Ash cooling device

Abstract

The application belongs to the technical field of cremation devices, and specifically discloses a bone ash cooling device, which comprises a rail frame, a hydraulic driving device, a transport vehicle, a bearing disc, a fan and a suction hood. The hydraulic driving device is provided with two groups and is respectively arranged on the two sides of the outer wall of the rail frame. The telescopic ends of the two groups of hydraulic driving devices are connected with one side of the outer wall of the transport vehicle. The transport vehicle slides above the outer part of the rail frame. The fan is arranged on one side of the rail frame. The suction port of the fan is connected with an L-shaped hard pipe. The exhaust port of the fan is connected with an external connecting pipe. The outer part of the L-shaped hard pipe is connected with a telescopic piece through a clamping mechanism. The telescopic end of the telescopic piece is fixedly connected with an L-shaped frame. The bottom end of the L-shaped frame is connected with the top of the suction hood through a clamping piece. The application can guide airflow to penetrate the bone ash pile obliquely through the swing flow blocking mechanism, eliminate the cooling dead zone and realize efficient and sufficient cooling.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cremation devices, and specifically discloses a bone ash cooling device. BACKGROUND

[0002] The temperature of bone ash generated after the cremation of a corpse is extremely high, and can reach several hundred degrees. In view of the safety and efficiency of the subsequent embalming process (such as being put into a bone ash box), the bone ash must be cooled. At present, the industry generally uses a wind-cooled cooling device, and the basic principle is to form a negative pressure above the bone ash container through a suction hood, so as to draw away hot air and introduce surrounding cold air, thereby achieving the purpose of cooling.

[0003] However, the bone ash cooling device in the prior art has obvious defects in structure design and functional principle, resulting in low cooling efficiency, uneven effect, and potential risks.

[0004] At present, the air flow organization mode of the common suction hood is mainly a horizontal suction mode towards the center. That is, the cold air flows into the container horizontally from the edge, and is drawn away upwards after converging at the center of the container. This air flow mode has inherent technical disadvantages, and the air flow will preferentially pass through the path with the smallest resistance, that is, the edge and surface layer of the container. This results in a large amount of cold air flowing through only the surface layer of the bone ash and the vicinity of the container wall, and failing to fully penetrate and replace the high-temperature air inside the bone ash pile. In the central bottom area of the bone ash container, due to the difficulty of the horizontal air flow in effectively covering and penetrating, a continuous high-temperature "core heat island" or "cooling dead zone" is easily formed. The cooling speed of the bone ash in this area is much slower than that of the surrounding and surface layer.

[0005] In addition, when the bone ash is naturally accumulated, there are a large number of small pores inside. The air in these pores is a poor conductor of heat, and forms an effective heat insulation layer. Simply relying on external air flow suction is difficult to break through this "heat insulation barrier", and the speed of heat conduction from the inside to the outside is very slow.

[0006] Therefore, the application provides a bone ash cooling device to solve the above-mentioned defects. SUMMARY

[0007] The bone ash cooling device aims at solving the problems in the background art, and comprises a rail frame, hydraulic drive devices, a transport vehicle, a bearing disc, a fan and a suction hood, the hydraulic drive devices are arranged in two groups and are respectively installed on the outer walls of the rail frame, the two groups of hydraulic drive devices are connected with one side of the outer wall of the transport vehicle, the transport vehicle slides above the outer wall of the rail frame, the fan is arranged on one side of the rail frame, an L-shaped hard pipe is connected with the suction inlet of the fan, an external connecting pipe is connected with the exhaust outlet of the fan, a clamping mechanism is arranged on the outer wall of the L-shaped hard pipe, an extension piece is connected with the clamping mechanism, an L-shaped frame is fixedly installed on the extension piece, a clamping piece is arranged on the bottom end of the L-shaped frame, a suction hood is connected with the clamping piece, a flexible hose is connected with the end of the L-shaped hard pipe away from the fan, the inner wall of the flexible hose is connected with the inner wall of the suction hood through a bend pipe, slide rail mechanisms are symmetrically arranged on the outer wall of the suction hood, a connecting rod is fixedly installed on the upper surface of one side of the slide rail mechanism, a swing flow blocking mechanism is arranged above the connecting rod, and a lever is installed on the lower surface of the connecting rod.

[0008] In the above technical solution, further, the clamping mechanism comprises a clamping sleeve arranged on the outer wall of the L-shaped hard pipe, fixed plates are fixedly installed on the outer wall of the clamping sleeve, and the extension piece is arranged in the fixed plate.

[0009] In the above technical solution, further, the extension piece comprises a first hydraulic rod fixedly installed on the inner wall of the fixed plate, and the first hydraulic rod is connected with the upper surface of the L-shaped frame.

[0010] In the above technical solution, further, the slide rail mechanism comprises a guide frame fixedly installed on the outer wall of the suction hood, a sliding groove is arranged in the guide frame, a slide rod is slidably installed in the sliding groove, and the connecting rod is fixedly installed on the upper surface of one side of the slide rod.

[0011] In the above technical solution, further, a plurality of extension hydraulic rods are fixedly installed in one end of the guide frame, and the extension hydraulic rods are fixedly connected with the outer wall of one side of the slide rod.

[0012] In the above technical solution, further, the swing flow blocking mechanism comprises a connecting seat fixedly installed on the connecting rod, a second rotating shaft is rotatably installed in the lower part of the connecting seat, a first rotating shaft is rotatably installed in the upper part of the connecting seat, a second gear is fixedly sleeved with one end of the outer wall of the second rotating shaft, a first gear is fixedly sleeved with one end of the outer wall of the first rotating shaft, the first gear is meshed with the second gear, a fixed seat is fixedly sleeved with the outer wall of one side of the first rotating shaft away from the first gear, and an arc-shaped plate is fixedly installed on the upper part of the fixed seat.

[0013] Further in the technical scheme, the arc-shaped plate has slope plates extending downward at both sides, the motor is fixedly installed at the end of the second rotating shaft away from the second gear, the protective shell is fixedly installed outside the motor, and the protective shell is fixedly installed on the outer wall of the connecting seat.

[0014] Further in the technical scheme, the clamping member comprises two installation rods fixedly installed at both sides of the top of the air suction cover, U-shaped pipes are fixedly installed at both sides of the interiors of the two installation rods, the L-shaped frame is fixedly sleeved at the outer middle of the U-shaped pipe at one end, and reinforcing frames are fixedly installed on the outer walls of both sides close to the corners of the L-shaped frame.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. The multiple poking rods arranged on the air suction cover and capable of synchronously moving with the air suction cover can deeply penetrate the bone ash surface layer and horizontally move during the cooling process, thereby effectively breaking the heat insulation air layer formed by the static accumulation inside the bone ash, exposing the high-temperature part deeply buried inside, greatly increasing the contact area and air exchange efficiency of the bone ash and the cooling air flow, and fundamentally overcoming the technical obstacle that the air flow alone is difficult to overcome the heat insulation effect of the accumulated body.

[0017] 2. The motor, the first gear, the second gear, the first rotating shaft and the second rotating shaft can drive the baffle to swing, and the baffle is combined with the horizontally movable slide rod, thereby breaking the traditional single and fixed horizontal centripetal air flow mode. The periodic swing of the baffle can continuously change the air flow direction and pressure distribution inside the cover, forming a dynamic and dead-zone-free three-dimensional air flow field, forcing the cold air to penetrate each layer of the bone ash pile, especially the central bottom area, thereby solving the problem of local overheating caused by uneven air flow distribution and ensuring the uniform and rapid cooling of the whole bone ash.

[0018] 3. The relative position of the swing baffle mechanism inside the air suction cover and the bone ash can be accurately adjusted through the cooperation of the telescopic mechanism and the sliding mechanism, and the size and bone ash accumulation height of various bone ash containers can be adapted through the cooperation of the adjustable air flow guide structure, without the need for manual adjustment of the bone ash shape, which improves the operation convenience and avoids the possible damage to the bone ash caused by manual contact. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the overall structure of the present application;

[0020] Figure 2 It is another angle schematic view of the overall structure of the present application;

[0021] Figure 3 It is a schematic view of the inner side part structure of the air suction cover of the present application;

[0022] Figure 4The schematic view of the connecting structure between the air suction cover and the clamping member of the present application;

[0023] Figure 5 The schematic view of the connecting structure between the arc-shaped plate, slope plate, sliding rod and guide frame of the present application;

[0024] Figure 6 The schematic view of the connecting structure between the arc-shaped plate, slope plate, sliding rod and guide frame of the present application from another angle;

[0025] Figure 7 The schematic view of the connecting structure between the sliding rod, push rod, motor and connecting rod of the present application.

[0026] In the figure: 1, track frame; 2, hydraulic drive device; 3, transport vehicle; 4, bearing disc; 5, air suction cover; 6, fan; 7, external pipe; 8, L-shaped hard pipe; 9, fixed plate; 10, sleeve; 11, first hydraulic rod; 12, flexible hose; 13, L-shaped frame; 14, U-shaped pipe; 15, mounting rod; 16, sliding rod; 17, elbow pipe; 18, push rod; 19, arc-shaped plate; 20, slope plate; 21, multi-section flexible hydraulic rod; 22, guide frame; 23, connecting seat; 24, first gear; 25, first rotating shaft; 26, protective shell; 27, connecting rod; 28, second gear; 29, motor; 30, second rotating shaft; 31, reinforcing frame; 32, fixed seat; 33, sliding groove. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0028] In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed below.

[0029] As Figures 1-7The bone ash cooling device shown comprises a rail frame 1, a hydraulic drive device 2, a transport vehicle 3, a bearing disc 4, a fan 6 and a suction hood 5, the hydraulic drive device 2 is provided with two groups and is mounted on the two sides of the outer wall of the rail frame 1, the two groups of hydraulic drive devices 2 are connected with one side of the outer wall of the transport vehicle 3, the transport vehicle 3 slides on the outer top of the rail frame 1, the fan 6 is arranged on one side of the rail frame 1, an L-shaped hard pipe 8 is communicated and mounted on the air inlet of the fan 6, an external connecting pipe 7 is communicated and mounted on the air outlet of the fan 6, a stretchable piece is correspondingly connected with the outer top of the L-shaped hard pipe 8 through a clamping mechanism arranged on the outer top, an L-shaped frame 13 is fixedly mounted on the stretchable end of the stretchable piece, the bottom end of the L-shaped frame 13 is connected with the top of the suction hood 5 through a clamping piece arranged thereon, a stretchable hose 12 is connected with the end of the L-shaped hard pipe 8 away from the fan 6, the inner bottom of the stretchable hose 12 is communicated with the inner part of the suction hood 5 through two bend pipes 17 arranged in communication on the two sides, slide rail mechanisms are symmetrically and crossly mounted on the two sides of the outer wall of the suction hood 5, a connecting rod 27 is fixedly mounted on the upper surface of one side of the slide rail mechanism, a swing flow blocking mechanism is arranged above the connecting rod 27, and a poking rod 18 is installed on the lower surface of the connecting rod 27 along the horizontal direction at equal distances;

[0030] In the embodiment, the recesses of the rail frame 1 are arranged in the inner part of the transport vehicle 3, bearings are arranged at the recesses, it is a common industrial transport mechanism, the fan 6 is a low-noise centrifugal fan 6 device, and the external connecting pipe 7 of the air outlet is connected with the outside through an external pipeline to avoid the backflow of hot air.

[0031] The stretchable hose 12 can be deformed and moved up and down with the suction hood 5 to avoid the pipeline from being pulled and torn.

[0032] Specifically, during operation, the transport vehicle 3 is moved along the rail frame 1 under the pushing of the hydraulic drive device 2, and the bearing disc 4 is sent to the working position below the suction hood 5. After the fan 6 is started, hot air is sucked through the L-shaped hard pipe 8 and the stretchable hose 12, and the poking rod 18 mechanically stirs the bone ash, the swing flow blocking mechanism changes the air distribution, and three-dimensional and uniform cooling is realized.

[0033] The clamping mechanism comprises a sleeve clamp 10 which is sleeved on the outer top of the L-shaped hard pipe 8, fixed plates 9 are fixedly mounted on the two sides of the outer wall of the sleeve clamp 10, and a stretchable piece is arranged in the inner part of the fixed plate 9. The stretchable piece comprises a first hydraulic rod 11 which is fixedly mounted on the inner top of the fixed plate 9, and the stretchable end of the first hydraulic rod 11 is connected with the upper surface of the L-shaped frame 13.

[0034] In the embodiment, the sleeve clamp 10 is made of stainless steel and is sleeved on the L-shaped hard pipe 8, and then the first hydraulic rod 11 is supported by the two fixed plates 9, so that the stretching and driving of the first hydraulic rod 11 to lift and lower the suction hood 5 is more stable.

[0035] The sliding rail mechanism comprises a guide frame 22 fixedly installed on one side of the outer wall of the air suction hood 5, a sliding groove 33 is formed in the guide frame 22, a sliding rod 16 is slidably installed in the sliding groove 33, a connecting rod 27 is fixedly installed on the upper surface of one side of the sliding rod 16, a plurality of telescopic hydraulic rods 21 are fixedly installed at one end of the guide frame 22, and the telescopic ends of the plurality of telescopic hydraulic rods 21 are fixedly connected with the outer wall of one side of the sliding rod 16.

[0036] In the embodiment, the sliding rod 16 slides along the sliding groove 33 of the guide frame 22, the connecting rod 27 connects the sliding rod 16 and the poking rod 18 into an integral whole, and when the plurality of telescopic hydraulic rods 21 drive the sliding rod 16 to move, the poking rod 18 moves horizontally to gently stir the cremated remains, breaks the thermal insulation layer of the pores, and thus facilitates better heat absorption of the air suction hood 5.

[0037] The swinging flow blocking mechanism comprises a connecting seat 23 fixedly installed above the connecting rod 27, a second rotating shaft 30 rotatably installed at the lower part in the connecting seat 23, a first rotating shaft 25 rotatably installed at the upper part in the connecting seat 23, a second gear 28 fixedly sleeved on the outer part of one end of the second rotating shaft 30, a first gear 24 fixedly sleeved on the outer part of one end of the first rotating shaft 25, the first gear 24 and the second gear 28 are in meshing connection, a fixing seat 32 fixedly sleeved on the outer part of one side of the first rotating shaft 25 away from the first gear 24, an arc-shaped plate 19 fixedly installed above the fixing seat 32, slope plates 20 downwardly extended at both sides of the arc-shaped plate 19, a motor 29 fixedly installed at one end of the second rotating shaft 30 away from the second gear 28, a protective shell 26 fixedly sleeved on the outer part of the motor 29, and the protective shell 26 is fixedly installed on the outer wall of the connecting seat 23.

[0038] In the embodiment, when the elbow pipe 17 is strongly sucked, the two sides of the arc-shaped plate 19 symmetrically cross and move to one end away from each other, so that the elbow pipe 17 concentrates on the two sides of the cremated remains, and then the arc-shaped plate 19 is moved to be directly below the elbow pipe 17, at this time, the motor 29 drives the second rotating shaft 30 to rotate, the second gear 28 meshes to drive the first rotating shaft 25 to rotate, the first rotating shaft 25 drives the arc-shaped plate 19 to swing through the fixing seat 32, the airflow trajectory in the air suction hood 5 is changed, the cold air is guided to penetrate the cremated remains, at the same time, the problem of uneven cold and hot caused by concentrated adsorption of hot air at the fixed position is avoided, and when the arc-shaped plate 19 swings, the slope plates 20 at both sides of the arc-shaped plate 19 swing synchronously, the airflow guiding range is expanded, the edge to the center of the cremated remains is covered, and airflow omission is avoided.

[0039] The protective shell 26 arranged outside the motor 29 can isolate high temperature and protect the motor 29.

[0040] The clamping piece comprises two installation rods 15 fixedly installed at the top of both sides of the air suction hood 5, U-shaped pipes 14 fixedly installed at both sides in the two installation rods 15, L-shaped frames 13 fixedly sleeved on the outer part of the middle of the U-shaped pipes 14, and reinforcing frames 31 fixedly installed on the outer walls of both sides close to the corners of the L-shaped frames 13.

[0041] In this embodiment, the L-shaped frame 13 is sleeved on the outside of the U-shaped tube 14 through the internally pre-set hole position, the mounting rod 15 fixes the U-shaped tube 14 and the air suction cover 5, realizes the stable connection of the L-shaped frame 13 and the air suction cover 5, and ensures that the power of the telescopic part can be stably transmitted to the air suction cover 5.

[0042] In conclusion, the present application solves the core technical problems of uneven cooling and low heat exchange efficiency in the background art through the combined action of the three, i.e., the semi-sealing of the air suction cover 5, the continuous air extraction of the fan 6, and the mechanical stirring of the bone ash by the poking rod 18 and the dynamic interference of the internal airflow by the arc-shaped plate 19, realizes the rapid, uniform and safe cooling of the bone ash.

[0043] Working principle: After the vessel for burning bone ash is transported out of the incinerator, it is moved to the bearing disc 4, the transport vehicle 3 is driven by the hydraulic driving device 2 to push the transport vehicle 3 to move along the outside of the rail frame 1 until the bearing disc 4 is accurately transported to the position directly below the air suction cover 5;

[0044] When the bearing disc 4 carries the bone ash to the position below the air suction cover 5, the first hydraulic rod 11 is extended downward, the L-shaped frame 13 is driven to be lowered as a whole, the L-shaped frame 13 drives the air suction cover 5 to be lowered through the clamping part, until the lower edge of the air suction cover 5 is in a gap above the bearing disc 4 (which ensures the negative pressure suction effect and avoids contacting the bone ash), then the fan 6 on one side of the rail frame 1 is started, the air suction port of the fan 6 generates negative pressure through the L-shaped hard pipe 8, the negative pressure is transmitted to the two curved pipes 17 through the telescopic hose 12, and finally acts on the inside of the air suction cover 5; the high-temperature hot gas in the air suction cover 5 is sucked in by the negative pressure, sequentially enters the fan 6 through the curved pipe 17, the telescopic hose 12 and the L-shaped hard pipe 8, and is discharged to a designated area (such as outdoors or a tail gas treatment device) through the external connecting pipe 7 of the air outlet of the fan 6, forming a continuous hot gas flow circulation and preliminarily taking away the surface heat of the bone ash;

[0045] At the same time of air extraction cooling, the motor 29 is energized to operate, and the output end drives the second rotating shaft 30 to rotate; the second gear 28 on the outside of the second rotating shaft 30 is engaged with the first gear 24 on the outside of the first rotating shaft 25, thereby driving the first rotating shaft 25 to rotate synchronously; the first rotating shaft 25 drives the arc-shaped plate 19 to swing around the first rotating shaft 25 through the fixed seat 32, and the slope plates 20 on both sides of the arc-shaped plate 19 swing at the same time; in the swinging process, the arc-shaped plate 19 and the slope plates 20 change the airflow direction in the air suction cover 5, so that the originally horizontally flowing cold air to the center forms a downward inclined airflow under the guidance of the flow blocking structure, accurately penetrates the surface layer of the bone ash pile, and directly reaches the central area of the bearing disc 4, eliminating the cooling dead zone of the traditional device and realizing the synchronous heat exchange of the inside and the surface layer of the bone ash pile;

[0046] The multiple-section telescopic hydraulic rod 21 of the synchronous starting slide rail mechanism pushes the slide rod 16 in the slide groove 33 inside the guide frame 22 to slide; the connecting rod 27 on the upper surface of the slide rod 16 moves along with the slide rod 16, and the stirring rod 18 on the lower surface of the connecting rod 27 stirs the cremated remains in the bearing disc 4 in the horizontal direction, the stirring action breaks the static air insulation layer formed by the pores in the cremated remains, accelerates the heat conduction from the inside to the surface of the cremated remains, cooperates with the air suction, greatly improves the heat exchange efficiency, avoids the problems of surface cooling and internal residual heat of the traditional device, and the like;

[0047] When the temperature of the cremated remains has been sufficiently cooled, the fan 6 stops running, the mechanism resets, the air suction cover 5 is lifted as a whole, finally, the hydraulic drive device 2 is started again, the transport vehicle 3 is connected to the bearing disc 4 and the cremated remains container which have been cooled, and is transported to the working area, and the whole cooling process is completed.

[0048] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A cremation ash cooling device, comprising a rail frame (1), a hydraulic drive device (2), a transport vehicle (3), a support plate (4), a fan (6), and a suction hood (5), characterized in that: Two sets of hydraulic drive devices (2) are provided and installed on both sides of the outer wall of the rail frame (1). The telescopic ends of the two sets of hydraulic drive devices (2) are connected to one side of the outer wall of the transport vehicle (3). The transport vehicle (3) slides on the outside of the rail frame (1). The fan (6) is located on one side of the rail frame (1). The air intake of the fan (6) is connected to an L-shaped rigid pipe (8). The exhaust port of the fan (6) is connected to an external pipe (7). The upper part of the L-shaped rigid pipe (8) is connected to a telescopic component through a clamping mechanism. An L-shaped frame (13) is fixedly installed at the telescopic end of the air suction hood (5). The bottom end of the L-shaped frame (13) is connected to the top of the air suction hood (5) through a set clamping part. The end of the L-shaped rigid pipe (8) away from the fan (6) is connected to a telescopic flexible hose (12). The lower sides of the telescopic flexible hose (12) are connected to the inside of the air suction hood (5) through a connecting bend (17). The outer walls of the air suction hood (5) are symmetrically installed with slide rail mechanisms on both sides. A connecting rod (27) is fixedly installed on the upper surface of one side of the slide rail mechanism. A swing arm is set above the connecting rod (27). The moving flow-blocking mechanism includes a connecting rod (27) with a lever (18) evenly spaced horizontally on its lower surface. The mechanism includes a connecting seat (23) fixedly mounted above the connecting rod (27). A second rotating shaft (30) is rotatably mounted inside the lower part of the connecting seat (23), and a first rotating shaft (25) is rotatably mounted inside the upper part of the connecting seat (23). A second gear (28) is fixedly sleeved on one end of the second rotating shaft (30), and a first gear (24) is fixedly sleeved on one end of the first rotating shaft (25). (24) meshes with the second gear (28). A fixed seat (32) is fixedly sleeved on the side of the first shaft (25) away from the first gear (24). An arc plate (19) is fixedly installed on the top of the fixed seat (32). Slope plates (20) extend downward on both sides of the arc plate (19). A motor (29) is fixedly installed on the end of the second shaft (30) away from the second gear (28). A protective shell (26) is fixedly sleeved on the outside of the motor (29). The protective shell (26) is fixedly installed on the outer wall of the connecting seat (23).

2. The cremated remains cooling device according to claim 1, characterized in that: The clamp mechanism includes a clamp (10) that is fixedly sleeved on the outside of the L-shaped rigid tube (8). Fixing plates (9) are fixedly installed on both sides of the outer wall of the clamp (10). The telescopic component is set inside the fixing plate (9).

3. The cremated remains cooling device according to claim 2, characterized in that: The telescopic component includes a first hydraulic rod (11) fixedly installed inside the upper part of the fixed plate (9), and the telescopic end of the first hydraulic rod (11) is connected to the upper surface of the L-shaped frame (13).

4. A cremated remains cooling device according to claim 1, characterized in that: The slide rail mechanism includes a guide frame (22) fixedly installed on one side of the outer wall of the suction hood (5). A slide groove (33) is provided inside the guide frame (22). A slide rod (16) is slidably installed inside the slide groove (33). The connecting rod (27) is fixedly installed on the upper surface of one side of the slide rod (16).

5. A cremated remains cooling device according to claim 4, characterized in that: Multiple telescopic hydraulic rods (21) are fixedly installed inside one end of the guide frame (22), and the telescopic ends of the multiple telescopic hydraulic rods (21) are fixedly connected to the outer wall of one side of the slide rod (16).

6. A cremated remains cooling device according to claim 1, characterized in that: The mounting component includes mounting rods (15) fixedly installed on both sides of the top of the suction hood (5). U-shaped tubes (14) are fixedly installed on both sides inside the two mounting rods (15). One end of the L-shaped frame (13) is fixedly fitted in the middle of the outside of the U-shaped tube (14). Reinforcing frames (31) are fixedly installed on both outer walls of the L-shaped frame (13) near the corner.

Images