Limiting protection device for high-strength limit torque transmission arm

Abstract

The utility model discloses a limiting protection device for a high-strength limit torque transmission arm. The limiting protection device comprises a shell and a fixing cover. A bearing is embedded in the middle of the interior of the shell, a transmission rod is movably installed in the shell through the bearing, an external thread is arranged on the outer wall of the transmission rod, a movable ring is installed on the transmission rod and located on the inner side of the shell in a sleeving mode, an internal thread is arranged on the inner wall of the movable ring, and the internal thread is meshed with the external thread; the fixing cover is detachably installed on the front side of the shell through bolts, a screw hole is formed in the middle of the front end of the fixing cover in a penetrating mode, an outer threaded pipe is installed in the screw hole in a screwed mode, and the inner end of the outer threaded pipe is movably connected with an adjusting ring. The rotating range of the transmission arm can be accurately defined, the limiting switch on the adjusting ring can be triggered in time when the transmission arm reaches the preset rotating limit, the positions of the adjusting ring and the limiting switch can be rapidly adjusted by rotating the outer threaded pipe, and therefore the device can flexibly adapt to different work tasks and working condition changes; and the adaptability of equipment is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive technical field especially relates to a kind of limit protection device for high-strength limit torque transmission arm. BACKGROUND

[0002] In modern industrial production and many fields involving mechanical transmission, high-strength limit torque transmission arm is widely used in various large-scale mechanical equipment, automated production line and precision instruments and other key equipment. During operation, the transmission arm needs to withstand high torque load to ensure efficient power transmission and normal operation of the equipment.

[0003] However, in the traditional transmission system, there are many defects in the limit protection measures for high-strength limit torque transmission arm.

[0004] On the one hand, many limit devices lack precision and cannot accurately define the rotation range of the transmission arm for adaptive adjustment. When facing different work tasks and working condition changes, operators have difficulty in quickly and flexibly adjusting the limit protection parameters, which makes the equipment less adaptable to complex and variable working scenarios and cannot meet the demand for efficient and flexible operation in modern production.

[0005] On the other hand, the overall structure design of the traditional limit protection device is not reasonable. Some devices use complex structure layout to achieve multiple functions, which not only increases the manufacturing cost of the device but also makes it bulky, difficult to install and use in some strict space layout requirements of equipment and working environment, and often cannot be conveniently disassembled and assembled, making the later maintenance work more inconvenient.

[0006] Therefore, how to provide a limit protection device for high-strength limit torque transmission arm is a problem that technicians in the field need to solve. UTILITY MODEL CONTENTS

[0007] One purpose of the utility model is to provide a limit protection device for high-strength limit torque transmission arm. The utility model can accurately define the rotation range of the transmission arm. By adjusting the limit switch on the adjusting ring, it can be triggered in time when the transmission arm reaches the preset rotation limit, and the outer threaded tube can be easily rotated with the help of the hand wheel, so that the position of the adjusting ring and the limit switch can be quickly adjusted, making the equipment flexible to adapt to different work tasks and working condition changes, and significantly enhancing the adaptability of the equipment in complex and variable working scenarios.

[0008] According to the limit protection device for high-strength limit torque transmission arm of the utility model embodiment, the device comprises a shell and a fixed cover.

[0009] The bearing is centrally embedded and installed inside the shell, the transmission rod is movably installed in the shell through the bearing, an outer thread is formed on the outer wall of the transmission rod, and a movable ring is sleeved and installed on the transmission rod and inside the shell, an inner thread is formed on the inner wall of the movable ring, and the inner thread and the outer thread are in meshing connection.

[0010] The fixed cover is detachably installed on the front side of the shell through bolts, a threaded hole is centrally and penetratively formed in the front end of the fixed cover, an outer threaded pipe is screwed and installed in the threaded hole, an adjusting ring is movably connected to the inner end of the outer threaded pipe, the adjusting ring can be sleeved on the transmission rod, and limit switches are correspondingly installed on the upper and lower sides of the inner wall of the adjusting ring.

[0011] Further, limit guide rails are symmetrically and fixedly installed inside the shell and on the upper and lower sides of the transmission rod, and limit sliding grooves are symmetrically formed in the inner sides of the two groups of limit guide rails.

[0012] Further, first limit sliding blocks are integrally formed on the upper and lower sides of the movable ring, and second limit sliding blocks are integrally formed on the upper and lower sides of the adjusting ring, and the first limit sliding blocks and the second limit sliding blocks are slidably installed in the limit sliding grooves.

[0013] Further, an annular limit groove is formed on the side, close to the outer threaded pipe, of the adjusting ring, an annular limit block is arranged on the side, close to the adjusting ring, of the outer threaded pipe, and the annular limit block is rotatably installed in the annular limit groove.

[0014] Further, a connecting seat for fixedly connecting with a transmission arm rotating shaft is arranged at the end of the transmission rod and on the outer side of the shell.

[0015] Further, mounting seats are integrally formed at the four corners of the outer wall of the shell, and mounting holes are penetratively formed in each group of mounting seats.

[0016] Further, a hand wheel is fixedly installed at the front end of the outer threaded pipe and on the outer side of the fixed cover.

[0017] Further, the inner part of the outer threaded pipe is a hollow structure, and the inner diameter of the outer threaded pipe is greater than the outer diameter of the transmission rod.

[0018] The beneficial effects of the utility model are:

[0019] 1、The operator can rotate the hand wheel to move the adjusting outer threaded pipe in the utility model, and then conveniently adjust the positions of the adjusting ring and the limit switch, the adjusting mode can quickly and flexibly set the limit protection device according to different work tasks and working condition requirements in actual work, compared with the traditional fixed limit device, the operation convenience and efficiency are greatly improved, and the precision is higher, so that the operator can more easily cope with various working scenes, and the utility model can be applied to the installation and use of different models of transmission arms.

[0020] 2、The utility model discloses a hollow structure and the inside diameter is greater than the outer diameter of transmission rod of external thread pipe, this design guarantees that transmission rod can pass through external thread pipe successfully, realizes the compactness of the internal structure layout of device again, in the limited space, each component cooperates with each other, satisfies the multiple function demand such as transmission, spacing, adjustment, and also does not occupy too much space because of the complex structure design, is applicable to the strict requirement of each kind of equipment and application scene to space layout.

[0021] 3、The utility model discloses a fixed cover and shell detachable installation's design of bolt, the maintenance and overhaul work of equipment has brought great convenience, when needing to check, clean, replace the bearing, transmission rod and other components in the inside of device, maintenance personnel can conveniently detach the fixed cover, directly contacts the key components in the inside of device, thereby reduces the difficulty and time cost of maintenance work, improves the maintainability of equipment, helps to guarantee the long -term stable operation of equipment. ACCURATE DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0023] Figure 1 The whole structure schematic diagram of a kind of limit protection device for high-strength limit torque transmission arm proposed in the utility model is shown;

[0024] Figure 2 The rear view structure schematic diagram of a kind of limit protection device for high-strength limit torque transmission arm proposed in the utility model is shown;

[0025] Figure 3 The front view split diagram of a kind of limit protection device for high-strength limit torque transmission arm proposed in the utility model is shown;

[0026] Figure 4 The rear view split diagram of a kind of limit protection device for high-strength limit torque transmission arm proposed in the utility model is shown;

[0027] Figure 5 The fixed cover structure diagram of a kind of limit protection device for high-strength limit torque transmission arm proposed in the utility model is shown;

[0028] Figure 6 The split diagram of external thread pipe and adjusting ring of a kind of limit protection device for high-strength limit torque transmission arm proposed in the utility model is shown;

[0029] Figure 7 The end ring schematic diagram of external thread pipe of a kind of limit protection device for high-strength limit torque transmission arm proposed in the utility model is shown.

[0030] In the figure: 1, the shell; 2, fixed cover; 3, mounting seat; 4, outer threaded tube; 5, hand wheel; 6, bearing; 7, transmission rod; 8, connecting seat; 9, outer thread; 10, limit guide rail; 11, limit sliding slot; 12, movable ring; 13, first limit sliding block; 14, inner thread; 15, adjusting ring; 16, second limit sliding block; 17, limit switch; 18, threaded hole; 19, annular limit groove; 20, annular limit block. DETAILED DESCRIPTION

[0031] The utility model will be explained in further detail now in combination with the drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, so it only shows the relevant components of the utility model.

[0032] Please refer to Figures 1-5 A limit protection device for high-strength limit torque transmission arm, including shell 1 and fixed cover 2;

[0033] The bearing 6 is precisely embedded and installed in the central position inside the shell 1, and the transmission rod 7 is movably installed in the shell 1 through the bearing 6. This installation mode ensures that the transmission rod 7 can rotate smoothly in the shell 1, laying a foundation for subsequent power transmission and adjustment functions. The outer wall of the transmission rod 7 is specially designed with outer thread 9. This outer thread structure plays a key connection and driving role in the operation of the whole device.

[0034] The movable ring 12 is installed on the transmission rod 7 and inside the shell 1. The inner wall of the movable ring 12 is provided with an inner thread 14. The inner thread 14 is engaged with the outer thread 9 on the transmission rod 7. When the transmission rod 7 rotates, the movable ring 12 will move along the axial direction of the transmission rod 7 based on the screw transmission principle, thereby realizing position change.

[0035] Please refer to Figures 3-6 The fixed cover 2 is detachably installed on the front side of the shell 1 through bolts. This detachable connection mode is convenient for maintenance, repair and component replacement operations in the later stage.

[0036] The fixed cover 2 is detachably installed on the front side of the shell 1 through bolts. This detachable connection mode is convenient for maintenance, repair and component replacement operations in the later stage.

[0037] The inner end of the outer threaded pipe 4 is movably connected with an adjusting ring 15, the adjusting ring 15 can be sleeved on the transmission rod 7, and the upper and lower sides of the inner wall of the adjusting ring 15 are correspondingly provided with limit switches 17, when the movable ring 12 moves to the side of the adjusting ring 15 under the rotation of the transmission rod 7 and contacts, the limit switch 17 is triggered, at this time, the circuit can be automatically cut off, and the further movement of the transmission arm is limited.

[0038] Notably, the adjusting ring 15 is provided with an annular limiting groove 19 near one side of the outer threaded pipe 4, the outer threaded pipe 4 is provided with an annular limiting block 20 near the side of the adjusting ring 15, and the annular limiting block 20 is rotatably installed in the annular limiting groove 19, this special connecting structure not only ensures that the adjusting ring 15 can move axially with the rotation of the outer threaded pipe 4, but also limits the movement range of the adjusting ring 15 to a certain extent, preventing it from rotating excessively or separating from the outer threaded pipe 4.

[0039] Please refer to Figures 3-4 , the limit guide rails 10 are symmetrically and fixedly installed inside the shell 1 and on the upper and lower sides of the transmission rod 7, and the limit sliding grooves 11 are symmetrically formed in the inner sides of the two groups of limit guide rails 10, the limit guide rails 10 and the limit sliding grooves 11 jointly constitute a limit guide structure of the device, ensuring the stability and accuracy of other components during movement.

[0040] The upper and lower sides of the movable ring 12 are integrally formed with first limit sliding blocks 13, and the upper and lower sides of the adjusting ring 15 are integrally formed with second limit sliding blocks 16, the first limit sliding blocks 13 and the second limit sliding blocks 16 are slidably installed in the limit sliding grooves 11, in this way, when the movable ring 12 and the adjusting ring 15 move axially on the transmission rod 7, the first limit sliding blocks 13 and the second limit sliding blocks 16 will slide along the limit sliding grooves 11, not only playing a limiting role, but also enhancing the stability of the components during movement, avoiding shaking or deviation.

[0041] Please refer to Figure 1 , 2 and Figure 7 , the connecting seat 8 is arranged at the end of the transmission rod 7 and outside the shell 1, the connecting seat 8 is used for fixedly connecting with the transmission arm rotating shaft, so as to realize the close combination of the limit protection device and the power transmission system of the transmission arm, so that the device can effectively limit and protect the rotation of the transmission arm.

[0042] The four corners of the outer wall of the shell 1 are integrally formed with mounting seats 3, and mounting holes are formed in each group of mounting seats 3, through these mounting seats 3 and mounting holes, the entire limit protection device can be conveniently installed on the required equipment or structure, ensuring the stable installation and normal operation of the device in the actual application scene.

[0043] At the front end of the external thread pipe 4, and outside the fixed cover 2 fixedly installed hand wheel 5, the operator can drive the external thread pipe 4 rotation by rotating hand wheel 5, and then realize the adjustment of the adjusting ring 15 and the related position of the limit switch 17, convenient operation.

[0044] The external thread pipe 4 is hollow structure, and its inner diameter is larger than the outer diameter of the transmission rod 7, this hollow structure design on the one hand reduces the overall weight of the external thread pipe 4, on the other hand makes the transmission rod 7 can smoothly through the inside of the external thread pipe 4, ensure the rationality of the internal structure layout of the device, avoid affecting the normal transmission and adjustment function between parts.

[0045] Working principle: first through the connecting seat 8 and transmission arm shaft fixed connection, and through the installation seat 3 fixedly installed on the transmission arm outside the shell 1, then when the transmission arm shaft starts to run, the connecting seat 8 at the end of the transmission rod 7 fixedly connected with it rotates, and then drives the transmission rod 7 to rotate smoothly in the shell 1 through the bearing 6, because the external thread 9 of the transmission rod 7 outer wall and the internal thread 14 of the movable ring 12 inner wall are engaged with each other, with the rotation of the transmission rod 7, the movable ring 12 will move along the axial direction of the transmission rod 7 based on the screw transmission principle, in the process, the first limit slider 13 integrally formed on the upper and lower sides of the movable ring 12 will slide in the limit sliding groove 11 opened in the inside of the limit guide rail 10, in the normal working process of the transmission arm, when the transmission rod 7 drives the movable ring 12 to move to contact with the limit switch 17 which is set in advance, the limit switch 17 is triggered, as a kind of electrical appliance which switches circuit according to the travel position of the moving part, will immediately transmit the signal to the control circuit associated with it, the control circuit will respond quickly after receiving the signal, take appropriate measures, such as cutting off the power supply of the power source of the transmission arm, so that the transmission arm stops rotating, thereby avoiding the transmission arm from exceeding the safety range due to excessive rotation, realizing the effective limit protection of the transmission arm under high strength limit torque working condition, and the operator drives the external thread pipe 4 to rotate in the screw hole 18 at the front end of the fixed cover 2 by rotating the hand wheel 5 fixed at the front end of the external thread pipe 4, because the inner end of the external thread pipe 4 is rotatably connected with the annular limit groove 19 of the adjusting ring 15 through the annular limit block 20, so the rotation of the external thread pipe 4 will drive the adjusting ring 15 to move axially along the transmission rod 7, at the same time, the second limit slider 16 on the upper and lower sides of the adjusting ring 15 slides in the limit sliding groove 11, which plays a similar role of limiting and smooth movement with the first limit slider 13, through this way, the distance between the adjusting ring 15 and the limit switch 17 installed on the upper and lower sides of its inner wall and the position of the movable ring 12 can be accurately adjusted according to the actual work requirement, so it can be applied to the installation of different types of transmission arms.

[0046] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A limit protection device for a high-strength ultimate torque transmission arm, characterized in that, Includes a housing (1) and a fixing cover (2); A bearing (6) is centrally embedded inside the housing (1). A transmission rod (7) is movably installed inside the housing (1) via the bearing (6). The outer wall of the transmission rod (7) is provided with an external thread (9). A movable ring (12) is sleeved on the transmission rod (7) and located inside the housing (1). The inner wall of the movable ring (12) is provided with an internal thread (14). The internal thread (14) and the external thread (9) mesh with each other. The fixed cover (2) is detachably installed on the front side of the housing (1) by bolts. A screw hole (18) is provided through the center of the front end of the fixed cover (2). An external threaded tube (4) is screwed into the screw hole (18). An adjusting ring (15) is movably connected to the inner end of the external threaded tube (4). The adjusting ring (15) can be sleeved on the transmission rod (7). Limit switches (17) are installed on the upper and lower sides of the inner wall of the adjusting ring (15).

2. The limit protection device for a high-strength ultimate torque transmission arm according to claim 1, characterized in that, The housing (1) is symmetrically fixedly installed with limiting guide rails (10) inside and on both sides of the transmission rod (7), and the two sets of limiting guide rails (10) are symmetrically provided with limiting grooves (11) on their inner sides.

3. A limit protection device for a high-strength ultimate torque transmission arm according to claim 2, characterized in that, The movable ring (12) has a first limiting slider (13) integrally formed on both the upper and lower sides, and the adjusting ring (15) has a second limiting slider (16) integrally formed on both the upper and lower sides. The first limiting slider (13) and the second limiting slider (16) are both slidably installed in the limiting groove (11).

4. A limit protection device for a high-strength ultimate torque transmission arm according to claim 1, characterized in that, The adjusting ring (15) has an annular limiting groove (19) on the side near the external threaded pipe (4), and the external threaded pipe (4) has an annular limiting block (20) on the side near the adjusting ring (15). The annular limiting block (20) can be rotatably installed in the annular limiting groove (19).

5. A limit protection device for a high-strength ultimate torque transmission arm according to claim 1, characterized in that, The transmission rod (7) has a connecting seat (8) at its end and located outside the housing (1) for fixed connection with the transmission arm shaft.

6. A limit protection device for a high-strength ultimate torque transmission arm according to claim 1, characterized in that, The outer wall of the housing (1) is integrally formed with mounting bases (3) at the four corners, and each set of mounting bases (3) has a through mounting hole.

7. A limit protection device for a high-strength ultimate torque transmission arm according to claim 1, characterized in that, A handwheel (5) is fixedly installed at the front end of the external threaded pipe (4) and outside the fixed cover (2).

8. A limit protection device for a high-strength ultimate torque transmission arm according to claim 1, characterized in that, The external threaded tube (4) has a hollow structure inside, and the inner diameter of the external threaded tube (4) is larger than the outer diameter of the transmission rod (7).

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