Anti-overloading transmission rod

Abstract

The utility model provides an anti-overload transmission rod, and belongs to the technical field of mechanical design. A first joint bearing of the anti-overload transmission rod is embedded in a bearing chamber of a connector A, a second joint bearing is embedded in a bearing chamber of a connector B, and the connector A is connected with a rod body; the spring support A and the spring support B are clamped at the two ends of the compression spring and penetrate through the transmission shaft; one end of the spring support A is contacted with the compression spring, and the other end is contacted with the shaft sleeve; one end of the spring support B is contacted with the compression spring, and the other end is contacted with the rod body; the other end of the shaft sleeve contacts with the joint A; one end of the limiting sleeve is in contact with the spring support B, the other end of the limiting sleeve is fixedly connected with the transmission shaft, and the outer surface of the limiting sleeve is in contact with the rod body and can slide relative to the rod body; the transmission shaft is in contact with the inner wall of the rod body through a shaft shoulder cylindrical surface, can slide relatively and is connected with a joint B; and the transmission rod and the anti-overload function are integrated, so that the reliability and the convenience are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical design, and in particular relates to an anti-overload transmission rod. Background Art

[0002] At present, transmission rods are used to transmit mechanical displacement instructions. In the transmission system, transmission rods are mostly hard-connected, and the main form is a pull rod, which consists of two end joints and a rod body. The two end joints are connected to the rod body through riveting, threaded connection, etc. The two ends of the pull rod are connected to the input and output ends of the transmission system. Multiple pull rods can be set between the input / output ends to realize long-distance instruction transmission of the transmission system.

[0003] When the output end of the transmission system gets stuck, the load on the output end is far greater than the maximum load that the transmission system can withstand. When the input end provides driving force to the transmission system, the transmission rod will partially break. To prevent overload from damaging the transmission system's functions, an overload protection mechanism is added to the transmission system. Common overload protection mechanisms are formed by adding a clutch or release mechanism at the end of the transmission system. When the system is overloaded, the clutch or release mechanism disconnects the transmission rod system from the end. When the end gets stuck, the front transmission rod system is disconnected, and the input end will not provide a large driving force that will damage the transmission system.

[0004] The existing overload protection mechanism and transmission rod each independently perform their respective functions. Moreover, when the overload protection mechanism is overloaded, the end load is disconnected, and the transmission rod needs to be repaired before the next use, which causes inconvenience. Utility Model Content

[0005] In order to solve the overload prevention problem of the transmission system and the reliability and convenience problems of the transmission system, the utility model provides an overload-proof transmission rod, which integrates the functions of the transmission rod and overload prevention into one, thereby improving reliability and convenience. The technical solution is as follows:

[0006] An anti-overload transmission rod comprises: a first joint bearing, a joint A, a shaft sleeve, a spring support A, a compression spring, a rod body, a spring support B, a limiting sleeve, a transmission shaft, a joint B, and a second joint bearing;

[0007] Among them, the first joint bearing is embedded in the bearing chamber of joint A, the second joint bearing is embedded in the bearing chamber of joint B, and joint A is connected to the rod body; the spring support A and spring support B are clamped at both ends of the compression spring and passed through the transmission shaft; one end of the spring support A contacts the compression spring, and the other end contacts the sleeve; one end of the spring support B contacts the compression spring, and the other end contacts the rod body; the other end of the sleeve contacts the joint A; the limit sleeve is passed through the transmission shaft, and one end contacts the spring support B, and the other end is fixed to the transmission shaft, the outer surface contacts the rod body, and can slide relative to the rod body; the transmission shaft contacts the inner wall of the rod through the cylindrical surface of the shaft shoulder, can slide relative to each other, and is connected to the joint B.

[0008] The installation load of the compression spring must be designed to be greater than the end load.

[0009] The first joint bearing is connected to the input end, and the second joint bearing is connected to the output end.

[0010] Optionally, the connector A is connected to the internal threaded end of the rod body via threads.

[0011] Optionally, the other end of the limiting sleeve is fixedly connected to the transmission shaft through a rivet.

[0012] Optionally, the transmission shaft is threadedly connected to the joint B.

[0013] Compared to existing anti-jamming mechanisms such as transmission rods, clutches, and release mechanisms, this utility model integrates both a transmission rod and an anti-jamming function. During normal use of the transmission rod system, since the spring's installation load is designed to be greater than the end load, the transmission rod acts as a pull rod, enabling the input end to push and pull the output end. When the output end becomes stuck, firstly, the input end pushes connector A, transmitting force to spring support A via the shaft sleeve. Spring support B, due to the end jam, is stationary. At this time, spring support A compresses the compression spring, ensuring output from the input end and implementing an anti-overload design during pushing. Secondly, the input end pulls connector A, the rod body, and spring support B. Spring support A, due to the end jam, is stationary. Spring support B compresses the compression spring, ensuring output from the input end and implementing an anti-overload design during pulling. After the jam disappears, the compression spring resets, and the transmission rod system returns to normal. This design implements an anti-overload design for the transmission rod system, improving the maintainability, safety, and reliability of the transmission rod system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the anti-overload transmission rod structure of the utility model;

[0015] Figure 2 Schematic diagram of the structure of connector A;

[0016] Figure 3 It is a structural diagram of spring support A and spring support B;

[0017] Figure 4 Schematic diagram of the rod structure;

[0018] Figure 5 Schematic diagram of the limit sleeve structure;

[0019] Figure 6 Schematic diagram of the transmission shaft structure;

[0020] Figure 7 Schematic diagram of the structure of connector B.

[0021] In the figure: 1-first joint bearing, 2-joint A, 3-sleeve, 4-spring support A, 5-compression spring, 6-rod body, 7-spring support B, 8-limiting sleeve, 9-rivet, 10-drive shaft, 11-joint B, 12-second joint bearing. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, combined with the flowchart of the method of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The present invention provides an anti-overload transmission rod. Figure 1 As shown, it includes: a first joint bearing 1, a joint A2, a sleeve 3, a spring support A4, a compression spring 5, a rod body 6, a spring support B7, a limit sleeve 8, a rivet 9, a transmission shaft 10, a joint B11, and a second joint bearing 12.

[0024] The first joint bearing 1 is embedded in the bearing chamber of the joint A2, and the second joint bearing 12 is embedded in the bearing chamber of the joint B11; the first joint bearing 1 is connected to the input end, and the second joint bearing 12 is connected to the output end; the structure of the joint A2 is as follows Figure 2 As shown; the structure of connector B is as follows Figure 7 As shown;

[0025] The connector A2 is connected to the internal thread end of the rod body 6 through a thread; the rod body structure is as follows Figure 4 As shown;

[0026] Spring support A4 and spring support B7 are clamped at both ends of the compression spring 5 and passed through the transmission shaft 10; the structure of spring support A and spring support B is as follows: Figure 3 As shown;

[0027] One end of the spring support A4 contacts the compression spring 5, and the other end contacts the sleeve 3;

[0028] One end of the spring support B7 contacts the compression spring 5, and the other end contacts the rod 6;

[0029] The other end of the sleeve 3 contacts the joint A2.

[0030] The limiting sleeve 8 is worn on the transmission shaft 10, one end of which contacts the spring support B7, and the other end is fixed to the transmission shaft 10 through the rivet 9. The outer surface contacts the rod body 6 and can slide relative to the rod body 6; the limiting sleeve structure is as follows Figure 5 As shown;

[0031] The transmission shaft 10 contacts the inner wall of the rod body 6 through the cylindrical surface of the shaft shoulder, can slide relative to it, and is threadedly connected to the joint B11. Figure 6 As shown;

[0032] In the present invention, connectors A2 and B11 are used to connect the transmission rod system, with connector A2 connecting the input end and connector B11 connecting the output end. Connectors A2, B11, rod body 6, and transmission shaft 10 constitute the transmission rod for force transmission. Spring supports A4 and B7 support the compression spring 5 and achieve spring compression by contacting the end faces of the rod body 6 and transmission shaft 10. Bushing 3 transmits the force signal of the rod body 6 to the compression spring 5. Bushing 8 transmits the force signal of the transmission shaft 10 to the compression spring 5. Rivet 9 connects bushing 8 to the transmission shaft 10. Of course, other connection methods can also be used, and this embodiment does not limit this. The compression spring 5 transmits the force signal of the rod body 6 to the transmission shaft 10. At the same time, when the transmission rod system is overloaded, the travel of the transmission rod system is eliminated. In addition, the installation load design of the compression spring must be greater than the end load.

[0033] The input / output ends of the transmission rod are connected to the joint bearing through bolts. When the transmission rod system is used normally, when the input end needs to push the output end, the input end pushes the joint A2, one end of the sleeve 3 contacts the end face of the joint A2, and the other end contacts the end face of the spring support A4. The joint A2 will push the spring support A4 through the sleeve 3. The installation load of the compression spring 5 is designed to be greater than the end load, and the compression spring 5 will not be compressed. The compression spring 5 pushes the limit sleeve 8 to move, and the limit sleeve 8 is fixedly connected to the transmission shaft 10, so the limit sleeve 8 pushes the transmission shaft 10, and finally pushes the output end, thereby realizing the input end pushing the output end; when the input end needs to pull the output end, similarly, the input end pulls the joint A2, the joint A2 pulls the rod body 6, and the rod body 6 drives the spring support B7. The installation load of the compression spring 5 is designed to be greater than the end load, and the compression spring 5 will not be compressed. The compression spring 5 pushes the spring support A4, and the spring support A4 pulls the transmission shaft 10 to move, and finally pulls the output end through the joint B11, thereby realizing the input end pulling the output end. When the output end is stuck, the input end pushes the connector A2. When the input end force is transmitted to the compression spring 5 through the shaft sleeve 3 and the spring support A4, the end is stuck and is at rest. The transmission shaft 10 is stationary and the movement of the spring support B7 is limited by the limit sleeve 8. When the input end force is greater than the installation load of the compression spring 5, the compression spring 5 will be compressed. At this time, the transmission rod system can be transmitted normally, and the transmitted mechanical displacement is eliminated by the spring compression; the input end pulls the connector A2. When the input end force is transmitted to the compression spring 5 through the rod body 6 and the spring support B7, due to the end sticking, it is at rest. The transmission shaft 10 is stationary and the movement of the spring support A4 is limited by the shaft shoulder end face. When the input end force is greater than the installation load of the compression spring 5, the compression spring 5 will be compressed. At this time, the transmission rod system can be transmitted normally, and the transmitted mechanical displacement is eliminated by the spring compression. The input signal at the input end of the transmission rod system is compressed and eliminated, realizing the anti-overload design of the transmission rod system.

[0034] In summary, the anti-overload transmission rod provided by this utility model integrates the functions of a transmission rod and overload protection, improving reliability and convenience. This transmission rod design uses a spring to prevent the transmission rod system from jamming. The transmission rod, composed of joints A and B, a rod body, and a transmission shaft, implements mechanical signal transmission within the rod system. This reduces the layout space of the transmission rod system and improves its safety, reliability, and ease of operation.

[0035] The above description is merely a detailed description of specific embodiments of the present invention. Any unspecified portions are conventional techniques. However, the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed in the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An anti-overload transmission rod, characterized in that: include: First spherical bearing, joint A, bushing, spring support A, compression spring, rod, spring support B, limit sleeve, transmission shaft, joint B, second spherical bearing; Among them, the first joint bearing is embedded in the bearing chamber of joint A, the second joint bearing is embedded in the bearing chamber of joint B, and joint A is connected to the rod body; the spring support A and spring support B are clamped at both ends of the compression spring and passed through the transmission shaft; one end of the spring support A contacts the compression spring, and the other end contacts the sleeve; one end of the spring support B contacts the compression spring, and the other end contacts the rod body; the other end of the sleeve contacts the joint A; the limit sleeve is passed through the transmission shaft, and one end contacts the spring support B, and the other end is fixed to the transmission shaft, the outer surface contacts the rod body, and can slide relative to the rod body; the transmission shaft contacts the inner wall of the rod through the cylindrical surface of the shaft shoulder, can slide relative to each other, and is connected to the joint B.

2. The anti-overload transmission rod according to claim 1, characterized in that: The installation load of the compression spring must be designed to be greater than the end load.

3. The anti-overload transmission rod according to claim 1, characterized in that: The first joint bearing is connected to the input end, and the second joint bearing is connected to the output end.

4. The overload-proof transmission rod according to claim 1, characterized in that: Connector A is connected to the internal thread end of the rod body through threads.

5. The overload-proof transmission rod according to claim 1, characterized in that: The other end of the limiting sleeve is fixedly connected to the transmission shaft through a rivet.

6. The overload-proof transmission rod according to claim 1, characterized in that: The transmission shaft is threadedly connected to joint B.

Images