Overspeed switch support

Abstract

The utility model discloses an overspeed switch support, and belongs to the field of brake protection of hoisting equipment. The support comprises a fixed support, an overspeed switch and an L-shaped switch fixing piece. The fixed bracket is provided with a middle section and a side section which forms an obtuse angle with the middle section, and a mounting column is arranged on the middle section; one side of the switch fixing piece sleeves the mounting column through the bracket mounting hole and is fixed through the mounting nut assembly, and the other side of the switch fixing piece fixes the overspeed switch through the switch mounting hole; a rotating shaft of the overspeed switch is connected with a meter counting wheel. Through a unique bending support structure and an integrated fixing mode, the problems that an existing overspeed switch is limited in installation plane, needs split installation, is easy to loosen and the like are effectively solved, and the overspeed switch is especially suitable for electric hoist equipment with a cable, and has the advantages of being simple and convenient to install, compact in structure and good in vibration resistance performance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the brake protection field of hoisting equipment, and particularly relates to an overspeed switch support and an overspeed switch. BACKGROUND

[0002] Overspeed switches are used for motor speed detection and protection, especially for heavy hoisting equipment and the like.

[0003] For heavy hoisting equipment such as electric hoists, most of the current overspeed switches need a base or a mounting flange for installation and setting, and cannot be adapted to all irregular installation planes. Moreover, the current overspeed switches are usually composed of an encoder, a support and a controller, are large in size and need to be installed in parts, and are inconvenient to operate. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model sets an overspeed switch support, so that the overspeed switch can be more widely installed and set on various heavy hoisting equipment, especially electric hoist equipment with cables.

[0005] The utility model adopts the technical scheme that:

[0006] An overspeed switch support comprises:

[0007] a fixed support, an overspeed switch and a switch fixing member;

[0008] The switch fixing member is of an L-shaped structure, one side of which is connected with the fixed support, and the other side of which is connected with the overspeed switch;

[0009] The fixed support comprises a middle section and two side sections, the side sections being located at two ends of the middle section, and two mounting columns being arranged on the middle section;

[0010] One side of the switch fixing member connected with the fixed support is provided with two support mounting holes, the hole diameter of the support mounting holes matching the diameter of the mounting columns;

[0011] The switch fixing member is sleeved on the mounting columns through the support mounting holes and is fixed through a mounting nut assembly.

[0012] The side sections are arranged at obtuse angles with the middle section.

[0013] The side sections are of hook-shaped structures.

[0014] The mounting nut assembly comprises a nut, a gasket and a spring, and the spring is arranged between the nut and the gasket.

[0015] The side of the switch fixing part connected with the overspeed switch is provided with a switch mounting hole, and the overspeed switch is provided with a rotating shaft, and the rotating shaft penetrates through the switch mounting hole.

[0016] The circumferential side of the switch mounting hole is provided with a plurality of screw holes, and the side of the rotating shaft of the overspeed switch is also provided with a plurality of screw holes, and the overspeed switch is tightly fixed through the screw holes after the rotating shaft penetrates through the switch mounting hole, so that the connection with the switch fixing part is completed.

[0017] Further comprising a metering wheel and a connecting boss, the connecting boss is provided with a rotating shaft connecting hole, the rotating shaft penetrates into the rotating shaft connecting hole, and the metering wheel is sleeved outside the connecting boss.

[0018] The overspeed switch is an integrated digital display overspeed switch, and the structure further comprises a digital display circuit board and a wiring port.

[0019] One end of the rotating shaft is provided with a magnet, and the digital display circuit board is provided with a magnetic encoding chip, and the magnet detects the change period of the magnetic field by cooperating with the magnetic encoding chip, so as to detect the rotating speed.

[0020] The beneficial effects of the utility model are that: the fixed support is designed as a bending structure with a specific angle, which can be closely attached and firmly installed on the irregular shell surface of the electric hoist and other equipment, and solves the technical problems that the traditional overspeed switch needs a specific base or flange and cannot adapt to various installation planes. Moreover, the utility model adopts the L-shaped switch fixing part to connect the integrated digital display overspeed switch and the fixed support, and connects the metering wheel with the rotating shaft of the overspeed switch through the connecting boss, which saves the complicated steps of split type installation, makes the overall structure more compact, and saves the installation space. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure view of the utility model.

[0022] Figure 2 It is the front view of the utility model.

[0023] Figure 3 It is the rear view of the utility model.

[0024] Figure 4 It is the side view of the utility model.

[0025] Figure 5 It is the explosion structure view of the utility model.

[0026] Figure 6 It is the cross-sectional structure view of the utility model.

[0027] In the figure: 1, fixed support; 11, middle section; 12, side section; 13, mounting column; 2, overspeed switch; 21, rotating shaft; 22, digital display circuit board; 23, wiring port; 3, switch fixing part; 31, support mounting hole; 32, switch mounting hole; 4, metering wheel; 5, mounting nut assembly; 51, nut; 52, gasket; 53, spring; 6, connecting boss; 61, rotating shaft connecting hole. DETAILED DESCRIPTION

[0028] The utility model will be described in detail below in combination with the drawings.

[0029] As Figures 1 to 6 An overspeed switch 2 support, comprising a fixed support 1, an overspeed switch 2 and a switch fixing part 3. The overspeed switch 2 is fixedly arranged on the fixed support 1 through the switch fixing part 3.

[0030] The overall structure of the fixed support 1 includes a middle section 11 and a side section 12. The middle section 11 is a flat straight bar, and the side section 12 is arranged at both ends of the middle section 11 and is arranged at an obtuse angle between the middle section 11. As a preferred embodiment of the utility model, the structure of the side section 12 is hook-shaped, and the hook-shaped structure enables it to be better fixedly arranged on the target electrical appliance including an electric hoist.

[0031] The middle section 11 of the fixed support 1 is provided with two mounting columns 13, and the mounting columns 13 are in a cylindrical shape. The switch fixing part 3 is in an overall L-shaped structure, one side of which is connected with the fixed support 1, and the other side is connected with the overspeed switch 2. The middle section of the side connected with the fixed support 1 of the switch fixing part 3 is provided with two holes, namely support mounting holes 31. The diameters of the two support mounting holes 31 are the same as the diameter of the bottom surface of the mounting column 13, and the spacing between the two support mounting holes 31 is the same as the spacing between the two mounting columns 13. Through this structure, the switch fixing part 3 can pass through the mounting column 13 from the support mounting hole 31 and be finally sleeved on the fixed support 1.

[0032] After the sleeve of the switch fixing part 3 is completed, the switch fixing part 3 is fixedly installed on the fixed support 1 through the mounting nut 51 assembly 5. The mounting nut 51 assembly 5 includes a nut 51, a gasket 52 and a spring 53. When the nut 51 is tightened, the inside spring 53 will be compressed, generating a counteracting force to generate additional friction on the threads, thereby making the fixing of the nut 51 more stable. The gasket 52 plays a role in protecting the contact surface of the nut 51 and further increasing the friction.

[0033] After the overspeed switch 2 is installed on the fixed support 1, the fixed support 1 is fixedly arranged on the rotating drum shell of the electric hoist. Through this mounting structure, the cumbersome steps of separately installing the traditional overspeed switch 2 are avoided.

[0034] The side, where the switch fixing piece 3 is connected with the overspeed switch 2, is provided with a switch mounting hole 32, and the periphery of the switch mounting hole 32 is provided with a plurality of screw holes. The screw holes are opposite to the screw holes arranged on the overspeed switch 2. After the rotating shaft 21 of the overspeed switch 2 passes through the switch mounting hole 32, the overspeed switch 2 can be fixed on the switch mounting hole 32 of the switch fixing piece 3 through the screw fixing mode, so that the assembly is completed.

[0035] In the utility model, as preferred, the overspeed switch 2 is integrated digital overspeed switch 2. The overspeed switch 2 includes rotating shaft 21, digital display circuit board 22 and wiring port 23, which are used for real-time detection of motor speed and display the speed on the digital display screen of digital display circuit board 22. The rotating shaft 21 is connected with target detection equipment and transmits speed signal in real time. The rotating shaft 21 is provided with magnet on one side inside the overspeed switch 2, which cooperates with the magnetic encoding chip on the digital display circuit board 22, obtains the speed signal by detecting the periodical change of magnetic field. The wiring port 23 is arranged on the lower side of the overspeed switch 2 and is used for connecting external devices such as power supply and controller. If the speed exceeds the threshold value, the overspeed switch 2 sends brake signal and flashes warning information on the digital display screen.

[0036] Since the utility model is mainly used for monitoring the speed of heavy lifting equipment such as electric hoist, the cable of the equipment is connected with the speed monitoring device such as overspeed switch 2 to accurately reflect the real-time speed of the equipment. The utility model connects the cable of electric hoist with metering wheel 4. The metering wheel 4 is connected with the rotating shaft 21 of the overspeed switch 2 through the connecting boss 6, and the connecting boss 6 is provided with rotating shaft connecting hole 61, and the inner diameter of the rotating shaft connecting hole 61 is equivalent to the diameter of the rotating shaft 21. During installation, the rotating shaft 21 of the overspeed switch 2 is first passed through the switch mounting hole 32, then the connecting boss 6 is fixedly connected with the rotating shaft 21 of the overspeed switch 2 through the rotating shaft connecting hole 61, and then the metering wheel 4 is sleeved on the outer side of the connecting boss 6. When the cable of the electric hoist equipment rotates, the rotating shaft 21 is also driven to rotate synchronously, so that the purpose of accurately measuring the speed of the electric hoist equipment is achieved.

[0037] The overspeed switch 2 support of the utility model is integrally installed on the rotating drum shell of electric hoist, and the bending structure of the fixed support 1 is adapted to different shapes of mounting surfaces, especially suitable for electric hoist equipment with cable, and has the advantages of simple installation, compact structure and good vibration resistance.

[0038] The above describes the specific structural features, the use method and the advantages of the present application. It should be noted that the specific implementation of the present application is not limited by the above method, as long as various non-essential improvements are made by using the technical scheme of the present application, or the concept and technical scheme of the present application are directly applied to other occasions without improvement, which are all within the protection scope of the present application. The scope of protection required by the present application is defined by the claims and their equivalents.

Claims

1. An overspeed switch bracket, characterized by, The utility model relates to a kind of fixed support, overspeed switch and switch fixing part, comprising: The switch fixing part (3) is L-shaped structure, one side is connected with the fixed support (1), and the other side is connected with the overspeed switch (2); The fixed support (1) includes middle section (11) and two side sections (12), the side section (12) is located at both ends of the middle section (11), and two mounting columns (13) are provided on the middle section (11); The side of the switch fixing part (3) connected with the fixed support (1) is provided with two support mounting holes (31), and the hole diameter of the support mounting hole (31) matches the diameter of the mounting column (13); The switch fixing part (3) is sleeved on the mounting column (13) through the support mounting hole (31), and is fixed by mounting nut assembly (5). The side section (12) is arranged at an obtuse angle with the middle section (11).

2. The overspeed switch bracket of claim 1, wherein: The side section (12) is hook-shaped structure.

3. The overspeed switch bracket of claim 2, wherein: The mounting nut assembly (5) includes nut (51), gasket (52) and spring (53), and the spring (53) is arranged between the nut (51) and the gasket (52).

4. The overspeed switch bracket of claim 1, wherein: The side of the switch fixing part (3) connected with the overspeed switch (2) is provided with switch mounting hole (32), and the overspeed switch (2) is provided with rotating shaft (21), and the rotating shaft (21) passes through the switch mounting hole (32).

5. The overspeed switch bracket of claim 1, wherein: The periphery of the switch mounting hole (32) is provided with a plurality of screw holes, and the side of the overspeed switch (2) provided with rotating shaft (21) is also provided with a plurality of screw holes, and the overspeed switch (2) is tightly fixed by screw after rotating shaft (21) passes through switch mounting hole (32) to complete the connection with switch fixing part (3).

6. The overspeed switch bracket of claim 5, wherein, It also includes metering wheel (4) and connecting boss (6), the connecting boss (6) is provided with rotating shaft connecting hole (61), the rotating shaft (21) penetrates into the rotating shaft connecting hole (61), and the metering wheel (4) is sleeved outside the connecting boss (6).

7. The overspeed switch bracket of claim 5, wherein: The overspeed switch (2) is an integrated digital overspeed switch, and the structure further includes digital display circuit board (22) and wiring port (23).

8. The overspeed switch bracket of claim 5, wherein, One end of the rotating shaft (21) is provided with a magnet, and the digital display circuit board (22) is provided with a magnetic encoding chip, and the magnet detects the change period of magnetic field by cooperating with the magnetic encoding chip to detect the rotating speed.

9. The overspeed switch bracket of claim 8, wherein, ​

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