Agricultural machinery transmission shaft with protective device

Abstract

The utility model belongs to the technical field of mechanical components, and particularly discloses an agricultural mechanical transmission shaft with a protective device, which comprises a transmission shaft main body, a first protective tube and a second protective tube, the first protective tube and the second protective tube are sleeved on the outer side of the transmission shaft main body, and a first connector and a second connector are arranged on opposite surfaces of the first protective tube and the second protective tube. A first screw hole and a groove are formed in the outer side wall of the first connector, a second screw hole is formed in the outer side wall of the second connector, a plurality of first limiting strips are evenly arranged on the outer side of the first protection pipe, and a plurality of second limiting sleeves are evenly arranged on the outer side of the second protection pipe. A first limiting strip and a second limiting strip are arranged on the first protection pipe and the second protection pipe and matched with a first limiting groove and a second limiting groove in the first pipe sleeve and the second pipe sleeve, the limiting effect is achieved, the first protection pipe and the second protection pipe are fixed to the first protection pipe and the second protection pipe through bolts, and therefore the first pipe sleeve and the second pipe sleeve are limited; and the displacement phenomenon of the first pipe sleeve and the second pipe sleeve is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical components, in particular to an agricultural machinery transmission shaft with a protection device. Background Technique

[0002] There are various agricultural machinery. The transmission shaft is a rotating body with high speed and few supports in agricultural machinery. Therefore, its dynamic balance is crucial. Generally, the transmission shaft has to undergo a dynamic balance test before leaving the factory and is adjusted on a balancing machine.

[0003] In the technical field of the safety protection of the transmission shaft, the protection tube is a very important safety device, especially in the field of agricultural machinery. Therefore, some people have designed a protection device for the transmission shaft of agricultural machinery. For example, the Chinese utility model patent with the publication number of CN214534371U specifically discloses a protection mechanism for the transmission shaft of agricultural machinery.

[0004] However, people will find in the actual use process of the above protection structure that the sleeve used in the device is directly sleeved on the connecting pipe. Since the sleeve is not restricted, the stability of the connecting pipe is very poor during the actual working process, and it is easy to have displacement, increasing the wear between the sleeve and the connecting pipe. Content of the Utility Model

[0005] The purpose of the utility model is to provide an agricultural machinery transmission shaft with a protection device to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an agricultural machinery transmission shaft with a protection device, including a transmission shaft main body and a first protection tube and a second protection tube sleeved outside the transmission shaft main body. The opposite surfaces of the first protection tube and the second protection tube are provided with a first connection head and a second connection head. The outer side wall of the first connection head is provided with a first screw hole and a groove, and the outer side wall of the second connection head is provided with a second screw hole. A plurality of first screw holes and second screw holes are provided. A plurality of first limiting strips are evenly arranged on the outer side of the first protection tube, and a plurality of second limiting sleeves are evenly arranged on the outer side of the second protection tube.

[0007] A first tube sleeve is sleeved outside the first protection tube, and a second tube sleeve is sleeved outside the second protection tube. The end of the first tube sleeve is provided with a first connection sleeve sleeved on the first connection head, and the end of the second tube sleeve is provided with a second connection sleeve sleeved on the second connection head. First positioning grooves and second positioning holes are respectively opened on the first connection sleeve and the second connection sleeve. The first positioning hole and the second positioning hole are respectively aligned with the first screw hole and the second screw hole and fixed by bolts. First limiting grooves and second limiting grooves are respectively opened on the inner walls of the first tube sleeve and the second tube sleeve. The first limiting groove is fitted on the first limiting strip, and the second limiting groove is fitted on the second limiting strip.

[0008] By fitting the first limiting groove and the second limiting groove onto the first limiting strip and the second limiting strip, and using bolts to fix the first sleeve and the second sleeve onto the first protective tube and the second protective tube, displacement of the sleeve on the protective tube is avoided.

[0009] Preferably, on the opposite sides of the first protective tube and the second protective tube, there are respectively provided a first flange and a second flange, which are used to fix the device on both sides of the main transmission shaft.

[0010] Preferably, an oil injection port is provided in the groove, and a sealing plug is provided on the oil injection port. The provided oil injection port is used to inject lubricating oil to reduce the wear between the first protective tube, the second protective tube and the main transmission shaft.

[0011] Preferably, a connecting section is provided on the first connector, and the second connector is sleeved on the threaded section and is connected by threads, so as to facilitate the separation of the first connector and the second connector.

[0012] Preferably, a clamping head is provided at the end of the first connecting sleeve, and a clamping sleeve is provided at the end of the second connecting sleeve. The clamping sleeve is clamped on the clamping head to dock the first connecting sleeve and the second connecting sleeve.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By providing the first limiting strip and the second limiting strip on the first protective tube and the second protective tube, and matching them with the first limiting groove and the second limiting groove on the first sleeve and the second sleeve, a limiting effect is achieved, and they are fixed on the first protective tube and the second protective tube by bolts, so as to limit the first sleeve and the second sleeve, avoid the phenomenon of displacement of the first sleeve and the second sleeve, and improve the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a structural schematic diagram of the present utility model with the first sleeve and the second sleeve removed;

[0017] Figure 3 is a structural schematic diagram of the separation of the first protective tube and the second protective tube of the present utility model;

[0018] Figure 4 is a structural schematic diagram of the first sleeve of the present utility model;

[0019] Figure 5 is a structural schematic diagram of the second sleeve of the present utility model.

[0020] In the figure: 1. Transmission shaft main body; 2. First protective tube; 201. First connector; 2011. First screw hole; 2012. Groove; 2013. Oil filling port; 202. Connection section; 203. First limiting strip; 204. First flange; 3. Second protective tube; 301. Second connector; 3011. Second screw hole; 303. Second limiting strip; 304. Second flange; 4. First pipe sleeve; 401. First connecting sleeve; 4011. First positioning hole; 402. Chuck; 403. First limiting groove; 5. Second pipe sleeve; 501. Second connecting sleeve; 5011. Second positioning hole; 502. Casing; 503. Second limiting groove; 6. Sealing plug. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0023] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] Please refer to Figures 1-5, the present utility model provides a technical solution: an agricultural machinery transmission shaft with a protection device, including a transmission shaft main body 1 and a first protection tube 2 and a second protection tube 3 sleeved outside the transmission shaft main body 1. A first connector 201 and a second connector 301 are arranged on the opposite surfaces of the first protection tube 2 and the second protection tube 3. A first screw hole 2011 and a groove 2012 are formed on the outer side wall of the first connector 201, and a second screw hole 3011 is formed on the outer side wall of the second connector 301. A plurality of first screw holes 2011 and second screw holes 3011 are provided. A plurality of first limiting strips 203 are evenly arranged on the outer side of the first protection tube 2, and a plurality of second limiting sleeves are evenly arranged on the outer side of the second protection tube 3.

[0025] Furthermore, a first tube sleeve 4 is sleeved outside the first protection tube 2, and a second tube sleeve 5 is sleeved outside the second protection tube 3. A first connecting sleeve 401 sleeving on the first connector 201 is arranged at the end of the first tube sleeve 4, and a second connecting sleeve 501 sleeving on the second connector 301 is arranged at the end of the second tube sleeve 5. A first positioning groove and a second positioning hole 5011 are respectively formed on the first connecting sleeve 401 and the second connecting sleeve 501. The first positioning hole 4011 and the second positioning hole 5011 are respectively aligned with the first screw hole 2011 and the second screw hole 3011 and fixed by bolts. First limiting grooves 403 and second limiting grooves 503 are respectively formed on the inner walls of the first tube sleeve 4 and the second tube sleeve 5. The first limiting groove 403 is fitted on the first limiting strip 203, and the second limiting groove 503 is fitted on the second limiting strip 303.

[0026] By fitting the first limiting groove 403 and the second limiting groove 503 on the first limiting strip 203 and the second limiting strip 303, and using bolts to fix the first tube sleeve 4 and the second tube sleeve 5 on the first protection tube 2 and the second protection tube 3, the displacement of the tube sleeve on the protection tube is avoided.

[0027] Furthermore, first flanges 204 and second flanges 304 are respectively arranged on the opposite surfaces of the first protection tube 2 and the second protection tube 3. The arranged first flanges 204 and second flanges 304 are used to fix the device on both sides of the transmission shaft main body 1.

[0028] Furthermore, an oil injection port 2013 is formed in the groove 2012, and a sealing plug 6 is arranged on the oil injection port 2013. The arranged oil injection port 2013 is used to inject lubricating oil to reduce the wear between the first protection tube 2, the second protection tube 3 and the transmission shaft main body 1.

[0029] Furthermore, a connecting section 202 is arranged on the first connector 201, and the second connector 301 is sleeved on the threaded section and connected by threads, so as to facilitate the separation of the first connector 201 and the second connector 301.

[0030] Further, a chuck 402 is provided at the end of the first connecting sleeve 401, and a socket 502 is provided at the end of the second connecting sleeve 501. The socket 502 is clamped on the chuck 402 to dock the first connecting sleeve 401 and the second connecting sleeve 501.

[0031] In summary, when the device is in use, the main drive shaft 1 passes through the first protective tube 2 and the second protective tube 3, and is fixed on both sides of the main drive shaft 1 through the first flange 204 and the second flange 304. By rotating the first connecting head 201, the connecting section 202 is threadedly connected to the second connecting head 301, so that the first protective tube 2 and the second protective tube 3 are docked. The sealing plug 6 can be opened, and lubricating oil can be added through the oil filling port 2013 to reduce the friction between the main drive shaft 1 and the first protective tube 2 and the second protective tube 3. Through the first tube sleeve 4 sleeved on the outside of the first protective tube 2 and the second tube sleeve 5 sleeved on the outside of the second protective tube 3, the first tube sleeve 4 and the second tube sleeve 5 can be docked together by using the chuck 402 and the socket 502. The first limiting strip 203 is fitted into the first limiting groove 403 to limit the first tube sleeve 4, and the second limiting strip 303 is fitted into the second limiting groove 503 to limit the second tube sleeve 5. Finally, the first tube sleeve 4 is fixed by passing a bolt through the first positioning hole 4011 and screwing it into the first screw hole 2011, and the second tube sleeve 5 is fixed by passing a bolt through the second positioning hole 5011 and screwing it into the second screw hole 3011, and then the device can be used normally with good protection effect.

[0032] It should be noted that the entire device is controlled by a total control button. Since the devices matched with the control button are common devices and belong to the existing mature technology, the electrical connection relationship and the specific circuit structure are not described in detail here.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An agricultural machinery transmission shaft with a protective device, characterized in that: It includes a drive shaft main body (1), a first protective tube (2) and a second protective tube (3) sleeved outside the drive shaft main body (1). On the opposite surfaces of the first protective tube (2) and the second protective tube (3), there are a first connector (201) and a second connector (301). On the outer side wall of the first connector (201), there are a first screw hole (2011) and a groove (2012). On the outer side wall of the second connector (301), there is a second screw hole (3011). There are several first screw holes (2011) and second screw holes (3011). On the outer side of the first protective tube (2), several first limiting strips (203) are evenly arranged. On the outer side of the second protective tube (3), several second limiting sleeves are evenly arranged; A first tube sleeve (4) is sleeved outside the first protective tube (2), and a second tube sleeve (5) is sleeved outside the second protective tube (3). At the end of the first tube sleeve (4), there is a first connecting sleeve (401) sleeved on the first connector (201). At the end of the second tube sleeve (5), there is a second connecting sleeve (501) sleeved on the second connector (301). On the first connecting sleeve (401) and the second connecting sleeve (501), there are a first positioning groove and a second positioning hole (5011) respectively. The first positioning hole (4011) and the second positioning hole (5011) are respectively aligned with the first screw hole (2011) and the second screw hole (3011) and fixed by bolts. And on the inner walls of the first tube sleeve (4) and the second tube sleeve (5), there are a first limiting groove (403) and a second limiting groove (503) respectively. The first limiting groove (403) is fitted on the first limiting strip (203), and the second limiting groove (503) is fitted on the second limiting strip (303).

2. The agricultural machinery transmission shaft with a protection device according to claim 1, characterized in that: On the opposite surfaces of the first protective tube (2) and the second protective tube (3), there are a first flange (204) and a second flange (304) respectively.

3. The agricultural machinery transmission shaft with a protection device according to claim 1, wherein: An oil injection port (2013) is opened in the groove (2012), and a sealing plug (6) is arranged on the oil injection port (2013).

4. A drive shaft of an agricultural machine with a protection device according to claim 1, characterized in that: A connecting section (202) is arranged on the first connector (201), and the second connector (301) is sleeved on the threaded section and connected by threads.

5. The agricultural machinery transmission shaft with a protection device according to claim 1, characterized in that: A clamping head (402) is arranged at the end of the first connecting sleeve (401), and a clamping sleeve (502) is arranged at the end of the second connecting sleeve (501). The clamping sleeve (502) is clamped on the clamping head (402).

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