Double-brake braking trundle with stacked brake device

Abstract

The invention discloses a double-brake braking trundle with a stack brake device, and relates to the field of trundle, the device comprises a mounting seat and a support rotatably arranged at the bottom of the mounting seat, a roller is rotatably arranged in the support, a stack brake mechanism for locking the roller is mounted on the support, and the stack brake mechanism comprises a brake spring piece, an unlocking pedal and a brake pedal. When the device is used, the brake pedal is stepped down, so that the arc-shaped salient point structure is in contact with the surface of the roller, meanwhile, the tooth piece is tilted upwards so as to be meshed with the brake crankset, and meanwhile, the brake pedal and the unlocking pedal form a dead point for clamping connection, so that the roller cannot rotate, meanwhile, the bracket cannot rotate horizontally, and the locking effect is more stable; the dead point is removed by treading down the unlocking pedal, and at the moment, the bracket and the roller are in a free rotation state and do not need to be lifted up, so that the operation is more convenient.

Description

TECHNICAL FIELD

[0001] The application relates to the field of casters, in particular to a double-brake caster with a superimposed brake device. BACKGROUND

[0002] The conventional industrial caster has a simple brake structure, and generally adopts a single pedal, and an operator steps on the pedal to realize caster braking under the action of a spring piece; when the caster is unlocked, the pedal is lifted up with the toes to reset the pedal.

[0003] However, the operation is relatively inconvenient in actual use, and when the caster is locked, the rolling wheel is often only stopped from rotating, but the rolling wheel seat and the bottom of the equipment are still horizontally twisted, which affects the stability during locking. SUMMARY

[0004] The application aims to provide a double-brake caster with a superimposed brake device to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a double-brake caster with a superimposed brake device, comprising a mounting seat and a support rotatably arranged at the bottom of the mounting seat, a rolling wheel rotatably arranged in the support, and a superimposed brake mechanism arranged on the support and used for locking the rolling wheel, wherein the superimposed brake mechanism comprises a brake spring piece rotatably arranged in the support and an unlocking pedal rotatably arranged at the top of the support, a brake pedal rotatably arranged on the brake spring piece, and the top end of the brake pedal movably hinged to the unlocking pedal.

[0006] The brake pedal is flipped down to make the outer end of the brake spring piece closely contact the rolling wheel, the inner end of the brake spring piece movably clamped to the bottom end of the mounting seat, and the top end of the brake pedal movably clamped to the unlocking pedal, thereby realizing braking.

[0007] The unlocking pedal is flipped down to release the locking state of the brake pedal, so that the brake spring piece is reset to realize unlocking.

[0008] Preferably, the front end of the brake spring piece is provided with a tooth piece, the middle part of the brake spring piece is provided with a rebound tongue piece, and the tail part of the brake spring piece is provided with an arc-shaped convex point structure used for locking the rolling wheel by closely contacting the surface of the rolling wheel.

[0009] Preferably, a third blind rivet is arranged on the support, the middle part of the brake spring piece is integrally formed with a hinge part by cutting and bending, and the hinge part is rotatably connected to the outer surface of the third blind rivet.

[0010] Preferably, the rebounding tongue abuts against the inner top of the support for resetting when the brake spring piece is unlocked.

[0011] Preferably, a brake disc is coaxially arranged at the bottom of the mounting seat, and the tooth piece is engaged with the brake disc.

[0012] Preferably, a large disc is arranged at the bottom of the mounting seat, upper rolling balls are arranged between the large disc and the support, lower rolling balls are arranged between the brake disc and the support, and a center rivet penetrating the large disc and the support is arranged between the mounting seat and the brake disc.

[0013] Preferably, a flat washer is arranged between the bottom end of the center rivet and the brake disc.

[0014] Preferably, a threaded bolt is arranged between the support and the roller, and a self-locking nut is threadedly connected to the outer end of the threaded bolt.

[0015] Preferably, a second bird's eye rivet is arranged between the unlocking pedal and the support, a knurled pin is arranged between the brake pedal and the unlocking pedal, and a first bird's eye rivet is arranged between the brake pedal and the brake spring piece.

[0016] Preferably, the inner end of the brake pedal is formed into a wedge-shaped locking portion by turning, a clamping portion is formed on the unlocking pedal by turning, and the wedge-shaped locking portion and the clamping portion are interlocked to form a dead point.

[0017] Technical effects and advantages of the present application:

[0018] By designing the stack brake mechanism, when in use, the arc-shaped convex point structure is in contact with the roller surface by stepping on the brake pedal, the tooth piece is raised upward to engage with the brake disc, the brake pedal and the unlocking pedal form a dead point to be clamped, the roller cannot rotate, the support cannot rotate horizontally, the locking effect is more stable, the dead point is released by stepping on the unlocking pedal, at this time, the support and the roller are in a free rotating state, without lifting, the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall outer surface structure of the present application.

[0020] Figure 2 It is a sectional view of the overall side structure of the present application.

[0021] Figure 3 It is an overall structure explosion diagram of the present application.

[0022] Figure 4 It is a separation explosion diagram of the stack brake mechanism and the movable support of the present application.

[0023] Figure 5 Fig. 2 is a schematic view of the locking state of the stack brake mechanism of the present application;

[0024] Figure 6 Fig. 3 is a schematic view of the cross-sectional structure of the locking state of the stack brake mechanism of the present application;

[0025] Figure 7 Fig. 4 is a schematic view of the cross-sectional structure of the unlocking state of the stack brake mechanism of the present application;

[0026] Figure 8 Fig. 5 is a schematic view of the outer surface structure of the brake spring piece of the present application.

[0027] In the figure: 1, mounting seat; 2, bracket; 3, large disc; 4, brake disc; 5, upper ball; 6, lower ball; 7, center rivet; 8, brake spring piece; 82, tooth piece; 83, arc-shaped convex point structure; 84, hinged part; 85, rebounding tongue; 9, unlocking pedal; 10, brake pedal; 11, knurled pin; 12, first bird's eye rivet; 13, second bird's eye rivet; 14, third bird's eye rivet; 15, flat washer; 16, roller; 17, stringed bolt; 18, self-locking nut; 19, dead point. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] The present application provides a double-brake brake trolley with a stack brake device, as shown in Figures 1 to 8 Fig. 1, which comprises a mounting seat 1 and a bracket 2 rotatably arranged at the bottom of the mounting seat 1, a roller 16 rotatably arranged in the bracket 2, and a stack brake mechanism for locking the roller 16 mounted on the bracket 2, the stack brake mechanism comprising a brake spring piece 8 rotatably arranged in the bracket 2 and an unlocking pedal 9 rotatably arranged at the top of the bracket 2, a brake pedal 10 rotatably arranged on the brake spring piece 8, and the top end of the brake pedal 10 movably hinged to the unlocking pedal 9.

[0030] When the brake pedal 10 is turned down, the outer end of the brake spring piece 8 is tightly attached to the roller 16, and the inner end of the brake spring piece 8 is movably clamped to the bottom end of the mounting seat 1, and the top end of the brake pedal 10 is movably clamped to the unlocking pedal 9, so as to realize braking.

[0031] When the unlocking pedal 9 is turned down, the locking state with the brake pedal 10 is released, so as to reset the brake spring piece 8 and realize unlocking.

[0032] The front end of the brake spring piece 8 is provided with a tooth piece 82, the middle part of the brake spring piece 8 is provided with a rebound tongue piece 85, and the tail part of the brake spring piece 8 is provided with an arc-shaped convex point structure 83 for locking the roller 16 by fitting the surface of the roller 16.

[0033] The bracket 2 is provided with a third phoenix rivet 14, and the middle part of the brake spring piece 8 is integrally formed with a hinge part 84 by cutting and bending, which is rotationally connected to the outer surface of the third phoenix rivet 14.

[0034] The rebound tongue piece 85 abuts against the inner top part of the bracket 2, and is used for resetting when the brake spring piece 8 is unlocked.

[0035] The bottom of the mounting seat 1 is coaxially provided with a brake disc 4, and the tooth piece 82 is engaged with the brake disc 4.

[0036] The bottom of the mounting seat 1 is provided with a large disc 3, the upper ball 5 is installed between the large disc 3 and the bracket 2, the lower ball 6 is installed between the brake disc 4 and the bracket 2, and the center rivet 7 is installed between the mounting seat 1 and the brake disc 4 and penetrates the large disc 3 and the bracket 2.

[0037] The bottom end of the center rivet 7 is provided with a flat washer 15 between the brake disc 4.

[0038] The bracket 2 and the roller 16 are provided with a string wire screw 17, and the outer end of the string wire screw 17 is threadedly connected with a self-locking nut 18.

[0039] The second phoenix rivet 13 is installed between the unlocking pedal 9 and the bracket 2, the knurled pin 11 is installed between the brake pedal 10 and the unlocking pedal 9, and the first phoenix rivet 12 is installed between the brake pedal 10 and the brake spring piece 8.

[0040] The inner end of the brake pedal 10 is formed with a wedge-shaped locking part by turning, the unlocking pedal 9 is formed with a clamping part by turning, and the wedge-shaped locking part and the clamping part are interlocked to form a dead point 19.

[0041] Working principle; as Figure 5 and Figure 6The diagram shows the braking effect of this device. When the brake pedal 10 is pressed down, it pushes the brake spring 8 to flip downwards. At the same time, the top of the brake pedal 10 pulls the unlocking pedal 9 to rotate counterclockwise. Under the combined effect, the arc-shaped protrusion structure 83 of the brake spring 8 contacts the surface of the roller 16, locking the roller 16. At the same time, the toothed plate 82 at the inner end of the brake spring 8 tilts upwards, thus engaging with the brake disc 4. Meanwhile, the rebound tongue 85 abuts against the bottom of the bracket 2. At this time, the wedge-shaped locking part and the snap-fit ​​part of the unlocking pedal 9 and the brake pedal 10 interlock to form a dead point 19. The brake spring 8 is pressed tight and will not rebound. The surface of the unlocking pedal 9 is in a horizontal position. At this time, the caster is in a double-brake state, the roller 16 cannot rotate, and the bracket 2 cannot rotate horizontally, making the locking effect more stable.

[0042] like Figure 7 The diagram shown is a schematic of the unlocking of this device. When the operator steps on the unlocking foot pedal 9, the locking part moves away from the dead point 19. Under the rebound force of the rebound tongue 85, the brake foot pedal 10 returns to its original position, the brake spring plate 8 rotates counterclockwise along the third eyelet rivet 14, the arc-shaped protrusion structure 83 moves away from the roller 16, and the front tooth plate 82 disengages from the teeth of the brake disc 4. At this time, both the bracket 2 and the roller 16 are in a free rotation state.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-brake caster with a stacked brake device, characterized in that, The device includes a mounting base (1) and a bracket (2) rotatably disposed at the bottom of the mounting base (1). A roller (16) is rotatably disposed in the bracket (2). A locking mechanism for locking the roller (16) is mounted on the bracket (2). The locking mechanism includes a brake spring plate (8) rotatably disposed inside the bracket (2) and an unlocking foot pedal (9) rotatably disposed at the top of the bracket (2). A brake foot pedal (10) is rotatably disposed on the brake spring plate (8). The top of the brake foot pedal (10) is movably hinged to the unlocking foot pedal (9). The brake pedal (10) flips downward so that the outer end of the brake spring plate (8) is in close contact with the roller (16), while the inner end of the brake spring plate (8) is movably engaged with the bottom end of the mounting base (1), and the top end of the brake pedal (10) is movably engaged with the unlock pedal (9) to achieve braking. The unlocking foot pedal (9) flips downward to release the locking state with the brake foot pedal (10), so that the brake spring plate (8) is reset and unlocked.

2. A double-brake caster with a stacked brake device according to claim 1, characterized in that, The brake spring plate (8) has a toothed plate (82) at its front end, a rebound tongue plate (85) at its middle part, and an arc-shaped protrusion structure (83) at its rear end. The arc-shaped protrusion structure (83) is used to fit against the surface of the roller (16) to lock the roller (16).

3. A double-brake caster with a stacked brake device according to claim 2, characterized in that, The bracket (2) is equipped with a third eyelet rivet (14), and the brake spring plate (8) is integrally formed by cutting and bending in the middle to form a hinge part (84), which is rotatably connected to the outer surface of the third eyelet rivet (14).

4. A double-brake caster with a stacked brake device according to claim 3, characterized in that, The rebound tongue (85) abuts against the inner top of the bracket (2) and is used to reset the brake spring (8) when it is unlocked.

5. A double-brake caster with a stacked brake device according to claim 3, characterized in that, The bottom of the mounting base (1) is coaxially mounted with a brake disc (4), and the toothed plate (82) meshes with the brake disc (4).

6. A double-brake caster with a stacked brake device according to claim 5, characterized in that, The mounting base (1) has a large disc (3) at its bottom. An upper ball bearing (5) is installed between the large disc (3) and the bracket (2). A lower ball bearing (6) is installed between the brake disc (4) and the bracket (2). A central rivet (7) that passes through the large disc (3) and the bracket (2) is installed between the mounting base (1) and the brake disc (4).

7. A double-brake caster with a stacked brake device according to claim 6, characterized in that, A flat washer (15) is installed between the bottom end of the center rivet (7) and the brake disc (4).

8. A double-brake caster with a stacked brake device according to claim 1, characterized in that, A threaded bolt (17) is installed between the bracket (2) and the roller (16), and a self-locking nut (18) is threaded to the outer end of the threaded bolt (17).

9. A double-brake caster with a stacked brake device according to claim 1, characterized in that, A second eyelet rivet (13) is installed between the unlocking foot pedal (9) and the bracket (2), a knurled pin (11) is installed between the brake foot pedal (10) and the unlocking foot pedal (9), and a first eyelet rivet (12) is installed between the brake foot pedal (10) and the brake spring plate (8).

10. A double-brake caster with a stacked brake device according to claim 1, characterized in that, The inner end of the brake pedal (10) is machined to form a wedge-shaped locking part, and the unlocking pedal (9) is machined to form a snap-fit ​​part. The wedge-shaped locking part and the snap-fit ​​part are interlocked to form a dead point (19).

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