CN219115421U - Brake mechanism and trolley using same - Google Patents

Abstract

The utility model provides a brake mechanism and a trolley using the brake mechanism, comprising: a hydraulic drive module; a speed reducing motor; the electric push rod is connected with the speed reducing motor and used for executing linear reciprocating motion under the action of the speed reducing motor; the electric drive connecting rod is connected with the electric push rod and is used for synchronously moving under the action of the electric push rod; the trigger connecting rod is rotatably arranged on the hydraulic driving module and is divided into a first rod part and a second rod part by a rotation center, the first rod part is connected with the other end of the electric driving connecting rod and synchronously moves under the action of the electric driving connecting rod, and the second rod part moves in the movement direction opposite to the first rod part so as to trigger the hydraulic driving module to drive the brake block to execute braking action. Therefore, the simple and efficient brake mechanism is provided, can be more optimally applied to the trolley, changes the original single brake mode of adopting a brake pedal, realizes vehicle braking by adopting an electric control mode, and is convenient for realizing remote brake control.

Description

Brake mechanism and trolley using same

Technical Field

The utility model relates to the field of vehicles, in particular to a braking mechanism and a trolley using the same.

Background

The braking mechanism is an important component of the vehicle, and the braking is a mechanical braking device capable of slowing down the vehicle, and is also called a speed reducer. Most of the trolleys adopt mechanical hydraulic braking, the basic principle is that a driver steps on a brake pedal, pressure is applied to brake oil in a brake master cylinder, the pressure is transmitted to a piston of each wheel brake caliper through a pipeline by liquid, and the piston drives the brake caliper to clamp the brake pad, so that huge friction force is generated to slow down the vehicle.

In the face of complex road conditions and environments under special transportation operations, the requirement that the trolley has an automatic or semi-automatic running function capable of being separated from the operation of a driver is based on the requirement, when the conventional trolley using mechanical brakes is modified to have the function, an automatic treading device capable of applying acting force to the pedals is required to be added to enable the trolley to have remote braking control due to the limitation of the brake pedals, the complexity of the device is high, the device cannot adapt to the switching between manual driving, and the treading device is required to be removed when the manual driving is restored.

Therefore, a brake mechanism which is simpler and more efficient and can be convenient for remote brake control is lacking in the prior art, and the trolley can be provided with the brake mechanism on the basis of traditional mechanical brake.

Disclosure of Invention

To solve the drawbacks of the prior art, one aspect of the present utility model provides a brake mechanism, including: a hydraulic drive module; a gear motor; the electric push rod is connected with the speed reducing motor and used for executing linear reciprocating motion under the action of the speed reducing motor; one end of the electric drive connecting rod is connected with the electric push rod and used for synchronously moving under the action of the electric push rod; and the trigger connecting rod is rotatably arranged on the hydraulic driving module and is divided into a first rod part and a second rod part by a rotation center in the Y-axis direction, the first rod part is connected with the other end of the electric driving connecting rod and synchronously moves under the action of the electric driving connecting rod, and the second rod part moves in the movement direction opposite to the first rod part to trigger the hydraulic driving module to drive the brake block to execute braking action.

Preferably, the gear motor is composed of a driving motor and a gear reducer connected to each other.

Preferably, the first rod portion is connected with the electric drive connecting rod through a first pin shaft, wherein the first pin shaft penetrates through the first rod portion and the electric drive connecting rod.

Preferably, the hydraulic drive module has a recess that covers the length of the second shaft in the Y direction; and a second pin penetrating the groove to be fixed on the hydraulic driving module; wherein the second pin extends through the second stem portion to define an end of the second stem portion within the recess.

Preferably, a pin rod is arranged in the groove, and the other end of the second rod part can apply acting force to the pin rod in a motion state so that the pin rod triggers the hydraulic driving module to do work.

Preferably, the braking mechanism further comprises a braking mechanical pull rod connected with the first rod part, and the braking mechanical pull rod is used for driving the first rod part to move under the action of external force.

Preferably, the first rod portion is further connected to the electrically driven connecting rod through a third pin, wherein the third pin penetrates through the first rod portion, the brake mechanical connecting rod and the electrically driven connecting rod, and enables the brake mechanical connecting rod to be hinged to the first rod portion.

Preferably, the brake mechanism is fixed to a beam.

Preferably, the beam frame is provided with a fixing plate, one side of the fixing plate is connected with the hydraulic driving module, and the other side of the fixing plate is connected with the speed reducing motor through a connecting plate.

To address the deficiencies of the prior art referred to in the background, one aspect of the present utility model is to provide a trolley comprising a structure for mounting the aforementioned brake mechanism to the trolley.

Through the arrangement of the utility model, a simpler and more efficient brake mechanism is provided, so that the brake mechanism can be more optimally applied to a trolley, an original single brake mode of adopting a brake pedal is changed, vehicle braking is realized by adopting an electric control mode, and remote brake control is facilitated.

The utility model maintains the original mechanical brake of the trolley, and adds the electric control brake on the basis of the original mechanical brake, thereby realizing the double-brake braking mode of electric control and machinery, and being capable of effectively adapting to the switching between manual driving and remote control/automatic driving of the trolley.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only embodiments of the present application, and other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view showing a brake mechanism according to one embodiment of the present utility model;

FIG. 2 is a front view of a brake mechanism according to one embodiment of the present utility model;

FIG. 3 is a rear view of a brake mechanism according to one embodiment of the present utility model;

FIG. 4 is a right side view of a brake mechanism according to one embodiment of the present utility model;

FIG. 5 is a schematic view showing the movement direction of each component of a brake mechanism according to one embodiment of the present utility model;

FIG. 6 illustrates a front view of a beam provided by one embodiment of the present utility model;

FIG. 7 is a perspective view of a beam according to one embodiment of the present utility model;

fig. 8 is an enlarged schematic view of the portion a in fig. 7.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

According to one aspect of the utility model, a brake mechanism is provided for a trolley, preferably for a logistics trolley, i.e. it can be used as a part of the logistics trolley, wherein the logistics trolley is a vehicle mainly used for logistics transportation, which has a remote control driving function and/or an unmanned function, and the logistics transportation is understood to be only a preferable application scene of the vehicle, but not limited to other purposes.

Referring to fig. 1-5, in some embodiments, the brake mechanism 1 of the present application is composed of at least a hydraulic drive module 10, a gear motor 11, an electric push rod 12, an electric drive link 13, and a trigger link 14.

The hydraulic driving module 10 is specifically a hydraulic pump, which is also called a master cylinder or a master cylinder in the field of vehicle braking, and applies pressure to brake oil in the master cylinder by pushing a piston in the master cylinder to move, the pressure is transmitted to a piston of a brake caliper by liquid through a pipeline, and the piston drives the brake caliper to clamp a brake pad, so that huge friction force is generated to brake the vehicle.

The gear motor 11 is composed of a driving motor 110 and a gear reducer 111, and the driving motor 110 is connected to the gear reducer 111, which means that the integrated body of the driving motor 110 and the gear reducer 111 constitutes the gear motor 11. Such an integrated body may also be generally referred to as a gearmotor or gearmotor. The gear motor 11 generally drives a large gear to achieve a certain speed reduction purpose through a small gear on an input shaft of the gear reducer 111 by using a motor, an internal combustion engine or other power running at high speed, and then adopts a multi-stage structure, the rotation speed can be greatly reduced, and the output torque of the gear motor 11 can be increased. The core 'boosting and decelerating' function is to achieve the purpose of deceleration by utilizing the gear transmission of each stage, and the gear reducer 111 consists of gear pairs of each stage. In one embodiment, the supply voltage for the drive motor 110 is 12V or 24V.

The electric push rod 12 is specifically a linear driver, and is mainly a novel linear actuator formed by a motor push rod, a control device and other mechanisms, and can be considered as an extension of the rotating motor in terms of structure. The electric putter 12 is an electric drive device that converts the rotational motion of an electric motor into linear reciprocating motion of the putter, i.e., is capable of performing linear reciprocating motion by the gear motor 11. In one embodiment, the operating parameters of the electric putter 12 are: travel 10mm, driving force 130N, movement speed 60mm/s.

One end of the electric drive connecting rod 13 is connected with the electric push rod 12, and can synchronously move under the drive of the electric push rod 12, namely, linearly reciprocate with the same stroke as the electric push rod 12. The specific form of the electric drive connecting rod 13 is composed of an a rod part 130, a b rod part 131 and a c rod part 132, wherein the a rod part 130 is arranged in a vertical state with one end of the b rod part 131, the c rod part 132 is arranged in a vertical state with the other end of the b rod part 131, the b rod part 131 is taken as a reference surface, and the a rod part 130 is positioned above the c rod part 132; when connected to the electric putter 12, the one end of the a-bar portion is connected to the electric putter 12. The electric drive connecting rod 13 also has a lever force increasing function.

The trigger link 14 is disposed in parallel with the electric drive link 13 in the Z-axis direction in a spatial arrangement manner, and is rotatably disposed on the hydraulic drive module 10 and is separated into a first lever portion 140 and a second lever portion 141 by a rotation center in the Y-axis direction, the first lever portion 140 and the second lever portion 140 are disposed obliquely at a certain angle, the first lever portion 140 is connected with the c-lever portion 132 of the electric drive link 13, and is driven by the electric drive link 13 to move synchronously, i.e. to keep the same stroke movement with the electric drive link 13. Since the first lever portion 140 is disposed above the rotation center, and the second lever portion 141 is disposed below the rotation center, when the first lever portion 140 moves in one direction, the second lever portion 141 moves in a movement direction opposite to the first lever portion 140 based on a lever structure formed on the hydraulic driving module 10 to trigger the hydraulic driving module 10 to drive the brake pad to perform a braking action.

Referring to fig. 5, when the electric push rod 12 moves in the X1 direction under the action of the gear motor 11, the electric drive link 13 moves in the X1 direction under the drive of the electric push rod 12, the first lever portion 140 moves in the X1 direction under the drive of the electric drive link 13, and the second lever portion 141 moves in the X2 direction. It should be appreciated that when the electric push rod 12, the electric drive link 13, and the first lever portion 140 move in the X2 direction, the second lever portion 141 moves in the X1 direction.

In some embodiments, the first rod 140 is connected to the c-rod 132 of the electric drive link 13 by a first pin 16, wherein the first pin 16 extends through the first rod 140 and the c-rod 132.

In some embodiments, the hydraulic drive module 10 has a recess 100 that covers the length of the second rod portion 141 in the Y-direction; and a second pin 101 penetrating the groove 100 to be fixed to the hydraulic driving module 10; wherein the second pin 101 penetrates the second rod portion 141 to define one end of the second rod portion 141 within the groove 100. The groove 100 is formed by a rectangular groove and a circular groove, and the circular groove is located below the rectangular groove in the Y-axis direction. The second pin shaft 101 penetrates from one end of the hydraulic driving module 10, passes through the rectangular groove and finally penetrates from the other end of the hydraulic driving module 10, the second rod portion 141 is sleeved on the second pin shaft 101 in the rectangular groove, and one end of the second rod portion 141 is limited on the second pin shaft 101 in the groove 100 based on the arrangement mode. The recess 100 has a pin 102 therein, the pin 102 being specifically disposed in the circular recess, and the other end of the second rod portion 141 being capable of applying a force to the pin 102 in a moving state, such that the pin 102 triggers the hydraulic drive module 10 to perform work. It should be appreciated that when the second lever portion 141 moves in the X2 direction, a pushing force can be applied to the pin 102 to drive the pin 102 to move in the X2 direction, so that a piston inside the hydraulic driving module 10 can be pushed to apply work to brake oil of the hydraulic driving module 10, the hydraulic fluid transfers the pressure to a piston of a brake caliper through a pipeline, and the piston drives the brake caliper to clamp a brake pad, thereby generating a huge friction force to brake the vehicle.

Through the arrangement of the utility model, a simpler and more efficient brake mechanism is provided, so that the brake mechanism can be more optimally applied to a trolley, an original single brake mode of adopting a brake pedal is changed, vehicle braking is realized by adopting an electric control mode, and remote brake control is facilitated.

In some embodiments, the gear motor 11 is electrically connected to a controller, and the controller can receive a remote control signal sent by a remote control device, and control the on/off and/or rotational speed control of the gear motor 11 according to the remote control signal, where the remote control device can convert the remote control signal into different electromagnetic wave signals and transmit the different electromagnetic wave signals through a specific frequency band, so that the controller can receive the remote control signal in the corresponding frequency band and convert the remote control signal into different currents for controlling the gear motor 11. Based on this setting, it is possible to realize remote control of the brake mechanism 1 of the present application to perform braking.

Referring to fig. 1-5, in some embodiments, the brake mechanism 1 of the present application is formed by at least a hydraulic drive module 10, a gear motor 11, an electric push rod 12, an electric drive link 13, a trigger link 14, and a brake mechanical lever 15.

The brake mechanical pull rod 15 is connected to the first rod portion 140, and is used for driving the first rod portion 140 to move under the action of external force. The first rod portion 140 is further connected to the c-rod portion 132 of the electric drive link 13 through a third pin 17, wherein the third pin 17 penetrates the first rod portion 140, the brake mechanical link 15, and the c-rod portion 132 of the electric drive link 13, and articulates the brake mechanical link 15 to the first rod portion 140.

One end of the brake mechanical pull rod 15 is connected to a brake pedal, and the external force described herein represents the acting force from the brake pedal, it should be understood that when the brake pedal is depressed, the brake mechanical pull rod 15 can be driven to move in the X1 direction, the first rod portion 140 is driven by the brake mechanical pull rod 15 to move in the X1 direction, and the second rod portion 141 moves in the X2 direction.

That is, the original mechanical brake of the trolley is reserved, and the electric control brake is additionally arranged on the basis of the original mechanical brake, so that the double-brake braking mode of electric control and machinery is realized, and the automatic control device can be effectively suitable for switching between manual driving and remote control/automatic driving of the trolley.

It should be appreciated that in the manual driving mode, the electronically controlled brake (gear motor 11-hydraulic drive module 10) of the present application can be used as a brake assist source for a mechanical brake (brake mechanical tie 15-hydraulic drive module 10).

In some embodiments, a stopper 161 is provided on the first pin 16 and a stopper 171 is provided on the third pin 17, with a stopper 161,171 located between the first stem 140 and the c-stem 132.

Referring to fig. 6-8, in some embodiments, the brake mechanism 1 of the present application is secured to a beam 20. The beam 20 has a fixing plate 201, and the fixing plate 201 and the beam 20 are preferably integrally formed, or may be detachably connected. The fixed plate 201 is connected to the hydraulic drive module 10 on one side and to the gear motor 11 on the other side via a connecting plate 18. The brake mechanism 1 can be mounted on the beam 20 by the installation of the fixing plate 201, and the brake mechanism 1 can be mounted on the carriage by the installation of the beam 20.

In one aspect the utility model also provides a trolley having the structure of the brake mechanism 1 described hereinbefore for mounting it on the trolley.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Reference numerals illustrate:

hydraulic drive module 10

Groove 100

Second pin shaft 101

Pin 102

Gear motor 11

Drive motor 110

Gear reducer 111

Electric push rod 12

Electric drive connecting rod 13

a stem 130

b pole part 131

c stem 132

Trigger link 14

First stem 140

Second rod portion 141

Mechanical tie rod 15 for braking

First pin 16

Stopper 161,171

Third pin shaft 17

Connection plate 18

Beam frame 20

Fixing plate 201

Claims (10)

1. A brake mechanism, comprising:

a hydraulic drive module (10);

a gear motor (11);

an electric push rod (12) connected with the gear motor (11) and used for executing linear reciprocating motion under the action of the gear motor (11);

one end of the electric drive connecting rod (13) is connected with the electric push rod (12) and used for synchronously moving under the action of the electric push rod (12); and

the trigger connecting rod (14) is rotatably arranged on the hydraulic driving module (10) and is divided into a first rod part (140) and a second rod part (141) by a rotation center in the Y-axis direction, the first rod part (140) is connected with the other end of the electric driving connecting rod (13) and synchronously moves under the action of the electric driving connecting rod (13), and the second rod part (141) moves in the opposite movement direction of the first rod part (140) to trigger the hydraulic driving module (10) to drive the brake block to execute braking action.

2. Brake mechanism according to claim 1, characterized in that the gear motor (11) is constituted by a drive motor (110) and a gear reducer (111) connected to each other.

3. The brake mechanism according to claim 1, characterized in that the first lever part (140) is connected with the electrically driven link (13) by a first pin (16), wherein the first pin (16) extends through the first lever part (140) and the electrically driven link (13).

4. The brake mechanism according to claim 1, characterized in that the hydraulic drive module (10) has a recess (100) which covers the length of the second lever portion (141) in the Y-direction; and

a second pin (101) penetrating the groove (100) to be fixed on the hydraulic driving module (10); wherein the second pin (101) penetrates the second rod portion (141) to define one end of the second rod portion (141) within the groove (100).

5. The brake mechanism according to claim 4, wherein the groove (100) has a pin (102) therein, and the other end of the second lever portion (141) is capable of applying a force to the pin (102) in a moving state, so that the pin (102) triggers the hydraulic driving module (10) to perform work.

6. The brake mechanism of claim 1, further comprising a brake mechanical linkage (15) coupled to the first lever portion (140) for moving the first lever portion (140) under an external force.

7. The brake mechanism according to claim 6, characterized in that the first lever part (140) and the electrically driven link (13) are further connected by a third pin (17), wherein the third pin (17) penetrates the first lever part (140), the brake mechanical link (15) and the electrically driven link (13) and articulates the brake mechanical link (15) with the first lever part (140).

8. A brake mechanism according to claim 1, characterized in that the brake mechanism is fixed to a beam (20).

9. Brake mechanism according to claim 8, characterized in that the beam (20) has a fixed plate (201), which fixed plate (201) is connected on one side to the hydraulic drive module (10) and on the other side to the gear motor (11) via a connection plate (18).

10. A trolley comprising a structure for mounting the brake mechanism of any one of claims 1-9 to the trolley.

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