A silent limit blocking device

Abstract

A silent limit blocking device includes a main controller, a photoelectric sensor, a limit blocking component and a blocking block, wherein the main controller is connected to the limit blocking component and the photoelectric sensor respectively, and the blocking block is arranged on one side of the limit blocking component; the limit blocking component includes a base, a slide rail is fixed on the upper end of the base, a fixed limit block is arranged at one end of the slide rail, a movable limit block is installed on the slide rail through a limit guide wheel, an auxiliary limit deceleration buffer rubber strip is installed on the slide rail through a butterfly quick release nut, and a flat chain is arranged on one side of the slide rail; the fixed limit block is provided with a distance sensor connected to the main controller, and the movable limit block is provided with a distance regulator that cooperates with the distance sensor. The present invention can be used for the limit work of linear and rotary motion, and an analog-to-digital conversion feedback loop is formed by an adjustable distance sensor, so as to realize precise control of the limit buffer process.

Description

Technical Field

[0001] The invention relates to a position limiting and blocking device, in particular to a silent position limiting and blocking device. Background Art

[0002] In the design of limit blocks for rotary working equipment, direct collision contact limit blocks are commonly used. Although this type of limit block has a simple structure, the buffering distance at the moment of collision is not large, and the collision force is huge, which can easily lead to limit breakage. In addition, the collision sound is too loud, which can easily lead to abnormal safety risks. Some existing hydraulic buffers are generally used for limit blocking under low-speed motion conditions. For large-impact limit collisions, buffer failure is likely to occur, and the adaptability is not strong, and it cannot meet the requirements of various collision kinetic energy occasions. The existing isolation limit blocking device is not modular, has a high manufacturing cost, and a complex adjustment process. In particular, the limit device that uses a limit switch alone has a long travel required for the limit, and the acceptable collision energy is not high. Summary of the invention

[0003] The purpose of the present invention is to provide a silent limit blocking device, which solves the problems of high design cost, complicated use and removal process, and limited applicable scenarios of existing blocking devices.

[0004] The technical solution adopted to achieve the above-mentioned purpose is: a silent limit blocking device, including a main controller, a photoelectric sensor, a limit blocking assembly and a blocking block, the main controller is respectively connected to the limit blocking assembly and the photoelectric sensor, and the blocking block is arranged on one side of the limit blocking assembly; the limit blocking assembly includes a base, a slide rail is fixed to the upper end of the base, a fixed limit block is arranged at one end of the slide rail, a movable limit block is installed on the slide rail through a limit guide wheel, an auxiliary limit deceleration buffer strip is installed on the slide rail through a butterfly quick-release nut, and a flat chain is arranged on one side of the slide rail; the fixed limit block is provided with a distance sensor connected to the main controller, and the movable limit block is provided with a distance adjuster that cooperates with the distance sensor.

[0005] Furthermore, the main controller is connected to the photoelectric sensor and the flat chain on the limit blocking component at the same time. The flat chain uses its self-winding characteristics to facilitate cable fixation and follow-up. The terminal of the flat chain is connected to the distance sensor and the distance adjuster.

[0006] Furthermore, the fixed limit block and the movable limit block both have electromagnetic polarity, and the electromagnetic polarities of the fixed limit block and the movable limit block are configured in opposite directions to exert a blocking force.

[0007] Furthermore, the auxiliary limit deceleration buffer rubber strip is a configurable buffer device, which is installed on the slide rail through a butterfly quick-release nut and is pre-tightened with the limit guide wheel to ensure that the initial state of the movable limit block can be fixed.

[0008] Furthermore, a buffer rubber pad is provided on the side of the movable limit block.

[0009] Furthermore, the blocking block is installed on the working surface to be blocked.

[0010] Beneficial Effects

[0011] Compared with the prior art, the present invention has the following advantages.

[0012] 1. The present invention can be used in the limiting working occasions of linear motion and rotary motion, especially in the occasions where instantaneous impact is not allowed and non-contact limiting is required. It can also be used to improve the occasions where the environment is highly affected by the impact of the limit due to abnormal conditions, such as the impact of severe noise;

[0013] 2. The position limiting and blocking components of the present invention can be configured in multiple groups to form a buffer mechanism with multi-level buffer force;

[0014] 3. The present invention can form an analog-to-digital conversion feedback loop through an adjustable distance sensor and the magnitude of the current passing through the electromagnet, thereby achieving precise control of the limit buffer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a top view of the structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the position limiting and blocking component in the present invention. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with embodiments and drawings.

[0019] like Figure 1 , 2 As shown, a silent limit blocking device includes a main controller 1, a photoelectric sensor 8, a limit blocking component 6 and a blocking block 7, wherein the main controller 1 is connected to the limit blocking component 6 and the photoelectric sensor 8 respectively, and the blocking block 7 is arranged on one side of the limit blocking component 6; the limit blocking component 6 includes a base 9, a slide rail 3 is fixed to the upper end of the base 9, a fixed limit block 10 is arranged at one end of the slide rail 3, a movable limit block 5 is installed on the slide rail 3 through a limit guide wheel 15, an auxiliary limit deceleration buffer strip 2 is installed on the slide rail 3 through a butterfly quick-release nut 14, and a flat chain 4 is arranged on one side of the slide rail 3; the fixed limit block 10 is provided with a distance sensor 11 connected to the main controller 1, and the movable limit block 5 is provided with a distance adjuster 12 that cooperates with the distance sensor 11.

[0020] The main controller 1 is connected to the photoelectric sensor 8 and the flat chain 4 on the limit blocking component 6 at the same time. The flat chain 4 uses its self-winding characteristics to facilitate cable fixation and follow-up. The terminal of the flat chain 4 is connected to the distance sensor 11 and the distance regulator 12.

[0021] The fixed limit block 10 and the movable limit block 5 both have electromagnetic polarity, and the electromagnetic polarities of the fixed limit block 10 and the movable limit block 5 are oppositely configured to play a blocking force role.

[0022] The auxiliary limit deceleration buffer rubber strip 2 is a configurable buffer device, which is installed on the slide rail 3 through a butterfly quick-release nut 14 and pre-tightened with the limit guide wheel 15 to ensure that the initial state of the movable limit block 5 can be fixed.

[0023] A buffer rubber pad 13 is provided on the side of the movable limiting block 5 .

[0024] The blocking block 7 is installed on the working surface to be blocked.

[0025] In the present invention, the fixed limit block 10 has electromagnetic polarity and can provide electromagnetic force in a fixed direction.

[0026] The auxiliary limit deceleration buffer rubber strip 2 is a buffer device that can be equipped with a buffer device, which accelerates the buffering by increasing the squeezing force of the inner limit guide wheel 15.

[0027] The limiting guide wheel 15 installed on the movable limiting block 5 is pre-tightened with the auxiliary limiting deceleration buffer rubber strip 2 to ensure that the initial state of the movable limiting block 5 can be fixed.

[0028] The movable limit block 5 is provided with a buffer rubber pad 13 . The movable limit block 5 has an electromagnetic polarity which is opposite to that of the fixed limit block 10 so as to exert a blocking force, and the blocking force is adjustable.

[0029] The distance adjuster 12 is installed on the movable limit block 5 and is used to adjust the electromagnetic force by obtaining the adjustable buffer distance L1.

[0030] In the specific implementation of the present invention: (1) Select the movable limit block 5 of suitable components, install it on the slide rail 3 through the limit guide wheel 15, and pre-tighten it. Decide whether to configure the auxiliary limit deceleration buffer rubber strip 2 according to the required blocking force, and adjust the butterfly-type quick-release nut 14 to fix the auxiliary limit deceleration buffer rubber strip 2; (2) According to each group of movable limit blocks 5 and the adjustable buffer spacing L1, as well as the distance of the blocking block 7 relative to each movable limit block 5, adjust the required electromagnetic force to achieve the maximum blocking force effect. If the blocking force deceleration time is very short, the adjustable buffer spacing L1 can be reduced to quickly decelerate. If the blocking force deceleration time is long, the adjustable buffer spacing L1 can be reduced to quickly decelerate. The adjustable buffer distance L1 can be increased to achieve a smooth deceleration process; (3) The adjustable buffer distance L1 that changes during the deceleration process can be obtained through the distance sensor 11 and the distance regulator 12. The current blocking force can be obtained from the instantaneous electromagnetic current and the size of the adjustable buffer distance L1, and the main control center 1 can be fed back in real time to determine whether to increase or decrease the electromagnetic current; (4) The photoelectric sensor 8 plays an initial control role. When the photoelectric sensor 8 is triggered, the silent limit blocking device starts to work. When the working surface where the blocking block 7 is located is restored to the outside of the photoelectric sensor 8, the silent limit blocking device enters a dormant state.

Claims

1. A silent limit blocking device, comprising a main controller (1), a photoelectric sensor (8), a limit blocking component (6) and a blocking block (7), characterized in that: The main controller (1) is connected to the limit blocking component (6) and the photoelectric sensor (8) respectively, and the blocking block (7) is arranged on one side of the limit blocking component (6); the limit blocking component (6) comprises a base (9), a slide rail (3) is fixed on the upper end of the base (9), a fixed limit block (10) is arranged at one end of the slide rail (3), a movable limit block (5) is installed on the slide rail (3) through a limit guide wheel (15), and an auxiliary limit deceleration buffer rubber strip (2) is installed on the slide rail (3) through a butterfly quick-release nut (14). A flat chain (4) is provided on one side of the slide rail (3); a distance sensor (11) connected to the main controller (1) is provided on the fixed limit block (10); a distance adjuster (12) inductively cooperating with the distance sensor (11) is provided on the movable limit block (5); both the fixed limit block (10) and the movable limit block (5) have electromagnetic polarity, and the electromagnetic polarities of the fixed limit block (10) and the movable limit block (5) are arranged in opposite directions to play a blocking role; and a buffer rubber pad (13) is provided on the side of the movable limit block (5).

2. A silent limit blocking device according to claim 1, characterized in that: The main controller (1) is connected to the photoelectric sensor (8) and the flat chain (4) on the limit blocking component (6) at the same time. The flat chain (4) utilizes its self-winding characteristics to facilitate cable fixation and follow-up. The terminal of the flat chain (4) is connected to the distance sensor (11) and the distance regulator (12).

3. A silent limit blocking device according to claim 1, characterized in that: The auxiliary limit deceleration buffer rubber strip (2) is a configurable buffer device. The auxiliary limit deceleration buffer rubber strip (2) is installed on the slide rail (3) through a butterfly quick-release nut (14) and is pre-tightened with the limit guide wheel (15) to ensure that the initial state of the movable limit block (5) can be fixed.

4. A silent limit blocking device according to claim 1, characterized in that: The blocking block (7) is installed on the working surface to be blocked.

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