Splicing structure for preventing tow bar screw from loosening and slipping

Abstract

The utility model discloses a splicing structure for preventing a tow bar screw from loosening and slipping, which comprises a tow bar main body and a lower shaft, a raised head is positioned at the head of the tow bar main body, a groove is integrally formed in the inner wall of the lower shaft, and the raised head at the front end of the tow bar main body is inserted into the groove in the lower shaft for positioning. The position, between the protruding head and the groove, of the supporting rod body and the lower shaft is of a concave-convex joggling structure, a reinforcing rib is integrally formed on the outer surface of the protruding head, a joggling piece is integrally formed on the outer wall of the protruding head, a positioning head is positioned at the bottom of the protruding head, a joggling groove is integrally formed in the inner wall of the groove, and a positioning hole is formed in the outer wall of the lower shaft. A screw groove is formed in the inner wall of the supporting rod body, and a stud is positioned at the rear end of the protruding head. According to the splicing structure capable of preventing the tow bar screw from loosening and slipping, a joggle joint mode is adopted, the phenomenon that a pot rotates and slips due to loosening of the tow bar screw is prevented, and safety accidents are reduced.

Description

Technical Field

[0001] The utility model relates to the field of single crystal furnaces, in particular to a splicing structure for preventing a drag rod screw from loosening and slipping. Background Art

[0002] The splicing structure for preventing the tow rod screws from loosening and slipping is a structure for connecting the tow rod and the lower shaft. The connection method of the bottom of the tow rod is connected to the lower shaft by the support rod screws. With the continuous development of science and technology, people have higher and higher requirements on the manufacturing process of the splicing structure for preventing the tow rod screws from loosening and slipping.

[0003] The existing connection between the support rod and the lower shaft has certain disadvantages when in use. Since the contact surface between the support rod and the lower shaft is a conical smooth surface, when only one support rod screw is used to fix it, it is inevitable that the screws will loosen due to improper furnace loading operation or the screws will loosen after a long period of operation during actual operation, causing the crucible to slip and be forced to stew the furnace, resulting in unnecessary losses, which has brought certain adverse effects to the actual use process. For this reason, we propose a splicing structure that prevents the drag rod screws from loosening and slipping. Utility Model Content

[0004] Technical problem solved: In view of the deficiencies in the prior art, the utility model provides a splicing structure for preventing the tow rod screws from loosening and slipping. It adopts a mortise and tenon joint method to prevent the pot from slipping due to loosening of the tow rod screws, thereby reducing the occurrence of safety accidents and effectively solving the problems in the background technology.

[0005] Technical solution: To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a splicing structure to prevent the screws of the tow rod from loosening and slipping, including a support rod body and a lower shaft, the head of the support rod body is positioned with a convex head, the inner wall of the lower shaft is integrally formed with a groove, the convex head at the front end of the support rod body is inserted into the groove inside the lower shaft for positioning, and the position of the support rod body and the lower shaft between the convex head and the groove is a concave-convex mortise and tenon structure.

[0006] Preferably, the outer surface of the protrusion is integrally formed with reinforcing ribs, the outer wall of the protrusion is integrally formed with a mortise and tenon piece, the bottom of the protrusion is positioned with a positioning head, the inner wall of the groove is integrally formed with a mortise and tenon groove, and the outer wall of the lower shaft is provided with a positioning hole.

[0007] Preferably, a screw groove is formed on the inner wall of the support rod body, a stud is positioned at the rear end of the protruding head, an internal thread is formed on the inner wall of the screw groove, and an external thread is formed on the outer wall of the stud.

[0008] Preferably, the convex head and the concave groove are positioned by mortise and tenon joints between a mortise and tenon groove, and the mortise and tenon groove fit together.

[0009] Preferably, the convex head and the support rod body are detachably connected via a screw groove, a stud, an internal thread and an external thread.

[0010] Preferably, the support rod body and the lower shaft are positioned by a straight-insertion mortise and tenon joint, and when the lower shaft rotates, the support rod body is driven to rotate through the mortise and tenon joint structure.

[0011] Beneficial effects: Compared with the prior art, the utility model provides a splicing structure for preventing the screws of the tow rod from loosening and slipping, which has the following beneficial effects: the splicing structure for preventing the screws of the tow rod from loosening and slipping adopts a mortise and tenon joint method to prevent the pot from slipping due to the loosening of the screws of the tow rod, thereby reducing the occurrence of safety accidents; by designing the contact surface between the lower shaft and the support rod to be a concave-convex mortise and tenon joint method, the support rod is driven to rotate through the mortise and tenon joint method when the lower shaft rotates, thereby preventing irreparable losses caused by the loosening or breaking of the screws of the support rod; the support rod can be changed to a non-hollow state, thereby reducing material processing costs; the entire splicing structure for preventing the screws of the tow rod from loosening and slipping is simple in structure, easy to operate, and has better effect than the traditional method. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the overall structure of a splicing structure for preventing the screws of a tow bar from loosening and slipping.

[0013] Figure 2 The utility model is a structural schematic diagram of a supporting rod main body in a splicing structure for preventing the screws of a tow rod from loosening and slipping.

[0014] Figure 3 The utility model is a structural schematic diagram of a lower shaft in a splicing structure for preventing the screws of a tow bar from loosening and slipping.

[0015] Figure 4 The utility model is a schematic structural diagram of a disassembled support rod body in a splicing structure for preventing the screws of a tow rod from loosening and slipping.

[0016] In the figure: 1. support rod body; 2. lower shaft; 3. groove; 4. protrusion; 5. reinforcing rib; 6. mortise and tenon; 7. positioning head; 8. mortise and tenon groove; 9. positioning hole; 10. internal thread; 11. stud; 12. external thread; 13. screw groove. DETAILED DESCRIPTION

[0017] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but those skilled in the art will understand that the embodiments described below are part of the embodiments of the utility model, rather than all of the embodiments, and are only used to illustrate the utility model, and should not be considered as limiting the scope of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1-4 As shown, a splicing structure for preventing the screws of a tow rod from loosening and slipping includes a supporting rod body 1 and a lower shaft 2. The head of the supporting rod body 1 is positioned with a convex head 4, and the inner wall of the lower shaft 2 is integrally formed with a groove 3. The convex head 4 at the front end of the supporting rod body 1 is inserted into the groove 3 inside the lower shaft 2 for positioning. The position of the supporting rod body 1 and the lower shaft 2 between the convex head 4 and the groove 3 is a concave-convex tenon structure, and the tenon joint method is adopted to prevent the pot from slipping due to the loosening of the tow rod screws, thereby reducing the occurrence of safety accidents.

[0021] Furthermore, the outer surface of the protrusion 4 is integrally formed with a reinforcing rib 5, the outer wall of the protrusion 4 is integrally formed with a mortise and tenon piece 6, the bottom of the protrusion 4 is positioned with a positioning head 7, the inner wall of the groove 3 is integrally formed with a mortise and tenon groove 8, and the outer wall of the lower shaft 2 is provided with a positioning hole 9.

[0022] Furthermore, a screw groove 13 is formed on the inner wall of the support rod body 1 , a stud 11 is positioned at the rear end of the protruding head 4 , an internal thread 10 is formed on the inner wall of the screw groove 13 , and an external thread 12 is formed on the outer wall of the stud 11 .

[0023] Furthermore, the protrusion 4 and the groove 3 are positioned by the mortise and tenon joint 6 and the mortise groove 8, and the mortise and tenon joint 6 and the mortise groove 8 are matched with each other.

[0024] Furthermore, the boss 4 and the support rod body 1 are detachably connected via the screw groove 13 , the stud 11 , the internal thread 10 and the external thread 12 .

[0025] Furthermore, the support rod body 1 and the lower shaft 2 are positioned by direct insertion and mortise and tenon joint, and when the lower shaft 2 rotates, the support rod body 1 is driven to rotate through the mortise and tenon joint structure.

[0026] Working principle: The utility model includes a support rod body 1, a lower shaft 2, a groove 3, a convex head 4, a reinforcing rib 5, a mortise and tenon joint 6, a positioning head 7, a mortise and tenon groove 8, a positioning hole 9, an internal thread 10, a stud 11, an external thread 12 and a screw groove 13, and adopts a mortise and tenon joint method to prevent the pot from slipping due to loosening of the tow rod screws, thereby reducing the occurrence of safety accidents.

[0027] By designing the contact surface between the lower shaft and the support rod to be a concave-convex mortise and tenon joint, the support rod is driven to rotate through the mortise and tenon joint when the lower shaft rotates, preventing irreparable losses caused by loosening or breaking of the support rod screws. The support rod can be changed to a non-hollow state, thereby reducing material processing costs.

[0028] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A splicing structure for preventing a tow bar screw from loosening and slipping, comprising a tow bar body (1) and a lower shaft (2), characterized in that: The head of the support rod body (1) is positioned with a convex head (4), and the inner wall of the lower shaft (2) is integrally formed with a groove (3). The convex head (4) at the front end of the support rod body (1) is inserted into the groove (3) inside the lower shaft (2) for positioning. The support rod body (1) and the lower shaft (2) are in a concave-convex mortise and tenon joint structure at a position between the convex head (4) and the groove (3).

2. A splicing structure for preventing the tow rod screws from loosening and slipping according to claim 1, characterized in that: The outer surface of the protrusion (4) is integrally formed with a reinforcing rib (5), the outer wall of the protrusion (4) is integrally formed with a tenon joint (6), the bottom of the protrusion (4) is positioned with a positioning head (7), the inner wall of the groove (3) is integrally formed with a tenon joint groove (8), and the outer wall of the lower shaft (2) is provided with a positioning hole (9).

3. The splicing structure for preventing the tow rod screws from loosening and slipping according to claim 1, characterized in that: The inner wall of the support rod body (1) is provided with a screw groove (13), the rear end of the protruding head (4) is positioned with a stud (11), the inner wall of the screw groove (13) is provided with an internal thread (10), and the outer wall of the stud (11) is provided with an external thread (12).

4. The splicing structure for preventing the tow rod screws from loosening and slipping according to claim 2, characterized in that: The convex head (4) and the concave groove (3) are positioned by mortise and tenon joints (6) and mortise grooves (8), and the mortise and tenon joints (6) and mortise grooves (8) are matched with each other.

5. The splicing structure for preventing the tow bar screws from loosening and slipping according to claim 3, characterized in that: The convex head (4) and the supporting rod body (1) are detachably connected via a screw groove (13), a stud (11), an internal thread (10) and an external thread (12).

6. The splicing structure for preventing the tow bar screws from loosening and slipping according to claim 1, characterized in that: The support rod body (1) and the lower shaft (2) are positioned by direct insertion and mortise and tenon jointing, and when the lower shaft (2) rotates, the support rod body (1) is driven to rotate through the mortise and tenon joint structure.

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