Spark collecting device

Abstract

The invention relates to the technical field of building construction, and discloses a spark collecting device. The spark collecting device comprises a support and fireproof cloth. The support comprises a main framework and at least three auxiliary frameworks. One end of each of the at least three auxiliary frameworks is rotationally connected to one end of the main framework by taking a direction perpendicular to the axis of the main framework as a rotating axis, so that each auxiliary framework is in a radial unfolding state or a folding state relative to the main framework; the fireproof cloth is laid on the partial side faces, away from the main framework, of the auxiliary frameworks and detachably connected relative to the auxiliary frameworks. The main framework and the auxiliary frameworks can stretch and contract in the axis direction of the main framework and the auxiliary frameworks. When sparks are collected, laying of the fireproof cloth is not affected by the construction space, so that the laying process is simpler, and operation is more convenient; moreover, because the fireproof cloth can receive the sparks splashed from the operation point in a close range, the collection efficiency of the sparks can be greatly improved, and equipment around the operation point can be reliably protected.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a spark collecting device. Background Art

[0002] Construction sites often require hot work during equipment replacement or emergency repairs, which can create complex environments. For example, welding and cutting large water-cooled air conditioning pipes in a communications room requires work within the confined space of the room, with the air conditioner operating during the process. To prevent safety hazards from sparks from welding and cutting, fire blankets and iron plates must be laid at the work site the following week. Due to the narrow construction space, laying these fire blankets and iron plates is difficult, cumbersome, and inconvenient. Furthermore, these fire blankets and iron plates are inefficient in collecting sparks, making it difficult to reliably protect equipment surrounding the construction site.

[0003] Therefore, there is an urgent need for a spark collection device that is easy to lay, easy to operate, and has high spark collection efficiency. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a spark collection device that is easy to install, easy to operate, and has high spark collection efficiency.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a spark collection device, comprising: a bracket and a fireproof cloth; the bracket comprises a main frame and at least three sub-frames; wherein, one end of at least three of the sub-frames is rotatably connected to one end of the main frame with a direction perpendicular to the axis of the main frame as the rotation axis, so that each of the sub-frames is in a radially expanded state or a folded state relative to the main frame; the fireproof cloth is laid on the side surface of each of the sub-frames away from the main frame, and is detachably connected relative to the sub-frames; and the main frame and each of the sub-frames can be extended and contracted along their axial directions respectively.

[0006] Compared with the prior art, the embodiment of the present invention is that when sparks need to be collected, each sub-frame is rotated so that each sub-frame is in a radially expanded state relative to the main frame, and then the fireproof cloth is laid on each sub-frame. Then, the spark collection device is placed around the work point to start the spark collection process. During this process, the laying of the fireproof cloth is not affected by the construction space. In addition, since the spark collection device can be moved with the position of the work point, the expansion angle of each sub-frame relative to the main frame can be adjusted according to the space requirements of the work point, and each sub-frame and the main frame can be extended and retracted along their axis, by adjusting the position of the spark collection device, the expansion angle of each sub-frame relative to the main frame, and the length of each sub-frame and the main frame, the fireproof cloth can be closely received by the sparks flying from the work point, thereby greatly improving the spark collection efficiency, so as to provide reliable protection for the equipment around the work point, and is convenient to lay and operate.

[0007] In addition, the spark collection device further includes a slider and at least three support frames, wherein the slider is slidably connected to the main frame along the axis of the main frame, and the main frame is provided with a first locking member, and the slider is provided with a first matching member, wherein the first locking member and the first matching member cooperate to place the slider in a locked state or a sliding state relative to the main frame; with a direction perpendicular to the axis of the main frame as the rotation axis, one end of each support frame is rotatably connected to the slider, and the other end is rotatably connected to the corresponding sub-frame. In this way, the support frame can support the sub-frame, thereby improving the stability of the sub-frame when the fireproof cloth is laid on each sub-frame in a radially expanded state; the arrangement of the first locking member and the first matching member enables the support frame to support the sub-frame at different expansion angles relative to the main frame, thereby improving the reliability of the spark collection device; and this arrangement only requires the slider to slide along the axis of the main frame to complete the expansion or contraction of the sub-frame, thereby improving the convenience of operation of the spark collection device.

[0008] Furthermore, the first locking member comprises a plurality of first elastic buckles disposed on the main frame and spaced along its axis, and the first mating member comprises a snap-fitting groove disposed on the slider, which mates with the first elastic buckles. This simple structure allows the slider to be locked and unlocked relative to the main frame, further simplifying the structure of the spark collection device.

[0009] Furthermore, a first circular ring is fixedly connected to the slider's circumference, with the center of the first circular ring located on the axis of the main frame. Each support frame has a first connection hole at one end, which is sleeved onto the first circular ring and rotatable relative to the first circular ring, allowing one end of each support frame to be rotatably connected to the slider. This simple structure allows for the rotational connection between each support frame and the slider, further simplifying the structure of the spark collection device.

[0010] In addition, the spark collection device further includes at least three connecting pins corresponding to the at least three sub-frames; the other end of each support frame is provided with a second connecting hole; corresponding positions on each sub-frame are provided with connecting slots, and each connecting pin is respectively embedded in the corresponding second connecting hole and rotatably connected to the corresponding connecting slot, so that the other end of each support frame is rotatably connected to the corresponding sub-frame. In this way, the rotational connection between each support frame and the corresponding sub-frame can be achieved through a simple structure, making the structure of the spark collection device more simple.

[0011] In addition, a second circular ring is fixedly connected to the circumference of one end of the main frame, with the center of the second circular ring located on the axis of the main frame. A third connecting hole is provided on one end of each of the secondary frames, and each of the third connecting holes is sleeved on the second circular ring and can rotate relative to the second circular ring, so that one end of each of the secondary frames is rotatably connected to one end of the main frame. In this way, the rotational connection between each of the secondary frames and the main frame can be achieved through a simple structure, making the structure of the spark collection device simpler.

[0012] In addition, the main frame and the secondary frame are both rod-shaped structures, and each includes an inner rod and an outer rod. The outer rod is sleeved on the inner rod and can slide relative to the inner rod along its axis. Furthermore, the inner rod is provided with a second locking member, and the outer rod is provided with a second mating member. The second locking member and the second mating member cooperate to place the inner rod in a locked state or a sliding state relative to the outer rod. In this way, the telescopic rod structure formed by the inner and outer rods simplifies the structure of the telescopic main frame and secondary frame. The provision of the second locking member and the second mating member ensures the stability between the inner and outer rods when the main and secondary frames are at different lengths, thereby improving the reliability of the spark collection device.

[0013] Furthermore, the second locking member is a second elastic buckle provided on the inner rod, and the second mating member is a plurality of through-holes sequentially provided along the axis of the outer rod, with the second elastic buckle fitting into each of the through-holes. This simple structure allows the inner rod to be locked and unlocked relative to the outer rod, further simplifying the structure of the spark collection device.

[0014] In addition, each sub-frame is provided with connecting pieces at at least two ends thereof; a plurality of mating pieces are provided on the inner side of the fireproof cloth at positions corresponding to the connecting pieces, and each mating piece is hooked onto the corresponding connecting piece to removably connect the fireproof cloth to the sub-frame. In this way, the fireproof cloth can be securely connected to the sub-frame at its center and at positions surrounding the center via the mating pieces and the connecting pieces.

[0015] In addition, the other end of the main frame is provided with a fixing portion, and the fixing portion is provided with a mounting groove for fixing the spark collection device. In this way, the installation of the mounting groove can facilitate the fixing of the spark collection device to other equipment, thereby improving the convenience of using the spark collection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 2 is a schematic structural diagram of a bracket of a spark collection device provided according to an embodiment of the present invention;

[0018] Figure 2 2 is a schematic structural diagram of a fireproof cloth of a spark collection device provided in accordance with an embodiment of the present invention;

[0019] Figure 3 This is a schematic structural diagram of a main skeleton of a spark collection device provided according to an embodiment of the present invention;

[0020] Figure 4 2. It is a schematic top view of the structure of a secondary frame of a spark collection device provided in an embodiment of the present invention;

[0021] Figure 5 1 is a schematic structural diagram of a spark collection device provided in an embodiment of the present invention in a working scenario;

[0022] Figure 6 is a structural schematic diagram of a spark collection device provided by an embodiment of the present invention in another working scenario;

[0023] Figure 7 is a structural schematic diagram of a spark collection device provided in another working scenario according to an embodiment of the present invention;

[0024] Figure 8 This is a structural schematic diagram of a spark collection device provided according to an embodiment of the present invention in another working scenario.

[0025] Reference numerals:

[0026] 10: bracket;

[0027] 110: Main frame; 111: First elastic buckle; 112: Second ring; 113: Fixing portion; 1131: Mounting slot;

[0028] 120: sub-frame; 121: connecting piece;

[0029] 130: supporting frame;

[0030] 140: slider; 141: first ring;

[0031] 150: inner rod;

[0032] 160: outer rod;

[0033] 20: Fireproof cloth; 210: Matching parts;

[0034] 30: Operation point;

[0035] 40: Equipment needs to be protected. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, each embodiment of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that in each embodiment of the present invention, many technical details are provided to help readers better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented.

[0037] In the embodiments of the present invention, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" to indicate directions or positions are based on the directions or positions shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific direction, or to being constructed or operated in a specific direction.

[0038] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0039] Furthermore, the terms "installed," "set," "provided with," "opened," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0040] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0041] The embodiment of the present invention provides a spark collection device, see Figure 1 and Figure 2 , including: a bracket 10 and a fireproof cloth 20; the bracket 10 includes a main frame 110 and at least three sub-frames 120; wherein, one end of the at least three sub-frames 120 is rotatably connected to one end of the main frame 110 with a direction perpendicular to the axis of the main frame 110 as the rotation axis, so that each sub-frame 120 is in a radially expanded state or a folded state relative to the main frame 110; the fireproof cloth 20 is laid on the side surface of each sub-frame 120 away from the main frame 110, and is detachably connected to the sub-frame 120; and the main frame 110 and each sub-frame 120 can be extended and contracted along their axial directions respectively.

[0042] Compared to the prior art, the present invention allows spark collection to be performed by rotating the sub-frames 120 so that they are radially deployed relative to the main frame 110. The fireproofing sheet 20 is then laid on the sub-frames 120, and the spark collection device is placed around the work site to begin the spark collection process. During this process, the placement of the fireproofing sheet 20 is unaffected by the construction space. Furthermore, because the spark collection device can be moved with the work site, the deployment angle of each sub-frame 120 relative to the main frame 110 can be adjusted to meet the space requirements of the work site, and both the sub-frames 120 and the main frame 110 are extendable along their axes, the fireproofing sheet 20 can be adjusted to catch sparks from the work site at close range by adjusting the position of the spark collection device, the deployment angle of each sub-frame 120 relative to the main frame 110, and the length of each sub-frame 120 and the main frame 110. This significantly improves spark collection efficiency, providing reliable protection for equipment surrounding the work site. Furthermore, the installation and operation of the fireproofing sheet 20 are both convenient and easy.

[0043] The number of sub-skeletons 120 included in the bracket 10 can be three, six, twelve, eighteen, etc.; the rotation angle of each sub-skeleton 120 relative to the main skeleton 110 is any angle between 0° and 180°, and the specific rotation angle can be 30°, 60°, 90°, 120°, etc., which can be set according to actual design and usage requirements, and this embodiment does not make specific restrictions on this.

[0044] Each sub-frame 120 can be rotatably connected to one end of the main frame 110 through a rotating shaft structure. Specifically, a pin extending perpendicular to the axis of each sub-frame 120 can be provided at one end of each sub-frame 120, and a connecting portion is provided at one end of the main frame 110. The connecting portion is provided with at least three grooves that cooperate with the pins of each sub-frame 120. The pins are interference fit in the grooves, so that each sub-frame 120 is fixed to one end of the main frame 110 when not subject to external force, and rotates relative to the main frame 110 with the corresponding pin as the rotating shaft when subjected to external force of downward pressure or upward lifting, thereby allowing the sub-frames 120 to be at different deployment angles relative to the main frame 110. It should be noted that under this setting method, the rotation angle of each sub-frame 120 relative to the main frame 110 can be adjusted to any angle according to actual needs.

[0045] Each sub-frame 120 can also be rotatably connected to one end of the main frame 110 through other structures. Figure 1 and Figure 2The spark collection device also includes a slider 140 and at least three support frames 130. The slider 140 is slidably connected to the main frame 110 along the axial direction of the main frame 110, and a first locking member is provided on the main frame 110. The slider 140 is provided with a first matching member 210. The first locking member and the first matching member 210 cooperate so that the slider 140 is in a locked state or a sliding state relative to the main frame 110; with the direction perpendicular to the axis of the main frame 110 as the rotation axis, one end of each support frame 130 is rotatably connected to the slider 140, and the other end is rotatably connected to the corresponding sub-frame 120. In this way, the support skeleton 130 can support the sub-skeleton 120, so as to improve the stability of the sub-skeleton 120 in supporting the fireproof cloth 20 when the fireproof cloth 20 is laid on each sub-skeleton 120 in a radially expanded state; the setting of the first locking member and the first matching member 210 enables the support skeleton 130 to support the sub-skeleton 120 when the sub-skeleton 120 is at different expansion angles relative to the main skeleton 110, thereby improving the reliability of the spark collection device; and, this setting method only requires the slider 140 to slide along the axial direction of the main skeleton 110 to complete the expansion or contraction of the sub-skeleton 120, thereby improving the convenience of operation of the spark collection device. It should be noted that after the rotation angle of each sub-skeleton 120 is adjusted relative to the main skeleton 110, the fixation of each sub-skeleton 120 relative to the main skeleton 110 is achieved by the first locking member and the first matching member 210. Therefore, under this setting, the rotation angle of each sub-skeleton 120 relative to the main skeleton 110 is controlled by the position and number of the first locking member and the first matching member 210.

[0046] Specifically, the shape of the slider 140 can be a cube, a cuboid, a sphere, etc., which can be set according to actual needs. In addition, a handle can be provided on the slider 140 to facilitate the operator to move the slider 140.

[0047] Furthermore, the first locking member is a plurality of first elastic snaps 111 disposed on the main frame 110 and spaced apart along its axis. The first mating member 210 is a snap-fitting groove (not shown) disposed on the slider 140, which mates with the first elastic snaps 111. This simple structure allows the slider 140 to be locked and unlocked relative to the main frame 110, further simplifying the structure of the spark collection device. Furthermore, the first locking member and the first mating member 210 may also employ other locking structures, which can be specifically configured based on actual design and usage requirements.

[0048] Furthermore, a first circular ring 141 is fixedly connected to the circumference of the slider 140, with the center of the first circular ring 141 located on the axis of the main frame 110. Each support frame 130 is provided with a first connection hole at one end. Each first connection hole is sleeved on the first circular ring 141 and can rotate relative to the first circular ring 141, so that one end of each support frame 130 is rotatably connected to the slider 140. In this way, the rotational connection between each support frame 130 and the slider 140 can be achieved through a simple structure, making the structure of the spark collection device even simpler.

[0049] Specifically, the first ring 141 can be fixed to the outer circumference of the slider 140 to facilitate installation between the first ring 141 and the slider 140. Alternatively, a groove adapted to the first ring 141 can be provided on the outer circumference of the slider 140, and the first ring 141 can be embedded in the groove to achieve a more compact fit between the first ring 141 and the slider 140. It should be noted that a gap exists between the first ring 141 and the slider 140 at least where it fits into each first connection hole, to prevent the slider 140 from interfering with the rotation of the support frames 130.

[0050] Furthermore, the spark collection device includes at least three connecting pins (not shown) corresponding to the at least three sub-frames 120. The other end of each support frame 130 is provided with a second connecting hole. Corresponding positions on each sub-frame 120 are provided with connecting slots. Each connecting pin is embedded in the corresponding second connecting hole and rotatably connected to the corresponding connecting slot, so that the other end of each support frame 130 is rotatably connected to the corresponding sub-frame 120. In this way, the rotational connection between each support frame 130 and the corresponding sub-frame 120 can be achieved through a simple structure, making the structure of the spark collection device even simpler.

[0051] Specifically, a protrusion can be set at a corresponding position on each sub-frame 120, and a connecting groove is formed on the protrusion; the connecting groove can also be directly formed on each sub-frame 120, which can be specifically set according to actual needs.

[0052] Furthermore, a second circular ring 112 is fixedly connected to the circumference of one end of the main frame 110, with the center of the second circular ring 112 located on the axis of the main frame 110. A third connecting hole is provided on one end of each sub-frame 120. Each third connecting hole is sleeved on the second circular ring 112 and can rotate relative to the second circular ring 112, so that one end of each sub-frame 120 is rotatably connected to one end of the main frame 110. In this way, the rotational connection between each sub-frame 120 and the main frame 110 can be achieved through a simple structure, making the structure of the spark collection device simpler.

[0053] Specifically, the second ring 112 can be fixed to the outer circumference of one end of the main frame 110 to facilitate installation between the second ring 112 and the main frame 110. Alternatively, a groove adapted to the second ring 112 can be provided on the outer circumference of one end of the main frame 110, and the second ring 112 can be embedded in the groove to make the second ring 112 and one end of the main frame 110 more compact. It should be noted that there is a gap between the second ring 112 and one end of the main frame 110 at least at the position where the third connecting holes are inserted, so as to prevent the main frame 110 from interfering with the rotation of the sub-frames 120.

[0054] Further, see Figure 3 and Figure 4 The main frame 110 and the secondary frame 120 are both rod-shaped structures, and each includes an inner rod 150 and an outer rod 160. The outer rod 160 is sleeved on the inner rod 150 and can slide relative to the inner rod 150 along its axis. In addition, the inner rod 150 is provided with a second locking member, and the outer rod 160 is provided with a second matching member 210. The second locking member and the second matching member 210 cooperate to place the inner rod 150 in a locked state or a sliding state relative to the outer rod 160. In this way, the telescopic rod structure formed by the inner rod 150 and the outer rod 160 simplifies the structure of the telescopic main frame 110 and the secondary frame 120. The provision of the second locking member and the second matching member 210 ensures the stability between the inner rod 150 and the outer rod 160 when the main frame 110 and the secondary frame 120 are at different lengths, thereby improving the reliability of the spark collection device.

[0055] Specifically, the telescopic rod structure of the main frame 110 and the auxiliary frame 120 can be a two-section telescopic structure, a three-section telescopic structure, a four-section telescopic structure, etc., so that the main frame 110 and the auxiliary frame 120 are at different lengths according to different construction scenarios.

[0056] Furthermore, the second locking member is a second elastic buckle (not shown) provided on the inner rod 150, and the second mating member 210 is a plurality of through-holes arranged sequentially along the axis of the outer rod 160, with the second elastic buckle fitting into each through-hole. This simple structure allows the inner rod 150 to be locked and unlocked relative to the outer rod 160, further simplifying the structure of the spark collection device. Furthermore, the second locking member and the second mating member 210 may also be configured as other locking structures, the specific configuration of which can be determined based on actual design and usage requirements.

[0057] See again Figure 2 and Figure 4Each sub-frame 120 is provided with connecting pieces 121 at at least two ends thereof; a plurality of mating pieces 210 are provided on the inner side of the fireproof cloth 20 at positions corresponding to the connecting pieces 121. Each mating piece 210 is hooked onto a corresponding connecting piece 121 to detachably connect the fireproof cloth 20 to the sub-frame 120. In this way, the mating pieces 210 and the connecting pieces 121 securely connect the fireproof cloth 20 to the sub-frame 120 at its center and around the center.

[0058] Specifically, the number of connectors 121 provided on each sub-frame 120 can be two, three, six, eight, etc., and the multiple connectors 121 are arranged sequentially and spaced apart along the axis of the sub-frame 120. Furthermore, to prevent the connectors 121 from interfering with the extension and retraction of the inner rod 150 of the sub-frame 120 relative to the outer rod 160, the connector 121 is provided only on the end of the inner rod 150 of the sub-frame 120 that is capable of extending relative to the outer rod 160.

[0059] More specifically, the connecting member 121 can be a hook, a magnet or other structure, and the matching member 210 can be set to a connecting hole, a magnetic member or other structure accordingly, and the types of the multiple connecting members 121 on each sub-frame 120 can be the same or different, and can be set according to the actual design and use requirements. In addition, the connecting member 121 and the matching member 210 can be set only between the center position of the fireproof cloth 20 and one end of the main frame 110 connected to each sub-frame 120, and a plurality of caps adapted to the free ends of each sub-frame 120 can be set on the outer peripheral side of the fireproof cloth 20, and the number of caps is greater than the number of sub-frames 120, so that when each sub-frame 120 is at different angles relative to the main frame 110, the free end of the sub-frame 120 can be flexibly connected to the different caps on the fireproof cloth 20, thereby allowing the fireproof cloth 20 to be stretched as straight as possible.

[0060] See again Figure 1 and Figure 3 The other end of the main frame 110 is provided with a fixing portion 113, and the fixing portion 113 is provided with a mounting groove 1131 for fixing the spark collection device. In this way, the installation of the mounting groove 1131 can facilitate the fixing of the spark collection device to other equipment, thereby improving the convenience of using the spark collection device.

[0061] Specifically, the cross-sectional shape of the mounting groove 1131 may be rectangular, U-shaped, etc., and the fixing portion 113 may also be provided with other structures such as buckles and clips for facilitating the installation of the spark collection device. The specific configuration may be based on actual design and usage requirements, and this embodiment does not impose any specific limitations on this.

[0062] The spark collection device can be widely used in a variety of construction scenarios, see Figure 5-Figure 8The spark collection device can adjust the angle of each sub-frame 120 relative to the main frame 110 to any desired angle, such as 30°, 60°, 90°, 120°, etc., according to the specific position and size of the equipment 40 to be protected and the work point 30 in the actual construction scenario, and adjust the length of the main frame 110 and the sub-frame 120 to the required length, so that the fireproof cloth 20 can receive the sparks flying from the work point 30 at a close distance, thereby greatly improving the spark collection efficiency and providing reliable protection for the equipment 40 to be protected around the work point 30.

[0063] The above is a detailed introduction to the "subject name" provided for the implementation mode of the present invention. Specific examples are used herein to illustrate the principles and implementation modes of the present invention. The description of the above implementation modes is only used to help understand the idea of ​​the present invention. There may be changes in the specific implementation modes and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A spark collection device, characterized in that: include: Bracket and fireproof cloth; the bracket includes a main frame and at least three sub-frames; wherein, One end of at least three of the sub-frames is rotatably connected to one end of the main frame with a direction perpendicular to the axis of the main frame as a rotation axis, so that each of the sub-frames is in a radially expanded state or a collapsed state relative to the main frame; The fireproof cloth is laid on the side surface of each of the auxiliary frames away from the main frame and is detachably connected to the auxiliary frames; and The main frame and each of the auxiliary frames can be extended and contracted along their axial directions respectively.

2. The spark collection device according to claim 1, characterized in that The main frame further comprises a slider and at least three supporting frames, wherein the slider is slidably connected to the main frame along the axis direction of the main frame, and the main frame is provided with a first locking member, and the slider is provided with a first matching member, and the first locking member and the first matching member cooperate to put the slider in a locked state or a sliding state relative to the main frame; With the direction perpendicular to the axis of the main frame as the rotation axis, one end of each support frame is rotatably connected to the slider, and the other end is rotatably connected to the corresponding sub-frame.

3. The spark collection device according to claim 2, characterized in that: The first locking member is a plurality of first elastic buckles arranged on the main frame and spaced apart along the axial direction thereof; the first matching member is a snap-fitting groove arranged on the slider, and the snap-fitting groove is adapted to the first elastic buckle.

4. The spark collection device according to claim 2, characterized in that A first circular ring is fixedly connected to the circumference of the slider, and the center of the first circular ring is located on the axis of the main frame; A first connection hole is provided at one end of each of the support frames. Each of the first connection holes is sleeved on the first ring and can rotate relative to the first ring, so that one end of each of the support frames is rotatably connected to the slider.

5. The spark collection device according to claim 2, characterized in that: It also includes at least three connecting pins corresponding to the at least three sub-frames one by one; The other end of each supporting frame is provided with a second connecting hole; the corresponding position on each sub-frame is provided with a connecting groove, and each connecting pin is embedded in the corresponding second connecting hole and rotatably connected to the corresponding connecting groove, so that the other end of each supporting frame is rotatably connected to the corresponding sub-frame.

6. The spark collection device according to claim 2, characterized in that: A second circular ring is fixedly connected to the circumference of the one end of the main frame, and the center of the second circular ring is located on the axis of the main frame; A third connecting hole is provided on the one end of each sub-skeleton, and each third connecting hole is sleeved on the second ring and can rotate relative to the second ring, so that the one end of each sub-skeleton is rotatably connected to the one end of the main skeleton.

7. The spark collection device according to any one of claims 1 to 6, characterized in that: The main frame and the auxiliary frame are both rod-shaped structures, and both the main frame and the auxiliary frame include inner rods and outer rods; The outer rod is sleeved on the inner rod and can slide relative to the inner rod along its axis; and The inner rod is provided with a second locking piece, and the outer rod is provided with a second matching piece. The second locking piece and the second matching piece cooperate with each other so that the inner rod is in a locked state or a sliding state relative to the outer rod.

8. The spark collection device according to claim 7, characterized in that: The second locking member is a second elastic buckle provided on the inner rod, and the second matching member is a plurality of through holes provided in sequence along the axial direction of the outer rod, and the second elastic buckle is adapted to each of the through holes.

9. The spark collection device according to any one of claims 1 to 6, characterized in that: Each of the sub-frames is provided with connecting pieces at least at both ends thereof; A plurality of matching pieces are provided on the inner side surface of the fireproof cloth at positions corresponding to the respective connecting pieces, and each matching piece is hooked on the corresponding connecting piece to detachably connect the fireproof cloth to the secondary frame.

10. The spark collection device according to any one of claims 1 to 6, characterized in that: The other end of the main frame is provided with a fixing portion, and the fixing portion is provided with a mounting groove for fixing the spark collection device.

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