 7: Right support hub; 8: Release brake pedal; 9, 10, 15, 20, 24: Return springs; 12, 13: Left wheel brake pads; 14: Left support hub; 16: Control box; 17, 18: Right wheel linkage; 22, 23: Left wheel linkage; 1-1, 8-1: Pulley; 2A: Inclined surface I; 2B: Brake groove bottom surface; 2C: Locking groove vertical surface; 2D: Locking groove barb surface; 2E: Inclined surface II; 2F: Release Brake groove bottom surface; 2-1: Right cable lug; 2-2: Left cable lug; 2-3: Pin shaft part; 3-1: Right cable threaded tube; 4-1: Left cable threaded tube; 5-1, 6-1: Right wheel cable lug; 5-2, 6-2: Right wheel support; 1-2: Brake lever; 8-2: Brake release lever; 12-1, 13-1: Left wheel cable lug; 12-2, 13-2: Left wheel support; 16-1: Control box pin hole; 17-1, 17-2, 5-3, 6-3: Right wheel pin shaft; 21-1, 21-2, 13-3, 12-3: Left wheel pin shaft; Detailed Implementation

[0028] like Figure 1-2As shown in the embodiment of this application, a parking brake system for a mobile garden machine includes: a braking mechanism, which includes a cable assembly and a braking component, the braking component being fixed to the frame of the garden machine and connected to the end of the cable assembly; and a control mechanism, which includes a sliding plate 2 and a drive assembly, the drive assembly being used to drive the sliding plate 2 to reciprocate; the control mechanism is used to control the braking mechanism, the other end of the cable assembly being connected to the sliding plate 2, the sliding plate 2 being driven to reciprocate by the drive assembly causing the cable assembly to brake or release the brake on the wheels of the garden machine. In this embodiment, both the braking mechanism and the control mechanism are component combinations formed by the movable connection of multiple components. The braking mechanism is mainly used to brake or release the wheels of the garden machinery, while the control mechanism is mainly used to control the braking mechanism, allowing the braking mechanism to brake or release the wheels of the garden machinery according to the operator's needs. The braking mechanism includes a braking component and a cable component. The braking component is installed near the wheels of the garden machinery and is connected and fixed to the cable component. The braking component can be a hub brake structure, disc brake structure, etc., using conventional technologies. In this embodiment, a hub brake structure is mainly used, which is existing technology and will not be described in detail here. The control mechanism includes a drive component and a sliding plate 2. The drive component mainly applies an external force to it to make it contact the sliding plate 2 first. Then, during the contact process between the drive component and the sliding plate 2, it applies a force to the sliding plate 2 to drive the sliding plate 2 to reciprocate. The drive component can be directly controlled by the operator or controlled by a controller through a sensor. One end of the cable component in the braking mechanism is connected and fixed to the sliding plate 2. The other end is connected and fixed to the braking assembly. The tensioning or loosening of the cable is achieved primarily through the movement of the sliding plate 2, thereby controlling the wheels of the garden machinery via the braking mechanism. The cable assembly includes a left wheel cable 4 and a right wheel cable 3. This cable assembly is similar to the cables used in the braking mechanisms of automatic vehicles and is existing technology, so it will not be described in detail here. The sliding plate 2, as the driven component, is driven by the driving assembly to reciprocate, thereby tightening or loosening the cable assembly connected to the sliding plate 2, thus achieving braking or releasing the wheels. The reciprocating movement of the sliding plate 2 is along the tensioning cable... The cable moves back and forth in the direction of the drive assembly; the direction of the cable tension refers to the direction in which the slide plate 2 moves after being driven by the drive assembly. Since the cable length is fixed, both ends have fixed lugs. When the slide plate moves under force, the cable connected to the slide plate end will also move with the slide plate 2. At this time, the braking assembly will be tightened. Similarly, when the cable is not under the traction of the slide plate, it can be reset by the reset component set in the mechanism and drive the slide plate 2 to reset. Thus, the wheel lock-up braking or release braking is achieved by the tension or release of the cable assembly by the slide plate 2.In this embodiment, the mobile garden machinery is a wood splitter. By applying the parking brake system of this application embodiment to the wood splitter, the stability and safety of the whole machine during operation are greatly improved, and the user experience is enhanced. At the same time, the parking brake system is also applicable to other mobile garden machinery with similar structures to the wood splitter and has the same beneficial effects.

[0029] In this embodiment, the slide plate 2 is provided with a braking groove and a release braking groove, and the drive assembly includes a brake lever 1-2 and a release braking lever 8-2; wherein the braking groove and the release braking groove are respectively provided on the contact side between the slide plate 2 and the drive assembly, and the brake lever 1-2 and the release braking lever 8-2 are used to provide the driving force for the tension cable assembly to the slide plate 2; the braking groove is provided with an inclined surface I2A on the side near the brake lever, and the inclined surface I2A is provided with a locking groove near the bottom of the braking groove, and the locking groove is arranged laterally along the moving direction of the slide plate 2; the release braking groove is provided with an inclined surface II2E on the side near the release braking lever, and the inclination angle of the inclined surface II2E is greater than the inclination angle of the inclined surface I2A. Figure 2 and Figure 4 As shown, the brake groove is an irregularly shaped groove. An inclined surface I2A, which mates with the brake rod 1-2, is provided on the side of the brake groove that contacts the brake rod 1-2. A locking groove is provided below the inclined surface I2A. The slide plate 2 moves by receiving the driving force of the brake rod through the inclined surface I2A in the brake groove. The locking groove is used to limit the direction of the brake rod 1-2, causing it to be locked inside the slide plate 2. The locking groove is horizontally positioned within the brake groove, and its opening direction is opposite to the direction of the tension cable. The locking groove consists of a locking groove vertical surface 2C, a locking groove barb surface 2D, and a brake groove bottom surface 2B. The release brake groove is a trapezoidal groove, similar to the brake groove, and also has a locking surface I2A on the side that contacts the release brake rod 8-2. The inclined surface Ⅱ2E is a combination of inclined surfaces, but the inclination angle of inclined surface Ⅱ2E is much greater than that of inclined surface Ⅰ2A. This is because the brake release lever is used to drive the slide plate to release the braking state of the wheels after the brake lever is locked in the locking groove of the brake groove. The inclination angle range of inclined surface Ⅰ2A is generally set to 30-50°, while the inclination angle range of inclined surface Ⅱ2E is generally set to 60-80°. The inclination angles of inclined surfaces Ⅰ2A and Ⅱ2E can generally be selected and adapted according to the design displacement of the slide plate during the design stage. Therefore, the larger the inclination angle of inclined surface Ⅱ2E, the less displacement of slide plate 2 is required to release the brake. At the same time, the lateral width of the brake release groove must meet the normal movement of the brake release lever 8-2 in the groove.

[0030] In this embodiment, the brake lever 1-2 moves along the depth direction of the brake groove and drives the slide plate 2 towards the direction of tightening the cable via the inclined surface I2A. When the brake lever 1-2 exceeds the inclined surface I2A in the depth direction of the brake groove, it enters the locking groove for locking. When the brake lever 1-2 is released, it moves towards the depth direction of the release brake groove and drives the slide plate 2 towards the direction of tightening the cable via the inclined surface II2E until the brake lever disengages from the locking groove, thus releasing the brake. When parking brake is required, when the brake lever 1-2 is driven to move along the inclined surface I2A of the brake groove and pushes the slide plate 2 towards the direction of tightening the cable, the brake lever 1-2 will reach the bottom surface 2B of the brake groove after exceeding the inclined surface I2A in the depth direction of the brake groove. Subsequently, under the action of the return spring 15 on the slide plate 2, the slide plate... Plate 2 moves in the opposite direction of the tension cable until the locking groove surface 2C contacts the brake lever. At the same time, the brake lever 1-2 is locked in the brake groove by the locking groove hook surface 2D, thus the plate 2 tensions the cable and puts the wheel in a braking state. When it is necessary to release the braking state, the release brake lever 8-2 pushes the plate 2 along the inclined surface Ⅱ2E to continue moving in the direction of tensioning the cable. After the release brake lever 8-2 reaches the bottom surface 2F of the release brake groove, the brake lever 1-2 disengages from the locking groove hook surface 2D on the plate 2. Under the action of the return spring 9 on the brake lever 1-2, the brake lever 1-2 returns to the initial position. At the same time, under the action of the return spring 10 on the release brake lever 8-2, the release brake lever 8-2 returns to the initial position, completing the release of the brake.

[0031] In this embodiment, combined with Figure 4 As shown, the control mechanism also includes a control box 16 for mounting the slide plate and drive assembly. The control box 16 is connected and fixed to the garden machinery frame. The control box 16 has through holes for mounting and limiting the drive assembly and the slide plate 2. The bottom of the control box 16 is fixed to the garden machinery frame by means of screw drilling or welding. The top surface of the control box 16 and the opening on the opposite side connected to the drive assembly are mainly for facilitating the installation of the slide plate 2 and the drive assembly. The through holes on the other side plates of the control box are respectively clearance holes for avoiding and releasing the brake lever, pin holes 16-1 for mounting the slide plate, and clearance holes for connecting the cable to the slide plate 2. The pin holes 16-1 for mounting the slide plate and the clearance holes for connecting the cable to the slide plate 2 are respectively arranged on the opposite side plates of the control box 16.

[0032] In this embodiment, the slide plate 2 is provided with a connecting part and a pin part 2-3 at both ends in the direction of tensioning the cable. The connecting part is used to fix the cable assembly to the slide plate 2, and the pin part 2-3 is used to connect the slide plate 2 to the control box 16 and to assist in guiding the slide plate 2 when it reciprocates. There are two connecting parts for the slide plate 2. The two connecting parts are the left cable lug 2-2 and the right cable lug 2-1, which are used to fix the cable. They are located at the end near the cable assembly in the direction of tensioning the cable and are connected and fixed to the left wheel cable 4 and the right wheel cable 3, respectively. The pin part 2-3 is located at the other end of the slide plate 2 in the direction of tensioning the cable. The slide plate 2 is inserted into the pin hole 16-1 on the control box 16 through the pin part 2-3, realizing the connection between the control box 16 and the slide plate 2. At the same time, the pin part 2-3 can also guide the slide plate 2 when it reciprocates, so that the slide plate 2 will not fall off the control box 16 when it moves.

[0033] In this embodiment, the drive assembly further includes a brake pedal 1 and a release brake pedal 8, which are respectively connected to the ends of the brake lever 1-2 and the release brake lever 8-2; combined with Figure 1 As shown, the drive component in this embodiment uses a combination pedal. By connecting the brake pedal 1 to the brake lever 1-2 and the release brake pedal 8 to the release brake lever 8-2, the operator can drive the brake lever 1-1 or the release brake lever 8-2 by stepping on the pedals to apply force to the slide plate 2, thereby controlling the braking or release of the wheels. The brake pedal 1 and the release brake pedal 8 need to be positioned in a location that is easy for the operator to operate.

[0034] In this embodiment, elastic elements are provided between the control box 16 and the drive assembly, and between the control box 16 and the slide plate 2. The elastic elements are used to provide elastic force for the reset of the drive assembly and the slide plate 2. In this embodiment, the elastic element is a spring, which is mainly used to provide elastic force for the reset of the slide plate 2, the brake pedal 1, and the release brake pedal 8. The reset springs 9 and 10 on the brake pedal 1 and the release brake pedal 8 are respectively set on the brake rod 1-2 and the release brake rod 8-2 between the brake pedal 1 and the release brake pedal 8 and the control box 16. The reset spring 15 of the slide plate 2 is set on the pin portion 2-3 between the control box 16 and the slide plate 2.

[0035] In this embodiment, the brake lever 1-2 and the release brake lever 8-2 have a driving part at the bottom of the end away from the brake pedal 1 and the release brake pedal 8, respectively. The driving part contacts the inclined surface I2A or the inclined surface II2E to drive the slide plate 2 to move in the direction of tightening the cable. The driving part is formed by the bottom of the brake lever 1-2 and the release brake lever 8-2 extending outward on the side facing the slide plate 2. The driving part of the brake lever is a lever 1-1, and the driving part of the release brake lever is a lever 8-1. When parking brake is required, by pressing the brake pedal 1, the lever 1-1 on the brake lever 1-2 contacts the inclined surface I2A on the slide plate 2, and a driving force is applied to drive the slide plate 2 to move. Similarly, when parking brake is required... When the brake is released, by pressing the release brake pedal 8, the lever 8-1 on the release brake lever 8-2 contacts the inclined surface Ⅱ2E on the slide plate 2, and at the same time, a driving force is applied to drive the slide plate 2 to move until the lever 1-1 leaves the locking groove on the slide plate 2; in addition, since both the brake lever 1-2 and the release brake lever 8-2 enter the control box 16 through the clearance hole on the control box 16, when the brake is released, the brake lever 1-2 and the release brake lever 8-2 are reset by the elastic force of the return spring. In order to prevent the brake lever 1-2 and the release brake lever 8-2 from being ejected from the control box 16, the drive unit is used to axially limit the brake lever 1-2 and the release brake lever 8-2 and keep them in the control box 16.

[0036] In this embodiment, the drive parts provided on the brake lever 1-2 and the release brake lever 8-2 are arc-shaped or have rounded corners on the contact side with the inclined surface I and the inclined surface II. By making the drive parts arc-shaped or having rounded corners on the contact side, the contact between the drive parts and the inclined surfaces can be changed from surface-to-surface contact to line-to-surface contact, thereby reducing the sliding friction between the drive parts and the inclined surfaces and making the resistance encountered by the drive parts on the brake lever 1-2 and the release brake lever 8-2 when driving the slide plate 2 to move smaller.

[0037] In this embodiment, the braking assembly includes brake shoes and a connecting rod. One end of the connecting rod is fixed to the frame of the garden machinery, and the brake shoes are fixed to the other end of the connecting rod. The brake shoes have braking surfaces, which contact or disengage with the wheel hub to brake or release the brakes. The brake shoes are divided into left wheel brake shoes 12 and 13, and right wheel brake shoes 5 and 6. The connecting rods are divided into left wheel connecting rods 22 and 23, and right wheel connecting rods 17 and 18. Each wheel of the garden machinery has two brake shoes and two connecting rods, respectively installed on the vehicle... On both sides of the wheel hub; pins 17-1 and 17-2 are welded to the right wheel side of the frame; connecting rods 18 and 19 each have a pin hole at both ends; right wheel brake pads 5 and 6 are welded with pins 5-3 and 6-3 respectively; pins 17-1 and 5-3 are installed in the pin hole of connecting rod 18; pins 17-2 and 6-3 are installed in the pin hole of connecting rod 19 and can move freely; pins 21-1 and 21-2 are welded to the left wheel side of the frame; connecting rods 22 and 23 each have a pin hole at both ends; left wheel brake pad 1... Pins 12-3 and 13-3 are welded to the left wheel brake shoe 13, respectively. Pins 21-1 and 13-3 are installed in the pin holes of connecting rod 22, and pins 21-2 and 12-3 are installed in the pin holes of connecting rod 23, allowing for free movement. A spring 20 is provided between the upper connecting part of connecting rod 18 and connecting rod 19 and the right support hub 7, and a spring 24 is provided between the upper connecting part of connecting rod 22 and connecting rod 23 and the left support hub 14. Springs 20 and 24 can be used to limit the rotation angle of the connection and can also allow the brake shoes to move freely when the brake is released. Reset; the upper ends of the left wheel brake shoes 12 and 13 are respectively connected and fixed to the left wheel connecting rods 22 and 23, and the lower ends are provided with connecting parts. The left cable 4 passes through the lower connecting parts of the left wheel brake shoes 12 and 13. By tightening or loosening the left cable 4, the left wheel brake shoes 12 and 13 are moved closer to or away from the left support hub 14 by lever principle. The same applies to the right wheel. The left wheel brake shoes 12 and 13 and the right wheel brake shoes 5 and 6 are provided with brake surfaces on the hub-facing side. The brake surfaces contact the wheel hub to brake the wheel. When the brake surfaces leave the wheel hub, the brake is released.

[0038] In this embodiment, as Figure 4As shown, when parking brake is required, the brake pedal 1 is pressed, and the lever 1-1 on the brake lever 1-2 pushes the slide plate 2 to the left along the inclined surface I2A. When the lever 1-1 reaches the bottom surface 2B of the brake groove, the slide plate 2 moves to the right under the action of the return spring 15 until the locking groove vertical surface 2C contacts the lever 1-1. At the same time, the lever 1-1 is locked by the locking groove hook surface 2D on the slide plate 2. The right cable lug 2-1 welded on the slide plate 2 pulls the right cable 3 to the left, so that the cable lug 5-1 and cable lug 6-1 have a mutual tightening force. This force is then transmitted to the right wheel brake pad 5 and right wheel brake pad 6 through the supports 5-2 and 6-2 welded on the right wheel brake pad 5 and right wheel brake pad 6, so that the right wheel brake pad 5 and right wheel brake pad 6 lock the right support hub 7, realizing the right wheel parking brake. Similarly, the left cable lug 2-2 welded to the skateboard 2 will pull the left cable 4 to the left, causing the cable lugs 12-1 and 13-1 to exert a mutual tightening force. This force is then transmitted to the left wheel brake shoes 12 and 13 via the supports 12-2 and 13-2 welded to them, thereby locking the left wheel brake shoes 12 and 13 onto the left support hub 14, achieving left wheel parking brake. The right cable helix 3-1 is used to adjust the effective length of the right cable 3, and the left cable helix 4-1 is used to adjust the effective length of the left cable 4.

[0039] When the parking brake needs to be released, the release brake pedal 8 is pressed. The lever 8-1 on the release brake lever 8-2 will push the slide plate 2 to the left along the inclined surface Ⅱ2E. When the lever 8-1 reaches the bottom surface 2F of the release brake groove, the lever 1-1 will disengage from the locking groove hook surface 2D on the slide plate 2. Under the action of the return spring 9, the brake pedal 1 returns to the initial position. At the same time, under the action of the return spring 10, the release brake pedal 8 returns to the initial position, completing the release of the brake. The slide plate 2 also returns to the initial position under the action of the return spring 15.

[0040] Simultaneously, when skateboard 2 resets, right cable 3 resets, releasing the interaction force between cable lugs 5-1 and 6-1. This causes right wheel brake shoes 5 and 6 to no longer lock onto the right support hub 7, and under the action of return spring 20, right wheel brake shoes 5 and 6 reset. Similarly, when skateboard 2 resets, left cable 4 resets, releasing the interaction force between cable lugs 12-1 and 13-1. This causes left wheel brake shoes 12 and 13 to no longer lock onto the left support hub 14, and under the action of return spring 24, left wheel brake shoes 12 and 13 reset.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A parking brake system for mobile garden machinery, characterized in that: include: A braking mechanism, comprising a cable assembly and a braking assembly, wherein the braking assembly is fixed to the frame of the garden machinery and connected to the end of the cable assembly; A control mechanism, comprising a slide plate and a drive assembly, the drive assembly being used to drive the slide plate to reciprocate; The control mechanism is used to control the braking mechanism. The other end of the cable assembly is connected to the slide plate. When the slide plate is driven to reciprocate by the drive assembly, it drives the cable assembly to brake or release the brake on the wheels of the garden machinery. The slide plate is provided with a braking groove and a braking release groove, and the drive assembly includes a braking lever and a braking release lever; The brake groove has an inclined surface I on the side near the brake lever, and the inclined surface I has a locking groove near the bottom of the brake groove. The locking groove is arranged laterally along the moving direction of the slide plate. The release brake groove has an inclined surface II on the side near the release brake lever, and the inclination angle of the inclined surface II is greater than that of the inclined surface I. The brake lever moves along the depth direction of the brake groove and drives the slide plate to move towards the tension cable via the inclined surface I. When the brake lever exceeds the inclined surface I in the depth direction of the brake groove, it enters the locking groove for locking. The release brake lever moves towards the depth direction of the release brake groove and drives the slide plate to continue moving towards the tension cable via the inclined surface II until the brake lever disengages from the locking groove to release the brake.

2. The parking brake system for mobile garden machinery according to claim 1, characterized in that: The control mechanism also includes a control box for mounting the skateboard and drive assembly. The control box is connected and fixed to the garden machinery frame, and the control box has through holes for mounting and limiting the drive assembly and skateboard.

3. The parking brake system for mobile garden machinery according to claim 2, characterized in that: The slide plate is provided with a connecting part and a pin part at both ends in the direction of tensioning the cable. The connecting part is used to fix the cable assembly on the slide plate, and the pin part is used to connect the slide plate to the control box and to assist in guiding the slide plate when it reciprocates.

4. The parking brake system for mobile garden machinery according to claim 2, characterized in that: Elastic elements are provided between the control box and the drive assembly, and between the control box and the slide plate. These elastic elements provide elastic force for resetting the drive assembly and the slide plate.

5. The parking brake system for mobile garden machinery according to claim 1, characterized in that: The drive assembly also includes a brake pedal and a release brake pedal, which are respectively connected to the ends of the brake lever and the release brake lever.

6. The parking brake system for mobile garden machinery according to claim 5, characterized in that: The brake lever and the release lever have a drive unit at the bottom of the end away from the brake pedal and the release pedal, respectively. The drive unit drives the slide plate to move in the direction of tensioning the cable by contacting inclined surface I or inclined surface II.

7. The parking brake system for mobile garden machinery according to claim 6, characterized in that: The drive unit is arc-shaped or has rounded corners on the contact side with inclined surface I and inclined surface II.

8. The parking brake system for mobile garden machinery according to claim 1, characterized in that: The braking assembly includes brake pads and a connecting rod. One end of the connecting rod is fixed to the frame of the garden machinery, and the brake pads are fixed to the other end of the connecting rod. The brake pads are provided with a braking surface. The brake pads brake or release the wheel by contacting or disengaging from the wheel hub through the braking surface.

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