Trolley wheel braking device

Abstract

The utility model relates to the technical field of wheel braking devices, in particular to a cart wheel braking device which comprises a mounting frame, a wheel is rotatably connected to the bottom end of the inner side of the mounting frame, a rotating groove is formed in the position, above the wheel, in the mounting frame, and a rotating rod is rotatably connected to the end, located on the inner wall of the rotating groove, in the mounting frame. The other end of the inner side of the rotating groove is rotationally connected with a movable cylinder, one end of the rotating rod is fixedly connected with one end of the movable cylinder, a torsional spring is installed between the rotating rod and the inner wall of the rotating groove, a brake plate is clamped to the movable cylinder through an installation mechanism, and a pedal is installed at one end of the brake plate. The mounting mechanism comprises a butt joint assembly, a rotary pressing assembly and an abutting assembly, and the butt joint assembly is used for enabling the brake plate to be in butt joint with the movable cylinder; the device is simple in structure and convenient to operate, disassembly, assembly and replacement can be rapidly completed through downward pressing and rotating, the working efficiency is improved, and the subsequent braking effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel brake devices, in particular to a wheel brake device for a cart. Background Art

[0002] In modern society, people need to use carts for transportation. Carts are transport vehicles that are pushed and pulled by manpower. The body material of traditional carts is generally wood, and the body material of currently produced carts is generally iron sheets. Existing carts usually have wheels installed at the corners of their bottoms, and the front wheel bracket is set as a universal structure to achieve flexible steering of the cart. When the cart needs to slow down, especially when slowing down on a slope, it is necessary to brake the wheels of the cart to prevent the cart from moving independently, thereby avoiding the occurrence of dangerous conditions. The current braking method is mostly to set a brake plate on one side of the wheel. When braking and deceleration are required, the pedal on the brake plate is stepped on to make it move downward and stuck. At this time, the brake plate rubs against the wheel body, thereby achieving a deceleration effect. However, the existing brake plates are mostly locked or disassembled by rotating each set of bolts and nuts in circles. The process of replacing worn and aged brake plates is relatively cumbersome, which affects the efficiency of disassembly and replacement. Utility Model Content

[0003] The purpose of the utility model is to provide a wheel brake device for a cart to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A wheel brake device for a cart comprises a mounting frame, an inner bottom end of the mounting frame is rotatably connected to a wheel, a rotating groove is opened inside the mounting frame above the wheel, a rotating rod is rotatably connected to one end of the inner wall of the rotating groove inside the mounting frame, and a movable cylinder is rotatably connected to the other end of the inner wall of the rotating groove, one end of the rotating rod is fixedly connected to one end of the movable cylinder, a torsion spring is installed between the rotating rod and the inner wall of the rotating groove, a brake plate is clamped on the movable cylinder through a mounting mechanism, and a pedal is installed at one end of the brake plate, and the mounting mechanism comprises a docking assembly, a rotating pressing assembly and an abutting assembly, the docking assembly is used to dock the brake plate on the movable cylinder, the rotating pressing assembly is used to cooperate with the docking assembly to unlock the position of the brake plate, and the abutting assembly is used to cooperate with the rotating pressing assembly to lock the position of the brake plate.

[0006] As a preferred scheme of the utility model, the docking assembly includes a movable rod slidably connected to the inside of the movable cylinder, a rotating groove is opened inside the movable cylinder on the outside of the movable rod, a rotating disk is slidably connected to the inner side of the rotating groove, the rotating disk is rotatably connected to the movable rod, a first spring is installed between the two ends of one side of the rotating disk and the inner wall of the rotating groove, a slot is opened on one side of the inside of the movable cylinder, a plug plate slidably connected to the slot is installed on the other end of the brake plate, a docking groove is opened on one side of the slot inside the movable cylinder, a retraction groove is opened on the other side of the slot inside the movable cylinder, a clamping block is installed at one end of the movable rod, the docking groove is a circular groove, the docking groove and the clamping block are slidably connected, the longitudinal width of the clamping block is the same as that of the movable rod, and a connecting groove is opened inside the plug plate to engage with the longitudinal block.

[0007] As a preferred solution of the utility model, the rotating compression assembly includes a mounting groove opened inside the movable cylinder and located on one side of the docking groove, the mounting groove is a circular groove, the inner side of the mounting groove is rotatably connected with a chassis, second springs are installed at both ends of the top of the chassis, a docking plate is installed at the top of the second spring, a positioning block is installed on the top of the docking plate, a positioning groove is opened at the bottom end of the blocking block and is engaged with the positioning block, and the docking plate is slidably connected to the inner side of the mounting groove.

[0008] As a preferred solution of the utility model, the abutment assembly includes abutment grooves opened at both ends of the inner wall of the installation groove, a third spring is installed on the inner side of the abutment groove, an abutment block is installed on one end of the third spring, the abutment block and the abutment groove are snap-fitted and connected, the side cross-section of the block is U-shaped, and the bottom ends of the opposite surfaces of the two groups of abutment blocks are provided with snap-fitting grooves that are snap-fitted with the protruding ends on both sides of the block.

[0009] As a preferred solution of the utility model, both ends of the clamping block are provided with a first slope surface, and the ends of the two groups of abutting blocks close to the clamping block are provided with a second slope surface, and the first slope surface and the second slope surface are in contact with each other.

[0010] As a preferred solution of the utility model, the movable rod extends to one end of the outer side of the movable cylinder and is rotatably connected to a pull ring, one side of the installation frame is located on both sides of the movable cylinder and has sliding grooves, the inner side of the sliding groove is slidably connected to a sliding block, one end of the sliding block is installed with a movable cover, and one side of the installation frame is located on the other side of the movable cylinder and has a connecting plate installed.

[0011] As a preferred solution of the utility model, a first adsorption component is embedded and installed at one end of the movable cover, and a second adsorption component corresponding to the first adsorption component is embedded and installed at one side of the connecting plate. The first adsorption component and the second adsorption component are both magnetic components, and have opposite magnetic properties and attract each other. A drag groove is opened at one end of the movable cover.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the brake plate is docked on the movable cylinder through the docking assembly, the rotating pressing assembly cooperates with the docking assembly to unlock the position of the brake plate, and the abutting assembly cooperates with the rotating pressing assembly to lock the position of the brake plate. The structure is simple and the operation is convenient. Disassembly and assembly can be quickly completed by pressing down and rotating, which improves work efficiency and ensures the subsequent braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the installation mechanism and the plug board of the utility model;

[0016] Figure 3 For this utility model Figure 1 Schematic diagram of the enlarged structure of part A.

[0017] In the figure: 1. mounting frame; 2. wheel; 3. movable cylinder; 4. brake plate; 5. pedal; 6. rotating disk; 7. docking groove; 8. clamping block; 9. chassis; 10. docking disk; 11. positioning block; 12. abutment groove; 13. abutment block; 14. plug plate; 15. first slope; 16. sliding block; 17. movable cover; 18. first adsorption member. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] Example:

[0020] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0021] A wheel brake device for a cart comprises a mounting frame 1, wherein the inner bottom end of the mounting frame 1 is rotatably connected to a wheel 2, a rotating groove is provided inside the mounting frame 1 above the wheel 2, a rotating rod is rotatably connected to one end of the inner wall of the rotating groove inside the mounting frame 1, a movable cylinder 3 is rotatably connected to the other end of the inner side of the rotating groove, one end of the rotating rod is fixedly connected to one end of the movable cylinder 3, a torsion spring is installed between the rotating rod and the inner wall of the rotating groove, a brake plate 4 is clamped on the movable cylinder 3 through a mounting mechanism, a pedal 5 is installed at one end of the brake plate 4, and the mounting mechanism comprises a docking assembly, a rotating pressing assembly and an abutting assembly. The docking assembly is used to dock the brake plate 4 on the movable cylinder 3, the rotating and pressing assembly is used to cooperate with the docking assembly to unlock the position of the brake plate 4, and the abutting assembly is used to cooperate with the rotating and pressing assembly to lock the position of the brake plate 4. When in use, the device can dock the brake plate 4 on the movable cylinder 3 through the docking assembly, and the rotating and pressing assembly cooperates with the docking assembly to unlock the position of the brake plate 4. The abutting assembly cooperates with the rotating and pressing assembly to lock the position of the brake plate 4. It has a simple structure and is easy to operate. Disassembly and assembly can be quickly completed by pressing down and rotating, which improves work efficiency and ensures subsequent braking effect.

[0022] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the docking assembly includes a movable rod slidably connected to the inside of the movable cylinder 3, a rotating groove is provided inside the movable cylinder 3 on the outside of the movable rod, a rotating disk 6 is slidably connected to the inside of the rotating groove, the rotating disk 6 is rotatably connected to the movable rod, a first spring is installed between the two ends of one side of the rotating disk 6 and the inner wall of the rotating groove, a slot is provided on one side of the inside of the movable cylinder 3, a plug plate 14 slidably connected to the slot is installed on the other end of the brake plate 4, a docking groove 7 is provided on one side of the slot inside the movable cylinder 3, and a docking groove 7 is provided on the other side of the slot inside the movable cylinder 3 A retraction groove is provided, and a card block 8 is installed at one end of the movable rod. The docking groove 7 is a circular groove. The docking groove 7 and the card block 8 are slidably connected. The width of the card block 8 in the longitudinal direction is the same as that of the movable rod. A connecting groove that engages with the card block 8 in the longitudinal direction is opened inside the plug plate 14. First, insert the plug plate 14 into the inner side of the slot, then buckle the pull ring, twist the movable rod to rotate the card block 8 to the longitudinal direction, and then press the pull ring to drive the card block 8 to pass through the connecting groove and rotate to the horizontal direction inside the docking groove 7, and then continue to press down the card block 8 to enter the inner side of the installation groove to achieve the effect of docking and fitting.

[0023] In this embodiment, if Figure 1 , Figure 2 and Figure 3As shown, the abutment assembly includes an abutment groove 12 opened at both ends of the inner wall of the installation groove, a third spring is installed inside the abutment groove 12, one end of the third spring is installed with an abutment block 13, the abutment block 13 is connected with the abutment groove 12 by snapping, the side section of the block 8 is U-shaped, the bottom ends of the opposite surfaces of the two groups of abutment blocks 13 are provided with a snapping groove that is snapped with the protruding ends on both sides of the block 8, both ends of the block 8 are provided with a first slope 15, and the ends of the two groups of abutment blocks 13 close to the block 8 are provided with a second slope, the first slope 15 and the second slope fit each other, and then, the pull ring is buckled to continue to squeeze downward The rod drives the rotating disk 6 to stretch the first spring, and the two ends of the block 8 contact the abutment blocks 13 on both sides. The first slope 15 and the second slope contact and squeeze each other, and the abutment block 13 is compressed to drive the third spring to retract. After the block 8 continues to move downward and staggers the abutment block 13, the abutment block 13 is rebounded and reset by the third spring. At this time, the positioning block 11 is inserted into the positioning groove, and the docking disk 10 compresses the second spring to retract, and then pulls back a distance. The protruding ends on both sides of the block 8 are also inserted into the inner side of the fixed groove, and the abutment block 13 and the docking disk 10 press the block 8 tightly to lock the position of the brake plate 4.

[0024] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the rotating pressing assembly includes an installation groove opened in the movable cylinder 3 and located on one side of the docking groove 7. The installation groove is a circular groove, and a chassis 9 is rotatably connected to the inner side of the installation groove. Second springs are installed at both ends of the top of the chassis 9, and a docking plate 10 is installed on the top of the second spring. A positioning block 11 is installed on the top of the docking plate 10, and a positioning groove is opened at the bottom of the clamping block 8 to engage with the positioning block 11. The docking plate 10 is slidably connected to the inner side of the installation groove. Further, pressing the movable rod drives the clamping block 8, the docking plate 10 and the first spring to move down a distance, so that the clamping block 8 is away from the inner side of the fixed groove, and then cooperates with the chassis 9 to rotate, stagger the abutment block 13 and then pull and move. After the clamping block 8 moves to the inner side of the docking groove 7, it is rotated to the longitudinal direction and pulled back with the connecting groove port. The clamping block 8 enters the inner side of the retraction groove, and it and the movable rod no longer block the movement of the plug plate 14. At this time, the severely worn brake plate 4 can be removed and replaced to ensure the subsequent braking effect.

[0025] In this embodiment, if Figure 1 , Figure 2 and Figure 3As shown, the movable rod extends to one end of the outer side of the movable cylinder 3 and is rotatably connected to a pull ring, one side of the mounting frame 1 is located on both sides of the movable cylinder 3 and is provided with sliding grooves, the inner side of the sliding groove is slidably connected with a sliding block 16, one end of the sliding block 16 is installed with a movable cover 17, one side of the mounting frame 1 is located on the other side of the movable cylinder 3 and is provided with a connecting plate, one end of the movable cover 17 is embedded with a first adsorption component 18, and one side of the connecting plate is embedded with a second adsorption component corresponding to the first adsorption component 18, the first adsorption component 18 and the second adsorption component are both magnetic components, and the magnetism is opposite and attracts each other, and one end of the movable cover 17 is provided with a drag groove, further, the drag groove is buckled to cooperate with the sliding groove and the sliding block 16 to drive the movable cover 17 to slide on one side of the mounting frame 1 until it moves to fit with one side of the connecting plate, and the first adsorption component 18 and the second adsorption component fit and adsorb to cover the pull ring to avoid accidental touch.

[0026] The implementation principle of a wheel brake device of a cart in the embodiment of the present application is as follows: insert the plug plate 14 into the inner side of the slot, then buckle the pull ring, twist the movable rod to make the clamping block 8 rotate to the longitudinal direction, press the pull ring to drive the clamping block 8 to pass through the connecting groove and rotate to the horizontal direction inside the docking groove 7, and then continue to press the clamping block 8 to enter the inner side of the installation groove to achieve the docking and fitting effect, buckle the pull ring and continue to squeeze the movable rod downward, drive the rotating disk 6 to stretch the first spring, and the two ends of the clamping block 8 contact the abutting blocks 13 on both sides, the first slope 15 and the second slope contact and squeeze each other, the abutting block 13 is compressed and drives the third spring to retract, and after the clamping block 8 continues to move downward and stagger the abutting block 13, the abutting block 13 is rebounded and reset by the third spring. At this time, the positioning block 11 is stuck in the positioning groove, the docking disk 10 compresses the second spring to retract, and then pulls back a distance, and the protruding ends on both sides of the clamping block 8 The clamping block 8 is then moved to the inner side of the docking groove 7 and then rotated to the longitudinal direction and pulled back with the connecting groove port. The clamping block 8 enters the inner side of the retraction groove and it and the movable rod no longer block the movement of the plug plate 14. At this time, the brake plate 4 that is severely worn can be removed and replaced to ensure the subsequent braking effect. The dragging groove is buckled to cooperate with the sliding groove and the sliding block 16 to drive the movable cover 17 to slide on one side of the mounting frame 1 until it moves to fit with one side of the connecting plate. The first adsorption member 18 and the second adsorption member are fitted and adsorbed to cover the pull ring to avoid accidental touch.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheel brake device for a cart, comprising a mounting frame (1), characterized in that: The inner bottom end of the mounting frame (1) is rotatably connected to a wheel (2); a rotating groove is provided inside the mounting frame (1) above the wheel (2); a rotating rod is rotatably connected to one end of the inner wall of the rotating groove inside the mounting frame (1); a movable cylinder (3) is rotatably connected to the other end of the inner side of the rotating groove; one end of the rotating rod is fixedly connected to one end of the movable cylinder (3); a torsion spring is installed between the rotating rod and the inner wall of the rotating groove; a brake plate (4) is clamped on the movable cylinder (3) through a mounting mechanism; a pedal (5) is installed at one end of the brake plate (4); the mounting mechanism comprises a docking assembly, a rotating pressing assembly and an abutting assembly; the docking assembly is used to dock the brake plate (4) on the movable cylinder (3); the rotating pressing assembly is used to cooperate with the docking assembly to unlock the position of the brake plate (4); and the abutting assembly is used to cooperate with the rotating pressing assembly to lock the position of the brake plate (4).

2. A wheel brake device for a cart according to claim 1, characterized in that: The docking assembly comprises a movable rod slidably connected to the inside of the movable cylinder (3); a rotating groove is provided inside the movable cylinder (3) at the outer side of the movable rod; a rotating disk (6) is slidably connected to the inside of the rotating groove; the rotating disk (6) is rotatably connected to the movable rod; a first spring is installed between the two ends of one side of the rotating disk (6) and the inner wall of the rotating groove; a slot is provided on one side of the inside of the movable cylinder (3); a plug plate (14) slidably connected to the slot is installed on the other end of the brake plate (4); a docking groove (7) is provided inside the movable cylinder (3) at one side of the slot; a retraction groove is provided inside the movable cylinder (3) at the other side of the slot; a clamping block (8) is installed at one end of the movable rod; the docking groove (7) is a circular groove; the docking groove (7) is slidably connected to the clamping block (8); the width of the clamping block (8) in the longitudinal direction is the same as that of the movable rod; a connecting groove is provided inside the plug plate (14) to engage with the clamping block (8) in the longitudinal direction.

3. A wheel brake device for a cart according to claim 2, characterized in that: The rotating compression assembly comprises a mounting groove which is arranged inside the movable cylinder (3) and is located on one side of the docking groove (7); the mounting groove is a circular groove; a chassis (9) is rotatably connected to the inside of the mounting groove; second springs are installed at both ends of the top of the chassis (9); a docking plate (10) is installed at the top of the second spring; a positioning block (11) is installed at the top of the docking plate (10); a positioning groove which is engaged with the positioning block (11) is arranged at the bottom end of the clamping block (8); and the docking plate (10) is slidably connected to the inside of the mounting groove.

4. A wheel brake device for a cart according to claim 3, characterized in that: The abutment assembly comprises an abutment groove (12) provided at both ends of the inner wall of the installation groove, a third spring is installed inside the abutment groove (12), an abutment block (13) is installed at one end of the third spring, the abutment block (13) is connected to the abutment groove (12) by snapping, the side section of the snap block (8) is U-shaped, and the bottom ends of the opposite surfaces of the two groups of the abutment blocks (13) are provided with snap grooves snapped with the protruding ends on both sides of the snap block (8).

5. A wheel brake device for a cart according to claim 4, characterized in that: Both ends of the clamping block (8) are provided with a first slope surface (15), and both ends of the two groups of abutment blocks (13) close to the clamping block (8) are provided with a second slope surface, and the first slope surface (15) and the second slope surface are in contact with each other.

6. A wheel brake device for a cart according to claim 5, characterized in that: One end of the movable rod extending to the outside of the movable cylinder (3) is rotatably connected to a pull ring, one side of the installation frame (1) is located on both sides of the movable cylinder (3) and is provided with sliding grooves, the inner side of the sliding groove is slidably connected to a sliding block (16), one end of the sliding block (16) is installed with a movable cover (17), and one side of the installation frame (1) is located on the other side of the movable cylinder (3) and is installed with a connecting plate.

7. A wheel brake device for a cart according to claim 6, characterized in that: A first adsorption member (18) is embedded and installed at one end of the movable cover (17), and a second adsorption member corresponding to the first adsorption member (18) is embedded and installed at one side of the connecting plate. The first adsorption member (18) and the second adsorption member are both magnetic members with opposite magnetic properties and attract each other. A dragging groove is provided at one end of the movable cover (17).

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