Harmful gas detection device

Abstract

The invention discloses a harmful gas detection device. The harmful gas detection device comprises a handheld mechanism, a detection mechanism arranged on the handheld mechanism and an external connection mechanism arranged on the detection mechanism, the detection mechanism comprises a connecting cylinder arranged on the handheld mechanism, a detector body arranged in the connecting cylinder and abutting assemblies arranged at the two ends of the connecting cylinder. The external connection mechanism comprises a wheel body and an external connection sleeve which are arranged on the connecting cylinder, and a rotating assembly arranged on the external connection sleeve. The detection mechanism can be placed at a front position of a worker through the arrangement of the handheld mechanism; the arrangement of the detection mechanism can guide air at different positions on a forward road into the detector main body in the moving process, so that the detection effect is improved, the arrangement of the wheel bodies can effectively improve more loading capacity, the increase of the loading capacity can better improve the storage amount of batteries of the device, and the detection efficiency is improved. And the operation time of the device is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of underground integrated pipe corridors, in particular to a harmful gas detection device. Background Art

[0002] The underground comprehensive pipeline corridor is a common pipeline for various projects. It is built underground in the city and is a public tunnel used for centralized laying of municipal pipelines such as electricity, communications, radio and television, and water supply. It is equivalent to the lifeline of modern city operation. Once a problem occurs, even the entire city will be affected. With the increase in population size and the increase in urban demand, the scale of underground comprehensive pipeline corridors has become larger and larger, and the responsibilities assumed have become more and more important. As the scale of underground comprehensive pipeline corridors expands, the maintenance of pipeline corridor power equipment and the safety of personnel have become more and more important.

[0003] When entering the pipe gallery, the staff needs to carry the corresponding detection equipment, which is generally a pump-suction gas detector. However, in the actual work process, the detection equipment is worn on the staff. When harmful gases are detected, the personnel are already in a relatively dangerous area. Therefore, we designed a device that can perform pathfinding detection and add multi-directional air suction inside it to improve efficiency. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problem that the harmful gas detection device mentioned above or in the prior art cannot timely detect whether there is harmful gas in the environment ahead, the present invention is proposed.

[0006] Therefore, an object of the present invention is to provide a harmful gas detection device.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a harmful gas detection device, comprising a handheld mechanism, a detection mechanism arranged on the handheld mechanism, and an external mechanism arranged on the detection mechanism; the detection mechanism comprises a connecting tube arranged on the handheld mechanism, a detector body arranged inside the connecting tube, and a resistance component arranged at both ends of the connecting tube; the external mechanism comprises a wheel body and an external sleeve arranged on the connecting tube, a rotating component arranged on the external sleeve, an interlaced component arranged on the external sleeve, and a sleeve ring arranged on the other side of the wheel body.

[0008] As a preferred solution of the harmful gas detection device of the present invention, wherein: multiple air inlet holes are provided at both ends of the connecting tube, isolation mesh is provided inside the air inlet hole, and an external groove is provided on the side of the outer wall of the connecting tube close to the air inlet hole.

[0009] As a preferred solution of the harmful gas detection device of the present invention, the resistance component includes a swivel arranged on the inner wall of the connecting tube, and an embedded groove is provided at the connection between the swivel and the connecting tube. The connecting tube is located in the embedded groove and is fixedly connected to an external plate, a reset spring is provided on the external plate, a connecting plate is provided between the other end of the reset spring and the swivel, and a mesh is provided on the inner wall of the swivel.

[0010] As a preferred solution of the harmful gas detection device of the present invention, wherein: the reset spring is arc-shaped, and the reset spring is located in the embedded groove, and the rotating ring is rotatably connected to the connecting tube.

[0011] As a preferred solution of the harmful gas detection device of the present invention, the rotating assembly includes a circular plate on the external sleeve, a built-in groove arranged on the circular plate, a contraction spring arranged on the built-in groove, a docking block arranged on the contraction spring, and a first inclined surface is provided on the docking block.

[0012] As a preferred solution of the harmful gas detection device of the present invention, wherein: the rotating assembly also includes a driving rod arranged on the rotating ring, a second inclined surface arranged on the driving rod, the cross-section of the built-in groove is rectangular, the number of the built-in grooves is multiple, and the multiple built-in grooves are distributed in a ring array on the circumferential side of the circular plate, and the driving rod corresponds to the docking block one by one.

[0013] As a preferred solution of the harmful gas detection device of the present invention, wherein: a connecting pipe is provided at one end of the circular plate away from the rotating ring, and an arc block is fixedly connected to the other end of the connecting pipe, and the connecting pipe passes through the arc block.

[0014] As a preferred solution of the harmful gas detection device of the present invention, wherein: the staggered component includes a contact cover arranged on one side of the arc block, a plurality of air inlet pipes are arranged on the contact cover, a guide box is arranged at the end of the air inlet pipe, and the plurality of air inlet pipes are connected by a fixing ring; a sealing ring is arranged on the sleeve ring and fits with the external groove, and a notch is arranged on the sleeve ring.

[0015] As a preferred solution of the harmful gas detection device of the present invention, the plurality of air inlet pipes are distributed on the contact cover in a circular array, and the notch is matched with the air inlet hole.

[0016] As a preferred solution of the harmful gas detection device of the present invention, the handheld mechanism includes a support rod arranged on the connecting tube, a handle arranged at the other end of the support rod, and a folding leg arranged at the bottom of the support rod.

[0017] The beneficial effects of the harmful gas detection device of the present invention: the setting of the handheld mechanism in the present invention can place the detection mechanism in the front position of the staff, and the setting of the detection mechanism can introduce the air at different positions on the road ahead into the interior of the detector body during the movement, thereby improving the detection effect, and the setting of the wheel body can effectively increase the load capacity, and the increase in load capacity can better increase the battery storage capacity of the device, thereby increasing the operating time of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 This is an overall schematic diagram of a harmful gas detection device.

[0020] Figure 2 This is a schematic diagram of the bottom structure of the casing body of the harmful gas detection device.

[0021] Figure 3 This is a schematic diagram of the middle structure of the casing body of the harmful gas detection device.

[0022] Figure 4 This is a schematic diagram of the sealing mechanism structure of a harmful gas detection device.

[0023] Figure 5 This is a schematic diagram of the fixed component structure of the harmful gas detection device.

[0024] Figure 6 This is a cross-sectional view of the fixed components of the harmful gas detection device.

[0025] Figure 7 This is a schematic diagram of the positioning mechanism structure of the harmful gas detection device. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, reference Figures 1 to 3 , which is the first embodiment of the present invention, provides a harmful gas detection device, including a handheld mechanism 100, a detection mechanism 200 arranged on the handheld mechanism 100, and an external mechanism 300 arranged on the detection mechanism 200; the detection mechanism 200 includes a connecting tube 201 arranged on the handheld mechanism 100, a detector body 202 arranged inside the connecting tube 201, and a resistance component 203 arranged at both ends of the connecting tube 201.

[0030] Specifically, the setting of the handheld mechanism 100 can effectively drive the detection mechanism 200 to move, and while driving the detection mechanism 200 to move, it can also drive the connecting tube 201 to move. The connecting tube 201 is fixedly connected to the detector body 202 in the detection mechanism 200. The detector body 202 is a pump-suction gas detector, which is equipped with an internal power supply. Due to the setting of the wheel body 301, the load capacity of the device can be effectively increased, the power reserve is increased, and the use time of the device is thereby increased. The setting of the resistance component 203 can effectively resist the rotating component 303, thereby driving the rotating component 303 to be blocked during rotation. The blocked rotating component 303 can effectively adjust the position between the contact cover 304a and the arc block 303i.

[0031] Both ends of the connecting tube 201 are provided with a plurality of air inlet holes 201a, the air inlet holes 201a are provided with an isolation mesh 201b, and the outer wall of the connecting tube 201 is provided with an external groove 201c on one side close to the air inlet holes 201a. The hand-held mechanism 100 includes a support rod 101 provided on the connecting tube 201, a handle 102 provided at the other end of the support rod 101, and a folding leg 103 provided at the bottom of the support rod 101.

[0032] Preferably, the cross-section of the air inlet hole 201a is rectangular, and the setting of the air inlet hole 201a can effectively limit the isolation mesh 201b, and can effectively introduce external air into the connecting tube 201, and the setting of the isolation mesh 201b can effectively filter the air entering the connecting tube 201, and the cross-section of the isolation mesh 201b is rectangular, and the isolation mesh 201b is located in the middle area of ​​the air inlet hole 201a.

[0033] In summary, the setting of the wheel body 301 can effectively increase the load capacity, and the increase in load capacity can better increase the storage capacity of the battery of the device, thereby increasing the operating time of the device and ensuring stability during operation and maintenance.

[0034] Example 2, reference Figure 2-5 , which is the second embodiment of the present invention, and is different from the previous embodiment in that:

[0035] The resistance component 203 includes a swivel 203a arranged on the inner wall of the connecting tube 201, and an embedded groove 203b is provided at the connection between the swivel 203a and the connecting tube 201. The connecting tube 201 is located in the embedded groove 203b and is fixedly connected with an external plate 203c, a return spring 203d is provided on the external plate 203c, a connecting plate 203e is provided between the other end of the return spring 203d and the swivel 203a, and a mesh 203f is provided on the inner wall of the swivel 203a.

[0036] Specifically, the cross-section of the rotating ring 203a is circular, and the rotating ring 203a is made of stainless steel. The setting of the rotating ring 203a can effectively limit the reset spring 203d, and the setting of the reset spring 203d can effectively drive the rotating ring 203a to reset. The setting of the rotating ring 203a can effectively fix the external plate 203c. The cross-section of the rotating ring 203a is rectangular. The rotating ring 203a is fixedly connected to the external plate 203c, and the external plate 203c is fixedly connected to the reset spring 203d. The setting of the connecting plate 203e can effectively limit the reset spring 203d, and the reset spring 203d is fixedly connected to the connecting plate 203e. The connecting plate 203e is fixedly connected to the connecting tube 201, and the connecting tube 201 will not rotate during operation, so that the device only rotates the wheel body 301 and the external sleeve 302 during use, and the setting of the grid 203f can effectively protect the main body of the detection mechanism 200.

[0037] The return spring 203 d is arc-shaped and is located in the embedded groove 203 b . The rotating ring 203 a is rotatably connected to the connecting tube 201 .

[0038] Furthermore, the cross section of the embedded groove 203b is circular, the inner wall of the embedded groove 203b is in contact with the outer wall of the return spring 203d, and the connecting tube 201 is made of stainless steel. The setting of the connecting tube 201 can effectively limit the rotating ring 203a.

[0039] The rest of the structure is the same as that of Example 1.

[0040] In summary, the setting of the swivel 203a can effectively limit the reset spring 203d, the setting of the reset spring 203d can effectively drive the swivel 203a to reset, the setting of the swivel 203a can effectively fix the external plate 203c, and the setting of the connecting plate 203e can effectively limit the reset spring 203d.

[0041] Example 3, reference Figures 1 to 7 , which is the third embodiment of the present invention. The difference from the previous embodiment is the external mechanism 300. The external mechanism 300 includes a wheel body 301 and an external sleeve 302 arranged on the connecting tube 201, a rotating assembly 303 arranged on the external sleeve 302, a staggered assembly 304 arranged on the external sleeve 302, and a sleeve ring 305 arranged on the other side of the wheel body 301. The rotating assembly 303 includes a circular plate 303a on the external sleeve 302.

[0042] Specifically, the setting of the external mechanism 300 can effectively support the connecting tube 201, ensure the distance between the connecting tube 201 and the ground, and prevent air from entering the connecting tube 201 and sucking in dust, thereby affecting the detection effect of the detector body 202. The rotating component 303 is set on both sides of the connecting tube 201, and can effectively follow the movement of the connecting tube 201. During the operation, the connecting tube 201 keeps moving in a translational state, and the rotating component 303 keeps moving in a rotational state during the movement. The setting of the staggered component 304 can effectively block the rotating component 303, and can change the position between the contact cover 304a and the arc block 303i during operation, thereby constantly changing the connection between the arc block 303i and different air inlet pipes 304b, so that the connecting pipe 303h in the arc block 303i rotates to contact multiple air inlet pipes 304b. The arc block 303i and the contact cover 304a are both made of rubber. The setting of the rubber material can achieve the required degree of sealing between the arc block 303i and the contact cover 304a.

[0043] A built-in groove 303b is arranged on the circular plate 303a, a contraction spring 303c is arranged on the built-in groove 303b, and a docking block 303d is arranged on the contraction spring 303c. A first inclined surface 303e is arranged on the docking block 303d. The rotating assembly 303 also includes a driving rod 303f arranged on the rotating ring 203a, and a second inclined surface 303g is arranged on the driving rod 303f. The cross-section of the built-in groove 303b is rectangular. There are multiple built-in grooves 303b, and the multiple built-in grooves 303b are distributed in a ring array around the circular plate 303a. The driving rod 303f corresponds to the docking block 303d one by one.

[0044] Furthermore, the setting of the rectangular built-in groove 303b facilitates better contact with the docking block 303d, and can effectively prevent the driving rod 303f from rotating during the rotation of the circular plate 303a. The two ends of the contraction spring 303c are respectively fixedly connected to the docking block 303d and the internal groove, the first inclined surface 303e is in contact with the second inclined surface 303g, the cross-section of the driving rod 303f is rectangular, the driving rod 303f is made of stainless steel, and the driving rod 303f is fixedly connected to the rotating ring 203a. The setting of the built-in groove 303b facilitates better limiting the contraction spring 303c.

[0045] A pipe 303h is provided at one end of the circular plate 303a away from the rotating ring 203a, and an arc block 303i is fixedly connected to the other end of the pipe 303h, and the pipe 303h passes through the arc block 303i. The staggered assembly 304 includes a contact cover 304a arranged on one side of the arc block 303i, and a plurality of air inlet pipes 304b are arranged on the contact cover 304a, and a guide box 304c is arranged at the end of the air inlet pipe 304b, and the plurality of air inlet pipes 304b are connected by a fixing ring 304d;

[0046] Furthermore, the arc block 303i is fixedly connected to the connecting pipe 303h, and multiple air inlet pipes 304b are distributed in a circular array around the fixed ring 304d. The air inlet end of the guide box 304c faces outward, and the lengths of the multiple air inlet pipes 304b are different. The setting of the arc block 303i facilitates better connection between the contact cover 304a and the connecting pipe 303h, and the setting of the fixed ring 304d facilitates better limiting of the air inlet pipe 304b. When it is collided during operation, the setting of the fixed ring 304d can play a protective role.

[0047] The sleeve ring 305 is provided with a sealing ring 304e that fits the external groove 201c, and a notch 304f is provided on the sleeve ring 305. A plurality of air inlet pipes 304b are distributed in an annular array on the contact cover 304a, and the notch 304f is adapted to the air inlet hole 201a.

[0048] Preferably, the setting of the sleeve ring 305 can effectively block the air inlet 201a, and the notch 304f on the sleeve ring 305 can effectively connect the air inlet 201a with the external air, so that the detector body 202 can introduce the external air into the detector body 202 during operation. The two notches 304f on the two contact covers 304a, when one is fully connected with the air inlet 201a during operation, the other notch 304f is staggered with the air inlet 201a, so that the device can ensure the suction of the detector body 202 during operation, and can better introduce the gas in the external air into the detector body 202.

[0049] The rest of the structure is the same as that of Example 2.

[0050] When in use, the device is placed in the forward direction of the user, the handle 102 is held, and the device is pushed forward. The handle 102 moves while the connecting tube 201 moves. At this time, the detector body 202 is started, and the detector body 202 inhales the external air and detects the harmful gas in the air. When the harmful gas appears, an alarm sound is issued;

[0051] When the connecting tube 201 moves, the gravity generated by the connecting tube 201 and the components connected thereto will be applied to the wheel body 301. Under the action of gravity, there is friction between the wheel body 301 and the ground, thereby driving the wheel body 301 to rotate. When the wheel body 301 rotates, it drives the external sleeve 302 to rotate. When the external sleeve 302 rotates, it drives the air intake pipe 304b to rotate. When the air intake pipe 304b rotates, it drives the arc block 303i to rotate. When the arc block 303i rotates, The movable circular plate 303a rotates, and the circular plate 303a drives the docking block 303d to rotate during the rotation process. After the docking block 303d contacts the driving rod 303f, the first inclined surface 303e contacts the second inclined surface 303g, and the rotation resistance of the circular plate 303a is increased, thereby causing the arc block 303i to rotate on the contact cover 304a. At this time, the arc block 303i contacts with multiple air inlet pipes 304b alternately, so that the detector body 202 inhales external air from different air inlet pipes 304b;

[0052] At the same time, the wheel body 301 drives the sleeve ring 305 to rotate during the rotation process, and the sleeve ring 305 drives the notch 304f to rotate during the rotation process. When the notch 304f rotates, it passes through the air inlet 201a in sequence, so as to achieve the purpose of inhaling air at different heights, thereby improving the detection effect;

[0053] When the device needs to be placed, the folding legs 103 are put down. At this time, the ground and the folding legs 103 form a support, and the external mechanism 300 and the detection mechanism 200 are in contact with the ground to form a triangular area, thereby ensuring the stability of the device.

[0054] In summary, the setting of the sleeve ring 305 can effectively block the air inlet 201a, and the setting of the external mechanism 300 can effectively support the connecting tube 201, ensure the distance between the connecting tube 201 and the ground, and prevent air from entering the connecting tube 201 and sucking in dust.

[0055] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0057] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A harmful gas detection device, characterized in that: It comprises a handheld mechanism (100), a detection mechanism (200) arranged on the handheld mechanism (100), and an external connection mechanism (300) arranged on the detection mechanism (200); The detection mechanism (200) comprises a connecting tube (201) arranged on the handheld mechanism (100), a detector body (202) arranged inside the connecting tube (201), and abutment components (203) arranged at both ends of the connecting tube (201); The external connection mechanism (300) comprises a wheel body (301) and an external connection sleeve (302) arranged on the connecting tube (201), a rotating assembly (303) arranged on the external connection sleeve (302), a staggered assembly (304) arranged on the external connection sleeve (302), and a sleeve ring (305) arranged on the other side of the wheel body (301).

2. The harmful gas detection device according to claim 1, characterized in that: Both ends of the connecting tube (201) are provided with a plurality of air inlet holes (201a), the air inlet holes (201a) are provided with isolation mesh (201b) inside, and an external groove (201c) is provided on one side of the outer wall of the connecting tube (201) close to the air inlet holes (201a).

3. The harmful gas detection device according to claim 2, characterized in that: The abutment assembly (203) comprises a rotating ring (203a) arranged on the inner wall of the connecting tube (201); an embedded groove (203b) is provided at the connection between the rotating ring (203a) and the connecting tube (201); an external plate (203c) is fixedly connected to the connecting tube (201) in the embedded groove (203b); a reset spring (203d) is provided on the external plate (203c); a connecting plate (203e) is provided between the other end of the reset spring (203d) and the rotating ring (203a); and a mesh (203f) is provided on the inner wall of the rotating ring (203a).

4. The harmful gas detection device according to claim 3, characterized in that: The return spring (203d) is arc-shaped and is located in the embedded groove (203b). The rotating ring (203a) is rotatably connected to the connecting tube (201).

5. The harmful gas detection device according to claim 4, characterized in that: The rotating assembly (303) comprises a circular plate (303a) on the external sleeve (302), a built-in groove (303b) arranged on the circular plate (303a), a contraction spring (303c) arranged on the built-in groove (303b), and a docking block (303d) arranged on the contraction spring (303c), wherein the docking block (303d) is provided with a first inclined surface (303e).

6. The harmful gas detection device according to claim 5, characterized in that: The rotating assembly (303) further comprises a driving rod (303f) arranged on the rotating ring (203a), a second inclined surface (303g) arranged on the driving rod (303f), the cross section of the built-in groove (303b) is rectangular, the number of the built-in grooves (303b) is multiple, and the multiple built-in grooves (303b) are distributed in a ring array on the circumference of the circular plate (303a), and the driving rod (303f) corresponds one to one with the docking block (303d).

7. The harmful gas detection device according to claim 6, characterized in that: A connecting pipe (303h) is provided at one end of the circular plate (303a) away from the rotating ring (203a), and an arc block (303i) is fixedly connected to the other end of the connecting pipe (303h), and the connecting pipe (303h) passes through the arc block (303i).

8. The harmful gas detection device according to claim 7, characterized in that: The staggered assembly (304) comprises a contact cover (304a) arranged on one side of the arc block (303i), a plurality of air inlet pipes (304b) are arranged on the contact cover (304a), a guide box (304c) is arranged at the end of the air inlet pipe (304b), and the plurality of air inlet pipes (304b) are connected via a fixing ring (304d); The sleeve ring (305) is provided with a sealing ring (304e) that fits the external groove (201c), and a notch (304f) is provided on the sleeve ring (305).

9. The harmful gas detection device according to claim 8, characterized in that: The plurality of air inlet pipes (304b) are distributed on the contact cover (304a) in a circular array, and the notch (304f) is matched with the air inlet hole (201a).

10. The harmful gas detection device according to claim 8 or 9, characterized in that: The hand-held mechanism (100) comprises a support rod (101) arranged on the connecting tube (201), a handle (102) arranged at the other end of the support rod (101), and a folding leg (103) arranged at the bottom of the support rod (101).

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