Ball net rack node

Abstract

The utility model discloses a ball net rack node which comprises a ball node body, internal thread installation terminals, a net rack rod piece, a conical head arranged at the front end of the net rack rod piece and a high-strength screw rod, and the multiple internal thread installation terminals which are evenly arranged are fixedly installed on the outer wall of the ball node body. The front end of a conical head of the net rack rod piece is provided with a positioning sleeve capable of being matched with the end face of the internal thread installation terminal, the side wall of the positioning sleeve is in threaded connection with an anti-rotation pin, one side of the high-strength screw rod is provided with an axial sliding groove matched with the end of the anti-rotation pin, an annular protrusion is fixedly arranged on the front end face of the conical head, and the end face of the annular protrusion is provided with an axial sliding groove matched with the end of the anti-rotation pin. The outer wall of the internal thread installation terminal is slidably sleeved with a sheath which is in threaded connection with the annular projection. The utility model belongs to the technical field of net rack nodes, and the sheath is arranged at the joint of the internal thread mounting terminal of the ball node and the high-strength screw of the net rack rod piece, so that water vapor retention is avoided, the probability of rusting of threads is reduced, and the service life of a tennis rack is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of net rack nodes, in particular to a ball net rack node. BACKGROUND

[0002] At present, with the continuous application and development of space structures, steel net rack structures have become a representative roof structure form in today's society because of their reasonable stress, stable structure and novel shape.

[0003] The existing net rack structure is connected by a ball with an inner wire and a connecting rod with a fixed bolt at the end to form a bolt ball structure. For example, a kind of adjustable bolt ball net rack structure disclosed in Chinese patent 202020093634.7 includes a bolt ball and a connecting rod. A plurality of cylindrical threaded holes are formed on the surface of the bolt ball. A connecting bolt is arranged at one end of the connecting rod, and the connecting bolt is connected and fixed with the bolt ball. There is no rainproof, moisture-proof and dust-proof structure at the connection between the bolt and the ball to provide protection. In the south, the weather is often hot and rainy, humid and hot in spring and summer. Water vapor is easily retained at the connection between the fixed bolt and the ball, causing the connection between the fixed bolt and the ball to rust, resulting in loosening of the connection between the fixed bolt and the ball, thereby affecting the firmness of the connection between the net rack member and the ball node, and having certain safety risks. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the purpose of the present utility model is to provide a ball net rack node to solve the problem of rusting of the screw at the connection between the net rack member and the ball node.

[0005] To achieve the above-mentioned purpose, the present utility model provides a ball net rack node, which comprises a ball node, a net rack member, a taper head arranged at the front end of the net rack member and a high-strength screw rod. The ball node is a hollow steel ball structure. A plurality of uniformly arranged internal thread mounting terminals are fixedly installed on the outer wall of the ball node. The taper head of the net rack member is provided with a positioning sleeve which can adapt to the end face of the internal thread mounting terminal. The high-strength screw rod can pass through the positioning sleeve and the internal thread mounting terminal in front of the taper head and be threadedly connected. An anti-rotation pin is threadedly connected to the side wall of the positioning sleeve. An axial sliding groove is arranged on one side of the high-strength screw rod and adapted to the end of the anti-rotation pin. An annular protrusion is fixedly arranged on the front end face of the taper head. A protective sleeve is slidably arranged on the outer wall of the internal thread mounting terminal and threadedly connected with the annular protrusion.

[0006] As a preferred technical solution of the present utility model, a limiting protrusion is arranged on the outer wall of the internal thread mounting terminal, and a limiting step is arranged on the rear end of the inner wall of the protective sleeve and adapted to the limiting protrusion.

[0007] As a preferred technical scheme of the utility model, the annular protrusion is provided with external threads, and the front end of the inner wall of the sheath is provided with internal threads matched with the external threads on the annular protrusion.

[0008] As a preferred technical scheme of the utility model, the length of the sheath is greater than the length of the positioning sleeve, and the length of the sheath is less than the length of the internal thread mounting terminal.

[0009] As a preferred technical scheme of the utility model, the cross section of the positioning sleeve is hexagonal, a screw hole connected with the anti-rotation pin is formed in the outer wall of the positioning sleeve, and the end of the anti-rotation pin is provided with an internal hexagonal recess.

[0010] As a preferred technical scheme of the utility model, the maximum circumscribed circle diameter dimension of the outer contour of the positioning sleeve is less than the inner diameter dimension of the annular protrusion, and the positioning sleeve can be inserted into the inside of the annular protrusion and abut against the front end face of the taper head.

[0011] As a preferred technical scheme of the utility model, the rear end face of the internal thread mounting terminal is provided with an external thread connecting portion, the outer wall of the ball node is provided with a connecting hole threadedly connected with the external thread connecting portion, and the internal thread mounting terminal and the ball node are fixed by welding after being threadedly locked.

[0012] As a preferred technical scheme of the utility model, a rubber gasket is sleeved on the internal thread mounting terminal, and the rubber gasket is arranged between the limiting protruding edges of the sheath and the limiting protruding edges of the internal thread mounting terminal.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The ball net rack node of the utility model is connected by the sheath and the annular protrusion of the taper head around the external periphery of the internal thread mounting terminal, the sheath can surround the connecting position of the high-strength screw rod and the internal thread mounting terminal and surround the positioning sleeve, the outside of the positioning sleeve 7 forms a cavity, the external water vapor is not easy to enter the cavity, the water vapor is prevented from being retained at the connecting position of the internal thread mounting terminal and the high-strength screw rod, the probability of rusting of the screw is reduced, the firmness and reliability of the connection between the high-strength screw rod and the internal thread mounting terminal are effectively ensured, the service life of the tennis net rack node is ensured, and the safety of the tennis net rack node is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 is a structural schematic view of a ball net rack node of the utility model;

[0017] Figure 2 is a partial enlarged sectional view of the connection of the ball node and the net rack rod piece in the utility model;

[0018] Figure 3 is a structural enlarged schematic view of a high-strength screw rod in the utility model;

[0019] Figure 4 is a partial enlarged sectional view of the net rack rod piece in the utility model;

[0020] Figure 5 is a structural enlarged sectional view of the connection of the ball node and the internally threaded mounting terminal in the utility model;

[0021] Figure 6 is a structural enlarged sectional view of the internally threaded mounting terminal in the utility model;

[0022] Figure 7 is a structural enlarged sectional view of the sheath in the utility model.

[0023] The reference signs are as follows: 1, ball node; 2, net rack rod piece; 3, taper head; 4, high-strength screw rod; 5, anti-rotation pin; 6, internally threaded mounting terminal; 7, positioning sleeve; 8, axial sliding slot; 9, annular protrusion; 10, sheath; 11, limiting protruding edge; 12, limiting step; 13, externally threaded connecting portion; 14, connecting hole; 15, rubber gasket; 16, filling port. DETAILED DESCRIPTION

[0024] In order to make the above objectives, features and advantages of the present application more apparent, a detailed description of the specific embodiments of the present application will be given below with reference to the drawings. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below. The embodiments of the present application will be described below according to the overall structure of the utility model.

[0025] Reference Figures 1-7As shown, the embodiment provides a ball net rack node, which comprises a ball node 1, a net rack rod 2, a taper head 3 arranged at the front end of the net rack rod 2, and a high-strength screw rod 4. The taper head 3 is a hollow structure fixedly welded with the front end of the net rack rod 2. The ball node 1 is a hollow steel ball structure. A plurality of internally threaded mounting terminals 6 are fixedly arranged on the outer wall of the ball node 1. The internally threaded mounting terminal 6 is internally provided with a screw hole. The taper head 3 of the net rack rod 2 is provided with a positioning sleeve 7 capable of adapting to the end face of the internally threaded mounting terminal 6. The high-strength screw rod 4 can pass through the positioning sleeve 7 and be threadedly connected with the internally threaded mounting terminal 6 from the inner cavity of the taper head 3. The side wall of the positioning sleeve 7 is threadedly connected with an anti-rotation pin 5. One side of the high-strength screw rod 4 is provided with an axial sliding groove 8 adapted to the end of the anti-rotation pin 5. The front end face of the taper head 3 is fixedly provided with an annular protrusion 9. The outer wall of the internally threaded mounting terminal 6 is slidingly sleeved with a protective sleeve 10 threadedly connected with the annular protrusion 9.

[0026] The ball net rack node of the utility model, the ball node 1 is arranged as a hollow steel ball structure, reduces the weight of ball node 1, reduces the weight of whole ball net rack node, saves the material, reduces the cost;

[0027] The internally threaded mounting terminal 6 on the ball node 1 is connected with the high-strength screw rod 4 of the net rack rod 2, so that the net rack rod 2 and the ball node 1 are fixedly connected together. The internally threaded mounting terminal 6 and the ball node 1 are fixed by welding, and it is not necessary to arrange a long screw hole on the ball node 1 to mount the high-strength screw rod 4 as in the prior art, so that the arrangement of the long screw hole on the ball node 1 does not affect the overall rigidity of the ball node 1, and the ball node 1 is not deformed.

[0028] The utility model discloses a tennis rack node, still set up the protective sleeve 10 with the annular protrusion 9 of taper head 3 in the periphery of internally threaded mounting terminal 6, the protective sleeve 10 can surround the connecting place of high-strength screw rod 4 and internally threaded mounting terminal 6 and surround positioning sleeve 7, make the outside of positioning sleeve 7 form a compartment, the external moisture is not easy to enter this compartment, avoid the moisture to stay in the connecting place of internally threaded mounting terminal 6 and high-strength screw rod 4, reduce the probability of rust of screw, effectively guarantee the firm reliability of high-strength screw rod 4 and internally threaded mounting terminal 6 connection, guarantee the service life of tennis rack node, guarantee the security of tennis rack node.

[0029] As a preferred technical scheme of the utility model, the annular protrusion 9 is provided with external threads, the front end of the inner wall of the protective sleeve 10 is provided with internal threads adapted to the external threads on the annular protrusion 9, the outer wall of the internally threaded mounting terminal 6 is provided with a limiting protruding edge 11, and the rear end of the inner wall of the protective sleeve 10 is provided with a limiting step 12 adapted to the front end face of the limiting protruding edge 11. In the embodiment, after the protective sleeve 10 is threadedly connected with the annular protrusion 9, the limiting step 12 at the rear end of the protective sleeve 10 abuts against the limiting protruding edge 11 at the front end of the internally threaded mounting terminal 6, so that a gap is prevented, and external moisture is prevented from entering the protective sleeve 10.

[0030] As a preferred technical scheme of the utility model, the rubber gasket 15 is sleeved on the internally threaded mounting terminal 6, and the rubber gasket 15 is arranged between the limiting convex edge 11 of the sheath 10 and the limiting convex edge 11 of the internally threaded mounting terminal 6. The rubber gasket 15 can further prevent external water vapor from entering the sheath 10 and reduce the possibility of rusting of the screw.

[0031] As a preferred technical scheme of the utility model, the outer wall of the sheath 10 is provided with a filling opening 16, and after the sheath 10 is locked with the annular protrusion 9, hot melt adhesive or activated carbon particles can be injected into the sheath 10 from the filling opening 16, so that the sheath 10 has the functions of waterproofing and moisture-proofing.

[0032] As a preferred technical scheme of the utility model, the length of the sheath 10 is greater than the length of the positioning sleeve 7, and the length of the sheath 10 is less than the length of the internally threaded mounting terminal 6, so that the sheath 10 can completely wrap the positioning sleeve 7.

[0033] As a preferred technical scheme of the utility model, the cross section of the positioning sleeve 7 is hexagonal, that is, the positioning sleeve 7 is a hexagonal prism structure, the outer wall of the positioning sleeve 7 is provided with a screw hole connected with the anti-rotation pin 5, and the end of the anti-rotation pin 5 is provided with an internal hexagonal groove. In the embodiment, after the high-strength screw rod 4 passes through the taper head 3, the positioning sleeve 7 is sleeved on the high-strength screw rod 4, the anti-rotation pin 5 is inserted into the axial sliding groove 8 on one side of the high-strength screw rod 4 by rotating the anti-rotation pin 5, the high-strength screw rod 4 is limited, and relative rotation between the high-strength screw rod 4 and the positioning sleeve 7 is prevented; then the high-strength screw rod 4 is aligned with the screw hole of the internally threaded mounting terminal 6, the positioning sleeve 7 is clamped by using a wrench, and the positioning sleeve 7 is rotated by the wrench to drive the high-strength screw rod 4 to rotate, so that the high-strength screw rod 4 is screwed into the screw hole of the internally threaded mounting terminal 6.

[0034] As a preferred technical scheme of the utility model, the maximum circumscribed circle diameter dimension of the outer contour of the positioning sleeve 7 is less than the inner diameter dimension of the annular protrusion 9, and the positioning sleeve 7 can be inserted into the annular protrusion 9 and abut against the front end face of the taper head 3. The annular protrusion 9 can surround the connection between the positioning sleeve 7 and the taper head 3, and has the function of preventing water vapor from entering the inner cavity of the taper head 3 through the through hole at the front end of the taper head 3.

[0035] As a preferred technical scheme of the utility model, the rear end face of the internally threaded mounting terminal 6 is provided with an external thread connection part 13, the outer wall of the ball node 1 is provided with a connecting hole 14 threadedly connected with the external thread connection part 13, the connecting hole 14 is an internally threaded hole structure, and the internally threaded mounting terminal 6 is fixed by welding after being threadedly locked with the ball node 1. The internally threaded mounting terminal 6 is connected with the connecting hole 14 on the outer wall of the ball node 1 through the external thread connection part 13, the internally threaded mounting terminal 6 is preliminarily fixed, and then the internally threaded mounting terminal 6 is fixed on the outer wall of the ball node 1 by welding.

[0036] Working principle:

[0037] The sheath 10 is sleeved on the internally threaded terminal 6, then the externally threaded connecting part 13 of the internally threaded terminal 6 is connected with the connecting hole 14 on the outer wall of the ball node 1, the internally threaded terminal 6 is preliminarily fixed, then the internally threaded terminal 6 is firmly fixed on the outer wall of the ball node 1 by welding; then the high-strength screw rod 4 is inserted through the through hole at the front end of the conical head 3, then the positioning sleeve 7 is sleeved on the high-strength screw rod 4, the anti-rotation pin 5 is rotated to make the anti-rotation pin 5 inserted into the axial sliding groove 8 on one side of the high-strength screw rod 4, the high-strength screw rod 4 is limited, and relative rotation between the high-strength screw rod 4 and the positioning sleeve 7 is prevented; then the high-strength screw rod 4 is aligned with the screw hole of the internally threaded terminal 6, the positioning sleeve 7 is clamped by using a wrench, the positioning sleeve 7 is rotated by using the wrench, the high-strength screw rod 4 is rotated, the high-strength screw rod 4 is screwed into the screw hole of the internally threaded terminal 6, when the positioning sleeve 7 cannot be rotated, it is proved that the high-strength screw rod 4 is locked with the internally threaded terminal 6, and the internally threaded terminal 6, the positioning sleeve 7 and the conical head 3 cannot be loosened.

[0038] Then the sheath 10 is connected with the externally threaded connecting part of the annular protrusion 9 at the front end of the conical head 3, until the limiting step 12 is tightly contacted with the limiting protrusion 11, the connection between the high-strength screw rod 4 and the internally threaded terminal 6 and the positioning sleeve 7 are surrounded, an isolated cavity is formed outside the positioning sleeve 7, the water vapor outside is not easy to enter into the isolated cavity, the water vapor is prevented from staying at the connection between the internally threaded terminal 6 and the high-strength screw rod 4, the probability of rusting of the screw is reduced, the firmness and reliability of the connection between the high-strength screw rod 4 and the internally threaded terminal 6 are effectively ensured, the service life of the tennis rack node is ensured, and the safety of the tennis rack node is ensured.

[0039] The technical features of the above embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0040] The above embodiments only express one or several embodiments of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A net rack node, comprising a ball node (1), a net rack rod (2), a cone head (3) arranged at the front end of the net rack rod (2), and a high-strength screw rod (4), characterized in that, The ball node (1) is a hollow steel ball structure, a plurality of uniformly arranged internally threaded mounting terminals (6) are fixedly installed on the outer wall of the ball node (1), the taper head (3) of the space truss rod member (2) is provided with a positioning sleeve (7) which can be adapted to the end face of the internally threaded mounting terminal (6), the high-strength screw rod (4) can pass through the positioning sleeve (7) and be threadedly connected with the internally threaded mounting terminal (6) from the inner cavity of the taper head (3), the side wall of the positioning sleeve (7) is threadedly connected with an anti-rotation pin (5), one side of the high-strength screw rod (4) is provided with an axial sliding groove (8) which is adapted to the end of the anti-rotation pin (5), the front end face of the taper head (3) is fixedly provided with an annular protrusion (9), and the outer wall of the internally threaded mounting terminal (6) is slidably sleeved with a protective sleeve (10) which is threadedly connected with the annular protrusion (9).

2. A goal frame node according to claim 1, wherein, The outer wall of the internally threaded mounting terminal (6) is provided with a limiting protruding edge (11), and the rear end of the inner wall of the protective sleeve (10) is provided with a limiting step (12) which is adapted to the limiting protruding edge (11).

3. A goal frame node according to claim 2, wherein, The annular protrusion (9) is provided with external threads, and the front end of the inner wall of the protective sleeve (10) is provided with internal threads which are adapted to the external threads on the annular protrusion (9).

4. A node for a netting system according to claim 1 or 2 or 3, wherein The length of the protective sleeve (10) is greater than the length of the positioning sleeve (7), and the length of the protective sleeve (10) is less than the length of the internally threaded mounting terminal (6).

5. A goal frame node according to claim 4, wherein, The cross section of the positioning sleeve (7) is hexagonal, the outer wall of the positioning sleeve (7) is provided with a screw hole connected with the anti-rotation pin (5), and the end of the anti-rotation pin (5) is provided with an internal hexagonal recess.

6. A node for a ball rebounding apparatus as claimed in claim 5, wherein The maximum circumscribed circle diameter dimension of the outer contour of the positioning sleeve (7) is less than the inner diameter dimension of the annular protrusion (9), and the positioning sleeve (7) can be inserted into the inside of the annular protrusion (9) and abut against the front end face of the taper head (3).

7. A node for a ball rebounding apparatus as claimed in claim 5, wherein An external thread connecting portion (13) is protrusively arranged on the rear end face of the internally threaded mounting terminal (6), the outer wall of the ball node (1) is provided with a connecting hole (14) which is threadedly connected with the external thread connecting portion (13), and the internally threaded mounting terminal (6) and the ball node (1) are threadedly locked and then fixed by welding.

8. A goal frame node according to claim 2, wherein, A rubber gasket (15) is sleeved on the internally threaded mounting terminal (6) and arranged between the limiting protruding edge (11) of the protective sleeve (10) and the limiting protruding edge (11) of the internally threaded mounting terminal (6).

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