Lifting device for fire safety assessment

Abstract

The utility model relates to the technical field of fire safety assessment, and discloses a lifting device for fire safety assessment, which comprises a bottom plate, a metal balancing weight is fixedly mounted at the bottom of the bottom plate, a lifting mechanism is arranged at the top of the bottom plate, and the lifting mechanism comprises a lifting box and a mounting seat. The lifting box and the mounting base are fixedly connected with the bottom plate, and a servo motor is fixedly mounted at the top of the mounting base. By arranging the lifting mechanism and controlling forward rotation and reverse rotation of the servo motor, the height of the working table can be adjusted, the adjusting range is wide, climbing is convenient, fire fighting equipment of different heights can be evaluated and monitored conveniently, by arranging the positioning mechanism, the working table can be limited, accidental falling of the working table is avoided, and safety is improved; by arranging the lifting mechanism, the detection instrument can be conveyed and can be prevented from falling off, and by arranging the metal balancing weight, the weight of the bottom of the device is increased, and the stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire safety assessment, in particular to a lifting device used for fire safety assessment. Background Art

[0002] In the process of fire safety assessment, inspectors are usually required to stand at a high place with the help of a lifting platform to conduct safety assessment on devices at a high position from the ground. Although the existing lifting platforms used for fire safety assessment can meet people's basic use needs, they have the following defects: first, the device cannot easily switch between walking and docking states, and the device cannot have good stability during docking; second, there is also a defect that it cannot easily transfer objects between the workbench and the ground.

[0003] Chinese patent CN215828305U discloses a lifting platform for fire safety assessment, including a base, a first electric hydraulic telescopic rod, a support pad, an anti-skid pad, a support leg, a walking wheel, a column, a second electric hydraulic telescopic rod, a workbench arranged at the upper end of the output shaft of the second electric hydraulic telescopic rod, a protective fence arranged at the side end of the workbench, an L-shaped mounting frame arranged at the left end of the workbench and extending to the outside of the right end of the workbench, a linear slide arranged at the bottom of the horizontal part of the mounting frame, an electric winch connected to the bottom of the slide seat of the linear slide, a pulling rope arranged on the electric winch and a storage groove arranged at the lower end of the pulling rope, which can enable the device to easily switch between walking and docking states, and enable the device to have good stability during docking, and can also easily realize the mutual transfer of objects between the workbench and the ground, but its lifting range is limited, it is more laborious when climbing, and because the traction rope is easy to shake when winding, the instrument in the storage groove is easy to fall.

[0004] Therefore, those skilled in the art provide a lifting device for fire safety assessment to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to improve the problem that the existing lifting platform for fire safety assessment has limited stability and is inconvenient for transporting instruments, the utility model provides a lifting device for fire safety assessment.

[0006] The utility model provides a lifting device for fire safety assessment, which adopts the following technical solutions:

[0007] A lifting device for fire safety assessment, comprising a base plate, a metal counterweight block is fixedly installed at the bottom of the base plate, a lifting mechanism is arranged on the top of the base plate, the lifting mechanism comprises a lifting box and a mounting seat, the lifting box and the mounting seat are both fixedly connected to the base plate, a servo motor is fixedly installed on the top of the mounting seat, a transmission gear is fixedly installed on the output shaft of the servo motor, a transmission chain is meshed on the surface of the transmission gear, a transmission rod is rotatably connected to the inner cavity of the lifting box, a driven gear is fixedly installed on one end of the transmission rod, and the driven gear is meshed with the transmission chain, a first winding roller is fixedly installed on the surface of the transmission rod, a first steel rope is wound around the surface of the first winding roller, a positioning block is fixedly installed on the other end of the first steel rope, and a workbench is fixedly installed on one side of the positioning block;

[0008] A positioning mechanism is provided on the top of the base plate, and the positioning mechanism includes a positioning box and a positioning screw. The positioning box is fixedly connected to the base plate, and the positioning screw is threadedly connected to the workbench. A positioning block is fixedly installed on one end of the positioning screw. A positioning groove used in conjunction with the positioning block is provided in the inner cavity of the positioning box, and a hand wheel is fixedly installed on the other end of the positioning screw.

[0009] A material hanging mechanism is provided on the top of the workbench, and the material hanging mechanism includes a stepper motor, and the stepper motor is fixedly connected to the workbench through a bracket, and a second winding roller is fixedly installed on the output shaft of the stepper motor, and a second steel rope is wound around the surface of the second winding roller, and a storage box is fixedly installed on the other end of the second steel rope, and a box door is movably connected to the front of the storage box through a hinge.

[0010] By adopting the above technical solution, a metal counterweight is set to increase the weight of the bottom of the device, thereby making the device more stable. By setting a lifting mechanism, the workbench can be driven to move upward by turning on the servo motor, which is convenient for lifting. By setting a positioning mechanism, the workbench can be positioned. There are multiple positioning slots. The positioning card block can be inserted into the positioning slot of the corresponding height by turning the hand wheel to prevent the workbench from falling. By setting a hanging mechanism, the height of the storage box can be adjusted by turning on the stepper motor. The box door and the storage box form a sealing structure to prevent the transported instruments from falling and being damaged.

[0011] Optionally, guide sliding blocks are fixedly mounted on both left and right sides of the positioning block, and a guide sliding groove is provided in the inner cavity of the lifting box.

[0012] By adopting the above technical solution, the guide sliding block and the guide sliding groove are used in combination to guide the positioning block, so that the positioning block is stable when moving.

[0013] Optionally, a locating bearing is fixedly installed on one side of the inner cavity of the lifting box, and the locating bearing is rotatably connected to the transmission rod.

[0014] By adopting the above technical solution, the positioning bearing can position the other end of the transmission rod, making the transmission rod more stable.

[0015] Optionally, there are two groups of positioning mechanisms, and the two groups of positioning mechanisms are distributed on the front and rear sides of the workbench.

[0016] By adopting the above technical solution, two sets of positioning mechanisms can position the front and rear sides of the workbench, making the workbench more stable.

[0017] Optionally, a moving mechanism is provided at the bottom of the base plate, and the moving mechanism includes a supporting leg, the supporting leg is fixedly connected to the base plate, a cross plate is fixedly installed on the top of the inner cavity of the supporting leg, the bottom of the cross plate is rotatably connected to a rotating rod through a bearing, and a moving wheel is fixedly installed on the bottom of the rotating rod.

[0018] By adopting the above technical solution and setting a moving mechanism, the height of the moving wheel can be adjusted by controlling the extension and retraction of the electric push rod, thereby facilitating the movement of the device.

[0019] Optionally, there are four groups of moving mechanisms, and the four groups of moving mechanisms are distributed around the bottom of the base plate.

[0020] By adopting the above technical solution, four groups of moving mechanisms can support the bottom plate, making the bottom plate more stable.

[0021] Optionally, sliding blocks are fixedly installed on both the front and rear sides of the transverse plate, and a sliding groove is provided in the inner cavity of the supporting leg.

[0022] By adopting the above technical solution, the sliding block and the sliding groove are used in combination to guide the cross plate, so that the cross plate is stable when moving.

[0023] In summary, the utility model has the following beneficial effects:

[0024] 1. The utility model can adjust the height of the workbench by setting a lifting mechanism and controlling the forward and reverse rotation of the servo motor. The adjustment range is wide, which is convenient for climbing and for evaluating and monitoring fire-fighting equipment at different heights. The positioning mechanism can be used to limit the workbench to prevent it from accidentally falling, thereby increasing safety. The hanging mechanism can be used to transport the detection instrument and prevent it from falling. The metal counterweight can be used to increase the weight at the bottom of the device to increase stability.

[0025] 2. The utility model is provided with a moving mechanism, wherein the height of the moving wheel can be adjusted by controlling the extension and retraction of the electric push rod, thereby facilitating the movement of the device; four groups of moving mechanisms can support the bottom plate to make the bottom plate more stable; the sliding block and the sliding groove are used in combination to guide the cross plate to make the cross plate stable when moving; the guide slider and the guide groove are provided and used in combination to guide the positioning block to make the positioning block stable when moving; the positioning bearing can position the other end of the transmission rod to make the transmission rod more stable; the two groups of positioning mechanisms can position the front and rear sides of the workbench to make the workbench more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model.

[0027] Figure 2 It is an enlarged structural schematic diagram of point A of the utility model.

[0028] Figure 3 It is a schematic diagram of the internal structure of the lifting box of the utility model.

[0029] Figure 4 It is a schematic diagram of the internal structure of the positioning box of the utility model.

[0030] Figure 5 This utility model Figure 4 Enlarged structural diagram at B in the middle.

[0031] Figure 6 It is a schematic diagram of the cross-sectional structure of the support leg of the utility model.

[0032] Description of reference numerals:

[0033] 1. Bottom plate; 2. Lifting mechanism; 201. Lifting box; 202. Mounting seat; 203. Servo motor; 204. Transmission gear; 205. Transmission chain; 206. Transmission rod; 207. Driven gear; 208. First winding roller; 209. First steel rope; 210. Positioning block; 211. Workbench; 3. Positioning mechanism; 301. Positioning box; 302. Positioning slot; 303. Positioning screw; 304. Positioning block; 305. Handwheel; 4. Moving mechanism; 401. Support leg; 402. Electric push rod; 403. Cross plate; 404. Rotating rod; 405. Moving wheel; 5. Lifting mechanism; 501. Stepping motor; 502. Second winding roller; 503. Second steel rope; 504. Storage box; 505. Box door; 6. Metal counterweight. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] Embodiment 1:

[0036] Please refer to Figure 1-5 A lifting device for fire safety assessment includes a base plate 1, a metal counterweight 6 is fixedly installed at the bottom of the base plate 1, a lifting mechanism 2 is arranged on the top of the base plate 1, the lifting mechanism 2 includes a lifting box 201 and a mounting seat 202, the lifting box 201 and the mounting seat 202 are both fixedly connected to the base plate 1, a servo motor 203 is fixedly installed on the top of the mounting seat 202, a transmission gear 204 is fixedly installed on the output shaft of the servo motor 203, a transmission gear 204 is meshed with a transmission chain 205 on the surface of the transmission gear 204, a transmission rod 206 is rotatably connected to the inner cavity of the lifting box 201, a positioning bearing is fixedly installed on one side of the inner cavity of the lifting box 201, and the positioning bearing is rotatably connected to the transmission rod 206, a driven gear 207 is fixedly installed on one end of the transmission rod 206, and the driven gear 207 is meshed with the transmission chain 205, and a first winding roller 2 is fixedly installed on the surface of the transmission rod 206 08. A first steel rope 209 is wound around the surface of the first winding roller 208, and a positioning block 210 is fixedly installed on the other end of the first steel rope 209. A workbench 211 is fixedly installed on one side of the positioning block 210. Guide sliders are fixedly installed on the left and right sides of the positioning block 210. A guide slide groove is provided in the inner cavity of the lifting box 201. A positioning mechanism 3 is provided on the top of the bottom plate 1. The positioning mechanism 3 includes a positioning box 301 and a positioning screw 303. The positioning box 301 is fixedly connected to the bottom plate 1, and the positioning screw 303 is threadedly connected to the workbench 211. A positioning block 304 is fixedly installed on one end of the positioning screw 303. A positioning groove 302 used in conjunction with the positioning block 304 is provided in the inner cavity of the positioning box 301. A hand wheel 305 is fixedly installed on the other end of the positioning screw 303. There are two groups of positioning mechanisms 3, and the two groups of positioning mechanisms 3 are distributed on the front and back sides of the workbench 211.

[0037] In this embodiment: by setting a metal counterweight block 6, the weight of the bottom of the device is increased, so that the device is more stable, and by setting a lifting mechanism 2, by turning on the servo motor 203, the workbench 211 can be driven to move upward, which is convenient for lifting and lowering. The guide slider and the guide slide groove are used in conjunction with each other to guide the positioning block 210, so that the positioning block 210 is stable when moving. The positioning bearing can position the other end of the transmission rod 206 to make the transmission rod 206 more stable. By setting a positioning mechanism 3, the workbench 211 can be positioned. There are multiple positioning grooves 302. By turning the hand wheel 305, the positioning block 304 can be inserted into the positioning groove 302 of the corresponding height to prevent the workbench 211 from falling. The two sets of positioning mechanisms 3 can position the front and rear sides of the workbench 211 to make the workbench 211 more stable.

[0038] Embodiment 2:

[0039] Reference Figure 1 , Figure 2 and Figure 6A material hanging mechanism 5 is arranged on the top of the workbench 211, and the material hanging mechanism 5 includes a stepping motor 501, and the stepping motor 501 is fixedly connected to the workbench 211 through a bracket, and a second winding roller 502 is fixedly installed on the output shaft of the stepping motor 501, and a second steel rope 503 is wound around the surface of the second winding roller 502, and a storage box 504 is fixedly installed on the other end of the second steel rope 503, and a box door 505 is movably connected to the front of the storage box 504 through a hinge, and a movable Mechanism 4, the moving mechanism 4 includes a supporting leg 401, the supporting leg 401 is fixedly connected to the bottom plate 1, a horizontal plate 403 is fixedly installed on the top of the inner cavity of the supporting leg 401, the bottom of the horizontal plate 403 is rotatably connected to a rotating rod 404 through a bearing, and a moving wheel 405 is fixedly installed on the bottom of the rotating rod 404. The moving mechanism 4 is divided into four groups, and the four groups of moving mechanisms 4 are distributed around the bottom of the bottom plate 1, sliding blocks are fixedly installed on the front and rear sides of the horizontal plate 403, and a sliding groove is opened in the inner cavity of the supporting leg 401.

[0040] In this embodiment: by setting up a hanging mechanism 5, wherein the height of the storage box 504 can be adjusted by turning on the stepping motor 501, the box door 505 and the storage box 504 form a sealing structure, which can prevent the transported instruments from falling and being damaged, and by setting up a moving mechanism 4, wherein the height of the moving wheel 405 can be adjusted by controlling the extension and retraction of the electric push rod 402, thereby facilitating the movement of the device, four groups of moving mechanisms 4 can support the bottom plate 1 to make the bottom plate 1 more stable, and the sliding block and the sliding groove can be used in combination to guide the horizontal plate 403 to make the horizontal plate 403 stable when moving.

[0041] The implementation principle of the utility model is as follows: when in use, the electric push rod 402 is controlled to extend and push the horizontal plate 403 to move downward, the horizontal plate 403 drives the rotating rod 404 and the moving wheel 405 to move downward, the moving wheel 405 contacts the ground, so as to facilitate the movement of the device, turn on the servo motor 203 to drive the transmission gear 204 to rotate, drive the driven gear 207 to rotate through the transmission chain 205, the driven gear 207 drives the transmission rod 206 to rotate, the transmission rod 206 drives the first winding roller 208 to rotate, the first winding roller 208 winds up the first steel rope 209, the first steel rope 209 drives the positioning block 210 to move upward, and the positioning block 210 drives the first steel rope 209 to move upward. The movable workbench 211 moves upward, and after reaching the specified position, the hand wheel 305 is turned to drive the positioning screw 303 to rotate. Through the cooperation of the screw groove in the workbench 211, the positioning block 304 can be driven to insert into the corresponding positioning groove 302, so that the workbench 211 can be stabilized, the box door 505 is opened, and the detection instrument is placed in the storage box 504. The box door 505 is closed to prevent the detection instrument from falling. The stepper motor 501 is turned on to drive the second winding roller 502 to rotate. The second winding roller 502 reels the second steel rope 503, which can drive the storage box 504 to move upward. Conversely, the reverse stepper motor 501 can drive the storage box 504 to move downward.

[0042] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A lifting device for fire safety assessment, comprising a base plate (1), characterized in that: A metal counterweight (6) is fixedly mounted on the bottom of the base plate (1); a lifting mechanism (2) is arranged on the top of the base plate (1); the lifting mechanism (2) comprises a lifting box (201) and a mounting seat (202); the lifting box (201) and the mounting seat (202) are both fixedly connected to the base plate (1); a servo motor (203) is fixedly mounted on the top of the mounting seat (202); a transmission gear (204) is fixedly mounted on the output shaft of the servo motor (203); a transmission chain (205) is meshed on the surface of the transmission gear (204); The inner cavity of the lifting box (201) is rotatably connected to a transmission rod (206), one end of which is fixedly mounted with a driven gear (207), and the driven gear (207) is meshed with a transmission chain (205), a first winding roller (208) is fixedly mounted on the surface of the transmission rod (206), a first steel rope (209) is wound around the surface of the first winding roller (208), a positioning block (210) is fixedly mounted on the other end of the first steel rope (209), and a workbench (211) is fixedly mounted on one side of the positioning block (210); A positioning mechanism (3) is arranged on the top of the base plate (1), and the positioning mechanism (3) comprises a positioning box (301) and a positioning screw (303); the positioning box (301) is fixedly connected to the base plate (1); the positioning screw (303) is threadedly connected to the workbench (211); a positioning block (304) is fixedly installed at one end of the positioning screw (303); a positioning groove (302) used in conjunction with the positioning block (304) is provided in the inner cavity of the positioning box (301); and a hand wheel (305) is fixedly installed at the other end of the positioning screw (303); A material hanging mechanism (5) is arranged on the top of the workbench (211), and the material hanging mechanism (5) includes a stepping motor (501), and the stepping motor (501) is fixedly connected to the workbench (211) through a bracket, and a second winding roller (502) is fixedly installed on the output shaft of the stepping motor (501), and a second steel rope (503) is wound around the surface of the second winding roller (502), and a storage box (504) is fixedly installed on the other end of the second steel rope (503), and the front of the storage box (504) is movably connected to a box door (505) through a hinge.

2. A lifting device for fire safety assessment according to claim 1, characterized in that: Guide sliding blocks are fixedly mounted on both the left and right sides of the positioning block (210), and a guide sliding groove is provided in the inner cavity of the lifting box (201).

3. A lifting device for fire safety assessment according to claim 1, characterized in that: A positioning bearing is fixedly mounted on one side of the inner cavity of the lifting box (201), and the positioning bearing is rotatably connected to the transmission rod (206).

4. A lifting device for fire safety assessment according to claim 1, characterized in that: The positioning mechanisms (3) are in two groups, and the two groups of positioning mechanisms (3) are distributed on the front and rear sides of the workbench (211).

5. A lifting device for fire safety assessment according to claim 1, characterized in that: A moving mechanism (4) is provided at the bottom of the base plate (1), and the moving mechanism (4) comprises a supporting leg (401), and the supporting leg (401) is fixedly connected to the base plate (1); a transverse plate (403) is fixedly installed at the top of the inner cavity of the supporting leg (401); a rotating rod (404) is rotatably connected to the bottom of the transverse plate (403) via a bearing, and a moving wheel (405) is fixedly installed at the bottom of the rotating rod (404).

6. A lifting device for fire safety assessment according to claim 5, characterized in that: There are four groups of moving mechanisms (4), and the four groups of moving mechanisms (4) are distributed around the bottom of the base plate (1).

7. A lifting device for fire safety assessment according to claim 5, characterized in that: Sliding blocks are fixedly mounted on both the front and rear sides of the transverse plate (403), and a sliding groove is provided in the inner cavity of the supporting leg (401).

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