阅读说明：本技术 一种外置支架万向吸气臂 (Universal air suction arm with external support ) 是由 张雅沙 张凯杰 于 2021-09-27 设计创作，主要内容包括：本发明公开了一种外置支架万向吸气臂,包括固定结构、肩部横臂、上臂支架和前臂支架,所述上臂支架通过肩关节和肩部横臂固定在固定机构上,上臂支架的上方安装有上臂硬管,上臂硬管的左端连接有肩部软管,所述前臂支架通过肘关节连接在上臂支架的右侧,前臂支架的上方安装有前臂硬管,所述前臂硬管与上臂硬管之间通过肘部软管连接,前臂硬管的右侧通过腕关节和手柄依次连接有腕部软管和风罩。本发明肩关节处有工作范围调整装置,可以将工作范围向下或向上旋转一定角度以满足不同使用场合的需要；腕关节为万向连接件,设有简单实用的可调摩擦阻尼装置,可以长期确保性能稳定,风罩方向调整轻便、悬停可靠。(The invention discloses an external support universal air suction arm which comprises a fixing structure, a shoulder cross arm, an upper arm support and a forearm support, wherein the upper arm support is fixed on the fixing structure through a shoulder joint and the shoulder cross arm, an upper arm hard tube is arranged above the upper arm support, the left end of the upper arm hard tube is connected with a shoulder hose, the forearm support is connected to the right side of the upper arm support through an elbow joint, a forearm hard tube is arranged above the forearm support, the forearm hard tube is connected with the upper arm hard tube through an elbow hose, and the right side of the forearm hard tube is sequentially connected with a wrist hose and an air cover through a wrist joint and a handle. The shoulder joint is provided with the working range adjusting device, so that the working range can be rotated downwards or upwards by a certain angle to meet the requirements of different use occasions; the wrist joint is a universal connecting piece and is provided with a simple and practical adjustable friction damping device, so that the performance stability can be ensured for a long time, and the direction of the fan cover is adjusted conveniently and reliably.)

1. The utility model provides an external support universal arm of breathing in, a serial communication port, including fixed knot structure (1), shoulder xarm (2), upper arm support (5) and forearm support (8), upper arm support (5) are fixed on fixed knot structure (1) through shoulder joint (3) and shoulder xarm (2), and upper arm hard tube (16) are installed to the top of upper arm support (5), and the left end of upper arm hard tube (16) is connected with shoulder hose (17), forearm support (8) are connected on the right side of upper arm support (5) through elbow joint (6), and forearm hard tube (14) are installed to the top of forearm support (8), be connected through elbow hose (15) between forearm hard tube (14) and upper arm hard tube (16), and the right side of forearm hard tube (14) is passed through wrist joint (9) and handle (10) and has connected gradually wrist hose (12) and fan housing (11), and an air valve knob (13) is installed at the upper end of the forearm hard tube (14).

2. The external support universal air suction arm as recited in claim 1, wherein the shoulder joint (3) and the upper arm support (5), the upper arm support (5) and the elbow joint (6), the elbow joint (6) and the forearm support (8), the wrist joint (9) and the handle (10), the wrist joint (9) and the forearm hard tube (14) respectively form a group of rotating members, and an adjustable friction damping device is arranged between each group of rotating members.

3. The external bracket universal air suction arm as recited in claim 2, characterized in that the adjustable friction damping device comprises a bolt (101), a belleville spring (102), a friction plate (103) and a lock nut (104), the belleville spring (102) is placed between the bolt head of the bolt (101) and the rotating member and between the lock nut (104) and the rotating member, and the friction plate (103) is placed between the rotating members.

4. The external support universal air suction arm as claimed in claim 2 or 3, wherein a synchronous anti-loosening pad (105) is further arranged at the joint of the wrist joint (9) and the forearm hard tube (14).

5. The external support universal air suction arm as claimed in claim 1, wherein the upper arm support (5) comprises an upper arm upper connecting rod (201) and an upper arm lower connecting rod (202), and an upper arm gas spring (4) is installed between the upper arm upper connecting rod (201) and the upper arm lower connecting rod (202).

6. The external support universal air suction arm as defined in claim 1, wherein the forearm support (8) comprises an upper forearm link (301) and a lower forearm link (302), and a forearm air spring (7) is mounted between the upper forearm link (301) and the lower forearm link (302).

7. The external bracket universal air suction arm as set forth in claim 1, characterized in that the shoulder joint piece (401) of the shoulder cross arm (2) and the shoulder joint (3) is provided with a corresponding central fixing hole and a plurality of edge fixing holes, the adjacent edge fixing holes are concentric circles of the central fixing hole, and the shoulder cross arm (2) and the shoulder joint (3) are fixedly connected through a central fixing screw (402) and an edge fixing screw (403).

8. The external bracket universal air suction arm as recited in claim 1, characterized in that the fixed structure (1) is a wall bracket, the shoulder cross arm (2) is connected with the wall bracket (1) through a vertical shaft (501), a friction bushing (502) and a bearing seat (503) are sequentially arranged outside the vertical shaft (501), bearings (504) are arranged at the upper and lower ends of the friction bushing (502), and a damping adjusting screw (505) is arranged in the middle of the vertical shaft (501).

9. The external support universal air suction arm as set forth in claim 1, characterized in that the fixed structure (1) is a rotary flange seat and the shoulder cross arm (2) is a standing cross arm or a hoisting support type cross arm.

Technical Field

The invention relates to the field of environmental protection, in particular to an external support universal air suction arm.

Background

The existing air suction arms in the market are mostly provided with built-in supports, and joints and supports are arranged in ventilation pipelines, so that the ventilation resistance is large, the built-in joints and the supports are polluted by dust and oil smoke, the operation is heavy, and the service life is limited.

The traditional vertical rotation structure of the air suction arm with the external support has the defect that when the vertical rotation center of the air suction arm deviates from the vertical position, the swing phenomenon is generated due to the action of gravity, so that the normal use is influenced. In addition, the traditional external support air suction arm does not have a set of reasonable balance and friction damping mechanism, and the reliable hovering at any position can not be ensured while the operation is light in the use process, so that the work efficiency is greatly influenced by frequent adjustment.

Disclosure of Invention

The invention aims to provide an external support universal air suction arm which can collect oil mist, dust, welding smoke dust and organic solvent volatile gas, remove hot air and supply air locally, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an external support universal arm of breathing in, includes fixed knot structure, shoulder xarm, upper arm support and forearm support, the upper arm support is fixed on fixed knot constructs through shoulder joint and shoulder xarm, and the upper arm hard tube is installed to the top of upper arm support, and the left end of upper arm hard tube is connected with the shoulder hose, the forearm support passes through elbow joint and connects on the right side of upper arm support, and the forearm hard tube is installed to the top of forearm support, through elbow hose connection between forearm hard tube and the upper arm hard tube, the right side of forearm hard tube has connected gradually wrist hose and fan housing through wrist joint and handle, the blast gate knob is installed to the upper end of forearm hard tube.

Preferably, the shoulder joint and upper arm support, the upper arm support and elbow joint, the elbow joint and forearm support, the wrist joint and handle, the wrist joint and forearm hard tube constitute a set of rotating members respectively, and an adjustable friction damping device is arranged between each set of rotating members.

Preferably, the adjustable friction damping device comprises a bolt, a belleville spring, a friction plate and a lock nut, the belleville spring is placed between the bolt head of the bolt and the rotating member and between the lock nut and the rotating member, and the friction plate is arranged between the rotating members.

Preferably, a synchronous anti-loosening pad is further arranged at the joint of the wrist joint and the forearm hard tube.

Preferably, the upper arm support comprises an upper arm connecting rod and a lower arm connecting rod, and an upper arm gas spring is installed between the upper arm connecting rod and the lower arm connecting rod.

Preferably, the forearm support comprises an upper forearm connecting rod and a lower forearm connecting rod, and a forearm air pressure spring is arranged between the upper forearm connecting rod and the lower forearm connecting rod.

Preferably, the shoulder cross arm and the shoulder joint piece of the shoulder joint are provided with a corresponding central fixing hole and a plurality of edge fixing holes, the adjacent edge fixing holes are concentric with the central fixing hole, and the shoulder cross arm and the shoulder joint are fixedly connected through a central fixing screw and an edge fixing screw.

Preferably, the fixed structure is a wall support, the shoulder cross arm is connected with the wall support through a vertical shaft, a friction bushing and a bearing seat are sequentially arranged on the outer side of the vertical shaft, bearings are arranged at the upper end and the lower end of the friction bushing, and a damping adjusting screw is arranged in the middle of the vertical shaft.

Preferably, the fixed structure is a rotary flange seat, and the shoulder cross arm is a standing cross arm or a hoisting bracket type cross arm.

Compared with the prior art, the invention has the beneficial effects that:

1. the damping bush structure capable of adjusting the friction force, which is composed of the bearing seat, the friction bush, the bearing and the damping adjusting screw, is arranged on the vertical shaft part, so that the air suction arm is ensured to rotate lightly horizontally, and the possible drifting phenomenon when the vertical shaft deviates from the vertical position is avoided.

2. The shoulder joint is provided with the working range adjusting device, so that the working range can be rotated downwards or upwards by a certain angle to meet the requirements of different use occasions;

3. the air pressure spring is arranged in the cleaner position relative to the installation environment in the air suction arm support, and is not easy to damage, so that the long-term stability of the performance of the air suction arm is ensured.

4. The wrist joint is a universal connecting piece, is provided with a simple and practical adjustable friction damping device, can ensure stable performance for a long time, and is light in adjustment of the direction of the fan cover and reliable in hovering.

Drawings

FIG. 1 is a schematic view of the present invention in a suspended configuration;

FIG. 2 is a schematic view of an adjustable friction damping device between a shoulder joint and an upper arm support, between an upper arm support and an elbow joint, and between an elbow joint and a forearm support in accordance with the present invention;

FIG. 3 is a schematic view of an adjustable friction damping device disposed between the wrist joint and the handle of the present invention;

FIG. 4 is a schematic view of an adjustable friction damping device disposed between a wrist joint and a forearm rigid tube according to the present invention;

FIG. 5 is a schematic view of an installation structure of an upper arm gas spring according to the present invention;

FIG. 6 is a schematic view of the mounting structure of the forearm gas spring of the present invention;

FIG. 7 is a schematic view of the connection between the shoulder cross arm and the shoulder joint according to the present invention;

FIG. 8 is a schematic view of a vertical axis of the present invention;

FIG. 9 is a schematic structural view of the present invention in a standing position;

FIG. 10 is a schematic structural view of the flange-mounted type of the present invention;

in the figure: 1-a fixed structure; 2-shoulder cross arm; 3-shoulder joint; 4-upper arm gas spring; 5-upper arm support; 6-elbow joint; 7-front arm gas spring; 8-forearm support; 9-wrist joint; 10-a handle; 11-a fan cover; 12-wrist hose; 13-blast gate knob; 14-forearm dura mater; 15-elbow hose; 16-upper arm hard tube; 17-shoulder hose; 101-a bolt; 102-a belleville spring; 103-friction plate; 104-a lock nut; 105-synchronous anti-loosening pad; 201-upper arm upper link; 202-upper arm lower link; 301-forearm upper link; 302-forearm lower link; 401-shoulder joint plate; 402-center set screw; 403-edge set screws; 501-vertical axis 501; 502-friction bushing; 503-bearing seat; 504-a bearing; 505-damping adjustment screw.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Example 1

Please refer to fig. 1, a suspension type external support universal air suction arm, which comprises a fixing structure 1, a shoulder cross arm 2, an upper arm support 5 and a forearm support 8, wherein the upper arm support 5 is fixed on the fixing structure 1 through a shoulder joint 3 and the shoulder cross arm 2, an upper arm hard tube 16 is installed above the upper arm support 5, a shoulder hose 17 is connected to the left end of the upper arm hard tube 16, the forearm support 8 is connected to the right side of the upper arm support 5 through an elbow joint 6, a forearm hard tube 14 is installed above the forearm support 8, the forearm hard tube 14 is connected with the upper arm hard tube 16 through an elbow hose 15, and the right side of the forearm hard tube 14 is sequentially connected with a wrist hose 12 and an air cover 11 through a wrist joint 9 and a handle 10. And an air valve knob 13 is arranged at the upper end of the forearm hard tube 14, so that the air quantity in the tube can be controlled.

The shoulder joint 3 and upper arm support 5, upper arm support 5 and elbow joint 6, elbow joint 6 and forearm support 8, wrist joint 9 and handle 10, wrist joint 9 and forearm hard tube 14 constitute a set of rotating member respectively, all are provided with adjustable friction damping device between each set of rotating member. The wrist joint 9 is a ten-byte universal joint which can make the wind cover 11 rotate in any direction.

Referring to fig. 2-4, the adjustable friction damping device includes a bolt 101, a belleville spring 102, a friction plate 103 and a lock nut 104, the belleville spring 102 is disposed between the bolt head of the bolt 101 and the rotating member and between the lock nut 104 and the rotating member, and the friction plate 103 is disposed between the rotating members. When the rotating member rotates, the bolt 101 is stationary and does not rotate relative to the part to be pressed, which is the pressing surface of the lock nut 104. A synchronous anti-loose pad 105 is also arranged at the joint of the wrist joint 9 and the forearm hard tube 14.

Referring to fig. 5, the upper arm bracket 5 includes an upper arm upper link 201 and an upper arm lower link 202, an upper arm gas spring 4 is installed between the upper arm upper link 201 and the upper arm lower link 202, and the upper arm gas spring 4 is located at the bottom of the upper arm hard tube 16 and is shielded by the upper arm hard tube 16.

Referring to fig. 6, the forearm support 8 includes an upper forearm link 301 and a lower forearm link 302, a forearm pneumatic spring 7 is installed between the upper forearm link 301 and the lower forearm link 302, and the forearm pneumatic spring 7 is located at the bottom of the forearm hard tube 14 and is blocked by the forearm hard tube 14.

Referring to fig. 7, a central fixing hole and a plurality of edge fixing holes are correspondingly formed in a shoulder joint plate 401 of the shoulder cross arm 2 and the shoulder joint 3, the adjacent edge fixing holes are concentric with the central fixing hole, and the shoulder cross arm 2 and the shoulder joint 3 are fixedly connected through a central fixing screw 402 and an edge fixing screw 403. The included angle of the adjacent edge fixing holes on the shoulder cross arm 2 on the concentric circle of the central fixing hole is 3N or 2M, the included angle of the adjacent edge fixing holes on the shoulder joint piece 401 on the concentric circle of the central fixing hole is 2N or 3M, the shoulder joint piece 401 is rotated after a central fixing screw 402 is installed, the angle is locked by an edge fixing screw 403, and the angle of adjustment of each gear is N or M.

Referring to fig. 8, the fixing structure 1 is a wall bracket, the shoulder cross arm 2 is connected with the wall bracket 1 through a vertical shaft 501, a friction bushing 502 and a bearing seat 503 are sequentially arranged outside the vertical shaft 501, bearings 504 are arranged at the upper end and the lower end of the friction bushing 502, and a damping adjusting screw 505 is arranged in the middle of the vertical shaft 501.

Example 2

Referring to fig. 9, the fixed structure 1 is a rotating flange seat, the shoulder cross arm 2 is a standing cross arm, the rotating flange seat is installed above the horizontal plane, and has three functions of bearing, ventilation and horizontal rotation, and the standing cross arm is used for mechanically connecting the suction arm support and the rotating flange seat. The other structure is the same as that of embodiment 1.

Example 3

Referring to fig. 10, a flange-mounted external support universal air suction arm, where the fixed structure 1 is a rotating flange base, the shoulder cross arm 2 is a lifting support cross arm, the rotating flange base is mounted on a downward flange surface in a hanging manner, and has three functions of bearing, ventilation and horizontal rotation, and the lifting support cross arm is used for mechanically connecting the air suction arm support and the rotating flange base. The other structure is the same as that of embodiment 1.

The shoulder joint 3 of the invention is provided with a working range adjusting device, and an upper arm gas spring 4 and a forearm gas spring 7 are respectively arranged in an upper arm bracket 5 and a forearm bracket 8. The forearm hard tube 14 is provided with an air valve knob 13 for controlling the air quantity in the tube. The forearm hard tube 14, the wrist soft tube 12 and the fan cover 11 are mechanically connected by a wrist joint 9, and the wrist joint 9 is a universal cross joint and can enable the fan cover 11 to rotate in any direction. And all movable components of the whole bracket are provided with the adjustable friction damping devices, so that the bracket is light and flexible to operate, has enough anti-swing capacity, stable performance, reliable hovering, good durability and long service life.