Infusion stand arm for use on a medical suspension bridge tower

Abstract

The utility model discloses a medical suspension bridge tower is used on the infusion support branch, including first branch, with the fixed seat and second branch of first branch rotary connection, the fixed seat and first branch end portion on fixed stud, the stud top outside screw joint has the nut, still include the pressure block of sleeveing in the stud outside, still include the connecting bearing of rotary sleeveing in the stud outside, the outside sleeveing of stud bottom end has the load component of anti -rotation, including sleeveing in the disc spring and friction pad of stud bottom end outside, the infusion support branch rotating position of this application has increased load component, and there is friction resistance between friction pad and first branch and second branch, can weaken the deflection of partial axial load, and disc spring can bear partial load, avoid the deformation of the both ends of first branch because of load, and the supporting block plays the role of supporting first branch and second branch end, and the load support point has been increased.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, specifically relating to an infusion stand support arm used on a medical suspension bridge tower. Background Technology

[0002] The infusion stand arms used on medical suspension bridges and towers are mainly used in important departments of hospitals to suspend infusion bags, infusion pumps and other infusion instruments and equipment, making it convenient for medical staff to work. Their function is to provide flexible and convenient support for infusion operations. The infusion stand arms installed on suspension bridges and towers usually have a rotation function. For example, the first operating arm and the second operating arm are rotatably connected by a connecting shaft, which can rotate the operating arm within a certain angle range.

[0003] Existing infusion stand arms experience excessive radial force on the rotating parts of the connecting shaft when subjected to excessive load, which can lead to problems such as loosening of rotating components and deformation of rotating parts. It is necessary to add load-bearing components at the rotating position of the support arm to achieve stability.

[0004] Existing infusion stand arms have the problem that the rotating position of the support arm will deform and loosen under excessive load. To address this, this application proposes an infusion stand arm for use on medical suspension bridges and towers. Utility Model Content

[0005] The purpose of this utility model is to provide an infusion stand arm used on a medical suspension bridge or tower, in order to solve the problems of loose rotating elements and deformation of rotating parts in the aforementioned background art where the support arm rotation position does not have an added load component.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an infusion stand arm used on a medical suspension bridge tower, comprising a first arm, a fixed base rotatably connected to the first arm, and a second arm. A stud is fixed to the end of the fixed base and the first arm, and a nut is spirally connected to the outer side of the top of the stud. It also includes a pressure block sleeved on the outer side of the stud; and a connecting bearing rotatably sleeved on the outer side of the stud. An anti-rotation load assembly is sleeved on the outer side of the bottom end of the stud, including a disc spring and a friction pad sleeved on the outer side of the bottom end of the stud.

[0007] Preferably, the bottom surface of the friction pad is in contact with the top surface of the disc spring, the outer surface of the friction pad is in contact with the inner surface of the first support arm, and an isolation ring is fixed inside the end of the first support arm to separate the friction pad and the connecting bearing.

[0008] Preferably, the connecting bearing includes a cone, an inner ring, and an outer ring, the bottom surface of the pressure block matches the top surface of the connecting bearing, and the outer diameter of the pressure block is the same as the outer diameter of the connecting bearing.

[0009] Preferably, the friction pad is annular, and the friction pad is connected to the stud by a screw.

[0010] Preferably, a support block is fixed on the outer surface of the fixed base, an arc-shaped limiting groove is formed on the top surface of the support block, and a rotatably connected rolling element is provided on the inner side wall of the limiting groove of the support block.

[0011] Preferably, a connecting plate is fixed to the end of both the first and second arms by screws, and a plug-in block with an arc-shaped orthographic projection is fixed to the bottom surface of the connecting plate, and the plug-in block is inserted into the support block.

[0012] Preferably, the surface of the insertion block is tangent to the surface of the rolling element, and the top surfaces of the fixed seat and the first support arm are respectively flush with the top surfaces of the adjacent support blocks.

[0013] Compared with the prior art, the beneficial effects of this utility model are: Through the design of the connecting bearing, friction pad, and disc spring, the connecting bearing can simultaneously bear radial load and unidirectional axial load, allowing the radial force of the shaft to be transmitted to the ends of the first and second arms. Through the design of the support block, which has surface contact with the ends of the first and second arms, the support block serves to support the ends of the first and second arms, increasing the load support points. Through the design of the plug-in block and rolling element, the plug-in block and rolling element make rotational contact, which can convert the load from the ends of the first and second arms into the contact force between the rolling element and the raceway of the support block. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the end of the first arm of this utility model. Figure 3 This is a top view of the support block of this utility model. Figure 4 This is a side view of the connecting plate of this utility model. Figure 5 This is a schematic diagram of the structure of the infusion stand support arm of this utility model installed on a suspension bridge or tower. In the diagram: 1. Fixed base; 2. First support arm; 3. Second support arm; 4. Stud; 5. Nut; 6. Pressure block; 7. Support block; 8. Connecting plate; 21. Connecting bearing; 71. Rolling element; 81. Insertion block; 91. Disc spring; 92. Friction pad block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1 to 5 This utility model provides a technical solution: an infusion stand support arm used on a medical suspension bridge tower, including a first support arm 2, a fixed base 1 rotatably connected to the first support arm 2, and a second support arm 3. Studs 4 are fixed to the ends of the fixed base 1 and the first support arm 2, and a nut 5 is screwed to the outer side of the top of the stud 4. Under the synergistic action of the stud 4 and the nut 5, the first support arm 2 is rotatably connected to the fixed base 1. It also includes a pressure block 6 sleeved on the outside of the stud 4, which serves to press and tighten a connecting bearing 21. Furthermore, it includes a connecting bearing 21 rotatably sleeved on the outside of the stud 4, which is installed inside one end of the first support arm 2 and the second support arm 3. Bearing 21 is a tapered roller bearing that can simultaneously withstand radial loads and unidirectional axial loads. The inclined design of the tapered surface allows the radial force of the shaft to be transmitted to the ends of the first support arm 2 and the second support arm 3. An anti-rotation load assembly is sleeved on the outer side of the bottom end of the stud 4, including a disc spring 91 and a friction pad 92 sleeved on the outer side of the bottom end of the stud 4. The disc spring 91 is made of iron, the friction pad 92 is made of nylon, and the first support arm 2 and the second support arm 3 are made of aluminum. When the first support arm 2 and the second support arm 3 bear a large load, there is frictional resistance between the friction pad 92 and the first support arm 2 and the second support arm 3, which can reduce part of the deflection force brought by the axial load. The disc spring 91 can bear part of the load.

[0017] In this embodiment, the bottom surface of the friction pad 92 is in contact with the top surface of the disc spring 91, the outer surface of the friction pad 92 is in contact with the inner surface of the first support arm 2, and an isolation ring is fixed inside the end of the first support arm 2 to separate the friction pad 92 and the connecting bearing 21. The isolation ring supports the connecting bearing 21, and there is frictional resistance between the friction pad 92 and the isolation ring.

[0018] In this embodiment, the connecting bearing 21 includes a cone, an inner ring, and an outer ring. The bottom surface of the pressure block 6 matches the top surface of the connecting bearing 21. The outer diameter of the pressure block 6 is the same as the outer diameter of the connecting bearing 21. The connecting bearing 21 is a tapered roller bearing, which can simultaneously bear radial load and unidirectional axial load. The inclined design of the tapered surface allows the radial force of the shaft to be transmitted to the ends of the first support arm 2 and the second support arm 3.

[0019] In this embodiment, the friction pad 92 is annular and is connected to the stud 4 by a screw. There is frictional resistance between the friction pad 92 and the first arm 2 and the second arm 3, which can reduce the deflection force caused by part of the axial load.

[0020] In this embodiment, a support block 7 is fixed on the outer surface of the fixed base 1. An arc-shaped limiting groove is formed on the top surface of the support block 7. A rotatably connected rolling element 71 is provided on the inner side wall of the limiting groove of the support block 7. A connecting plate 8 is fixed to the end of the first arm 2 and the second arm 3 by screws. An insertion block 81 with an arc-shaped orthographic projection is fixed on the bottom surface of the connecting plate 8. The insertion block 81 is inserted into the support block 7. The cross-section of the support block 7 is a right-angled triangle, and the top surface of the support block 7 is arc-shaped. The support block 7 and the first arm 3 are connected by screws. The bottom surfaces of the first arm 2 and the second arm 3 are in surface contact. The support block 7 supports the ends of the first arm 2 and the second arm 3, increasing the load support points. The surface of the plug block 81 is tangent to the surface of the rolling element 71. The top surfaces of the fixed seat 1 and the first arm 2 are flush with the top surfaces of the adjacent support blocks 7. The plug block 81 rotates in contact with the rolling element 71 on the support block 7. The rolling element 71 is conical, which can convert the load from the ends of the first arm 2 and the second arm 3 into the contact force between the rolling element 71 and the raceway of the support block 7.

[0021] Working principle and usage process of this utility model: The designed connecting bearing 21 is installed inside one end of the first arm 2 and the second arm 3. The connecting bearing 21 is a tapered roller bearing, which can simultaneously bear radial load and unidirectional axial load. The inclined design of the tapered surface allows the radial force of the shaft to be transmitted to the ends of the first arm 2 and the second arm 3. When the first arm 2 and the second arm 3 bear a large load, there is frictional resistance between the friction pad 92 and the first arm 2 and the second arm 3, which can reduce the deflection force caused by part of the axial load, and the disc spring 91 can bear part of the load. The support block 7 is in surface contact with the bottom surface of the ends of the first arm 2 and the second arm 3. The support block 7 serves to support the ends of the first arm 2 and the second arm 3, increasing the load support points. When the first arm 2 and the second arm 3 rotate, the plug block 81 makes rotational contact with the rolling element 71 on the support block 7. The rolling element 71 is conical, which can convert the load brought by the ends of the first arm 2 and the second arm 3 into the contact force between the rolling element 71 and the raceway of the support block 7. In summary: The infusion stand arm rotation position of this application has an added load-bearing component. The friction pad 92 has frictional resistance between the first arm 2 and the second arm 3, which can reduce the deflection force caused by part of the axial load. The disc spring 91 can bear part of the load and prevent the ends of the first arm 2 from deforming due to the load. The support block 7 plays the role of supporting the ends of the first arm 2 and the second arm 3, increasing the load support points.

[0022] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An infusion stand support arm used on a medical suspension bridge or tower, characterized in that: It includes a first arm (2), a fixed seat (1) rotatably connected to the first arm (2), and a second arm (3). A stud (4) is fixed on the end of the fixed seat (1) and the first arm (2). A nut (5) is spirally connected to the outer side of the top of the stud (4). It also includes a pressure block (6) sleeved on the outside of the stud (4). It also includes a connecting bearing (21) rotatably sleeved on the outside of the stud (4). An anti-rotation load assembly is sleeved on the outside of the bottom end of the stud (4), including a disc spring (91) and a friction pad (92) sleeved on the outside of the bottom end of the stud (4).

2. The infusion stand support arm used on a medical suspension bridge tower according to claim 1, characterized in that: The bottom surface of the friction pad (92) is in contact with the top surface of the disc spring (91), the outer surface of the friction pad (92) is in contact with the inner surface of the first support arm (2), and an isolation ring is fixed inside the end of the first support arm (2) to separate the friction pad (92) and the connecting bearing (21).

3. The infusion stand support arm used on a medical suspension bridge tower according to claim 1, characterized in that: The connecting bearing (21) includes a cone, an inner ring and an outer ring. The bottom surface of the pressure block (6) matches the top surface of the connecting bearing (21). The outer diameter of the pressure block (6) is the same as the outer diameter of the connecting bearing (21).

4. The infusion stand support arm used on a medical suspension bridge tower according to claim 1, characterized in that: The friction pad (92) is annular, and the friction pad (92) is connected to the stud (4) by a screw.

5. The infusion stand support arm used on a medical suspension bridge tower according to claim 1, characterized in that: A support block (7) is fixed on the outer surface of the fixed base (1). An arc-shaped limiting groove is provided on the top surface of the support block (7). A rotatably connected rolling element (71) is provided on the inner side wall of the limiting groove of the support block (7).

6. The infusion stand support arm used on a medical suspension bridge tower according to claim 5, characterized in that: The first arm (2) and the second arm (3) are each fixed with a connecting plate (8) by screws. The bottom surface of the connecting plate (8) is fixed with a plug block (81) whose orthographic projection is an arc shape. The plug block (81) is inserted into the support block (7).

7. The infusion stand support arm used on a medical suspension bridge tower according to claim 6, characterized in that: The surface of the plug block (81) is tangent to the surface of the rolling element (71), and the top surfaces of the fixed seat (1) and the first support arm (2) are flush with the top surfaces of the adjacent support block (7).

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