A construction work platform

Abstract

The present application discloses a construction work platform, which belongs to the technical field of building construction, and comprises a mobile base, a lifting bracket is installed on the top of the mobile base, an operating table is installed on the top of the lifting bracket, a feeding box that slides vertically is arranged on one side of the operating table, a driving component for driving the feeding box to move vertically is arranged on the operating table, the feeding box comprises a bottom plate, a baffle is installed on the side of the bottom plate away from the operating table, two mutually parallel side plates are fixed on the top surface of the bottom plate, the side plates are located on both sides of the baffle, a mobile plate is installed between the two side plates to slide vertically, and a control component for controlling the mobile plate to move vertically is arranged on the feeding box. The present application has the effect of improving construction efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a construction work platform. Background Art

[0002] With the development of the modern construction industry, there are many types of high-altitude operations that need to be performed during construction, including exterior wall painting, window installation, curtain wall installation, etc. These operations usually require workers to operate on the facades of higher buildings. Therefore, how to ensure the safety of construction workers, work efficiency and construction quality has become an important technical issue.

[0003] At present, most of the aerial work platforms commonly seen on the market use traditional lifting platforms or scaffolding structures. Although scaffolding can provide relatively stable support, the construction process is complicated and requires a lot of manual operation, which not only increases the construction period but also poses certain safety hazards. Compared with scaffolding, lifting platforms are more practical, but they can only hold a certain amount of construction materials. When the construction materials are insufficient, the lifting platform needs to be lowered to the ground to transfer the construction materials, which affects construction safety and has low construction efficiency. Summary of the invention

[0004] In order to improve the problem of low construction efficiency of existing lifting platforms, the present application provides a construction work platform.

[0005] The construction work platform provided in this application adopts the following technical solution: A construction work platform comprises a mobile base, a lifting bracket is installed on the top of the mobile base, an operating table is installed on the top of the lifting bracket, a feeding box that slides vertically is arranged on one side of the operating table, a driving component for driving the feeding box to move vertically is arranged on the operating table, the feeding box comprises a bottom plate, a baffle is installed on the side of the bottom plate away from the operating table, two side plates parallel to each other are fixed on the top surface of the bottom plate, the side plates are located on both sides of the baffle, a mobile plate is installed between the two side plates for vertical sliding, and a control component for controlling the mobile plate to move vertically is arranged on the feeding box.

[0006] By adopting the above technical solution, construction workers place the materials in the feeding box at the ground position, and then use the driving component to drive the feeding box to move upward to the height of the operating table. The operator on the operating table only needs to transfer the materials from the feeding box to the operating table to proceed to the next step of construction. The control component can be used to move the movable plate downward to facilitate the operator to transfer the materials and improve construction efficiency.

[0007] Preferably, two limit blocks are fixed on the top of the operating table, and two positioning blocks are fixed on the sides of the movable base. The top surface of the limit block is provided with a limit groove, and the top surface of the positioning block is provided with a positioning groove. Vertically arranged guide rods are passed through the limit grooves and the positioning grooves. Guide blocks are fixed on both sides of the base plate. The top surface of the guide block is provided with a guide groove, and the guide rod is passed through the guide groove.

[0008] By adopting the above technical solution, after the operating table is raised to the construction height, the guide rod is passed through the positioning slot, the guide slot and the limit slot from top to bottom in sequence. The guide rod provides a guiding effect on the feeding box, so that the feeding box always moves vertically.

[0009] Preferably, a magnetic block 1 is fixed to the top surface of the guide rod, the bottom surface of the magnetic block 1 can fit with the top surface of the positioning block, and the magnetic block 1 can be attracted to the positioning block.

[0010] By adopting the above technical solution, the magnetic block 1 is attracted to the positioning block, thereby positioning the guide rod, making the guide rod more stable.

[0011] Preferably, the driving assembly includes two electric hoists installed on the operating table, the two electric hoists correspond to the two guide blocks one by one, and the steel wire ropes of the electric hoists are connected to the top surfaces of the guide blocks; the operating table includes an operating panel, a fixed bar and two side bars are fixed to the top surface of the operating panel, a movable bar is installed between the two side bars along the vertical sliding direction, and the movable bar is fixedly connected to the side bars by bolts.

[0012] By adopting the above technical solution, the electric hoist is started, and the electric hoist drives the guide block to move upward through the steel wire, thereby driving the feeding box to move upward.

[0013] Preferably, the baffle is rotatably mounted on the top surface of the base plate, and the two side plates are respectively provided with snap-in grooves on their opposite inner sides, and the side plates are slidably mounted with snap-in blocks along their own thickness direction through the snap-in grooves, and the side surfaces of the baffle are provided with snap-in grooves for inserting the snap-in blocks, and the top surfaces of the side plates are provided with push grooves connected to the snap-in grooves, and the top surfaces of the snap-in blocks are fixed with push blocks, and the push blocks are slidably matched with the side plates along the thickness direction of the side plates through the push grooves.

[0014] By adopting the above technical solution, the baffle is rotated in the direction away from the movable plate to facilitate the transportation of construction materials to the top of the base plate. After the transportation is completed, the baffle is moved in the direction close to the movable plate so that the card block is inserted into the card slot, thereby limiting and fixing the baffle.

[0015] Preferably, a slider is fixed to the side of the clamping block, and a sliding groove is provided on the inner wall of the clamping groove. The slider slides and cooperates with the side plate along the thickness direction of the side plate through the sliding groove. A spring is fixed to the side of the slider away from the baffle, and one end of the spring away from the slider is fixedly connected to the inner wall of the sliding groove. The side of the clamping block close to the baffle is provided with an inclined surface one, and the inclined surface one is located on the side of the clamping block away from the movable plate.

[0016] By adopting the above technical solution, when the baffle is moved toward the direction close to the movable plate, the baffle pushes the clamping block into the clamping groove through the inclined surface 1. When the clamping groove is aligned with the clamping slot, the clamping block is inserted into the clamping slot under the elastic force of the spring 1.

[0017] Preferably, connecting grooves are provided on the relative inner sides of the two side plates, and sliding blocks are respectively fixed on both sides of the movable plate. The sliding blocks slide and cooperate with the side plates vertically through the connecting grooves. The control component includes a screw rod rotatably installed in one of the connecting grooves, the sliding block is sleeved on the outer periphery of the screw rod, and the sliding block cooperates with the screw rod in threaded transmission. A motor 1 is installed on the top of the side plate, and the output end of the motor 1 is fixedly connected to the bottom end of the screw rod.

[0018] By adopting the above technical solution, motor 1 is started, which drives the screw to rotate, and the screw drives the sliding block to move vertically, thereby driving the movable plate to move downward, so that the operator on the operating table can transfer the construction materials in the feeding box to the operating table.

[0019] Preferably, a control groove is provided on the inner side of one of the side plates, and a control block is installed on the side plate through the control groove for vertical sliding movement, a spring 2 is fixed to the bottom surface of the control block, and the bottom end of the spring 2 is fixedly connected to the inner bottom surface of the control groove, an electromagnet is fixed to the inner top surface of the control groove, and the electromagnet repel each other with the control block after being energized, and a contact plate is fixed to the side of the control block; a contact groove is provided on the bottom surface of the contact plate, and the contact block is installed on the contact plate through the contact groove for vertical sliding movement, and the bottom surface of the contact block can abut against the material in the feeding box, and a buffer block is fixed to the side surface of the contact block, and a buffer groove is provided on the inner wall of the contact groove, and the buffer block slides vertically with the contact plate through the buffer groove, and a buffer spring is fixed to the top surface of the buffer block, and the top end of the buffer spring is fixedly connected to the inner top surface of the buffer groove.

[0020] By adopting the above technical solution, when the electromagnet is energized, the electromagnet and the control block repel each other, and the contact block abuts against the material under the elastic force of the buffer spring, thereby limiting the material; when the electromagnet is de-energized, the control block moves upward under the elastic force of spring 2, causing the contact block to move upward, so that construction workers can transfer the materials.

[0021] Preferably, the movable plate is rotatably installed with two blocks on the side close to the operating table, and the blocks can fit with the side of the movable plate close to the operating table, and the side of the block close to the movable plate is embedded with a contact piece 1 and fixed thereto, and the side of the movable plate close to the block is embedded with a contact piece 2 for electrically contacting the contact piece 1, the contact piece 1 is electrically connected to the electromagnet, and the contact piece 2 is electrically connected to a power supply.

[0022] By adopting the above technical solution, when the stopper is fitted with the movable plate, the contact piece 1 is electrically contacted with the contact piece 2, and the electromagnet is energized to work; when the stopper is separated from the movable plate, the contact piece 1 is separated from the contact piece 2, and the electromagnet is de-energized.

[0023] Preferably, connecting blocks are respectively installed on both sides of the stop block, and the connecting blocks are fixedly connected to the movable plate. A connecting rod is rotatably installed between the two connecting blocks. The stop block is sleeved on the outer periphery of the connecting rod, and a torsion spring is sleeved on the outer periphery of the connecting rod. One end of the torsion spring is fixedly connected to the stop block, and the other end of the torsion spring is fixedly connected to the connecting block.

[0024] By adopting the above technical solution, without being affected by external force, the block abuts against the movable plate under the elastic force of the torsion spring, so that the contact piece 1 is electrically contacted with the contact piece 2, the electromagnet is energized to work, and the contact block connects the material, thereby ensuring the personal safety of the operator; when the material needs to be transported, the block is moved in the direction away from the movable plate, and the electromagnet is powered off to facilitate the operator to move the material.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Construction workers place the materials in the feeding box on the ground, and then use the driving component to drive the feeding box to move upward to the height of the operating table. The operator on the operating table only needs to transfer the materials from the feeding box to the operating table to proceed to the next step of construction. The control component can move the moving plate downward to facilitate the operator to transfer the materials and improve construction efficiency; 2. Rotate the baffle in the direction away from the movable plate to facilitate the transportation of construction materials to the top of the base plate. After the transportation is completed, move the baffle in the direction close to the movable plate so that the clamping block is inserted into the clamping slot, thereby limiting and fixing the baffle; 3. When the electromagnet is energized, the electromagnet and the control block repel each other, and the contact block contacts the material under the elastic force of the buffer spring, thereby limiting the material; when the electromagnet is de-energized, the control block moves upward under the elastic force of spring 2, causing the contact block to move upward, making it easier for construction workers to transfer materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the construction work platform of an embodiment of the present application.

[0027] Figure 2 It is a structural schematic diagram of an operating platform in a construction work platform of an embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the feeding box in the construction work platform of the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the structure of a baffle in a construction work platform according to an embodiment of the present application.

[0030] Figure 5 yes Figure 4 A magnified schematic diagram of center A.

[0031] Figure 6 It is a cross-sectional view of a contact plate in a construction work platform according to an embodiment of the present application.

[0032] Figure 7 yes Figure 4 A magnified schematic diagram of point B in the middle.

[0033] Reference numerals: 1, mobile base; 11, lifting bracket; 12, operating table; 121, operating panel; 122, fixed bar; 123, side bar; 1231, limit block; 1232, limit slot; 124, mobile bar; 13, positioning block; 131, positioning slot; 14, guide rod; 15, magnetic block 1; 16, electric hoist; 2, feeding box; 21, bottom plate; 22, guide block; 23, guide slot; 24, side plate; 241, connecting slot; 25, mobile plate; 251, sliding block; 252, contact piece 2; 2 6. baffle; 261. slot; 27. screw; 28. motor 1; 3. snap-in block; 31. snap-in slot; 32. push slot; 33. push block; 34. slider; 35. slide slot; 36. spring 1; 37. inclined plane 1; 4. control block; 41. control slot; 42. spring 2; 43. electromagnet; 44. contact plate; 45. contact slot; 46. contact block; 47. buffer slot; 48. buffer block; 49. buffer spring; 5. block; 51. connecting block; 52. connecting rod; 53. torsion spring; 54. contact piece 1. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-7 This application is described in further detail.

[0035] The present application embodiment discloses a construction work platform. Figure 1 and Figure 2 The construction work platform includes a mobile base 1, a lifting bracket 11 is installed on the top of the mobile base 1, and an operating platform 12 is installed on the top of the lifting bracket 11. The operating platform 12 includes an operating panel 121, a fixed fence 122 and two side fences 123 are fixed on the top surface of the operating panel 121, a mobile fence 124 is installed between the two side fences 123 along the vertical sliding, and the mobile fence 124 is fixedly connected to the side fences 123 by bolts.

[0036] Reference Figure 1 , Figure 2 and Figure 3 , a feeding box 2 that slides vertically is arranged on the outer side of the moving fence 124, and the feeding box 2 includes a bottom plate 21, and guide blocks 22 are fixed on both sides of the bottom plate 21, and a guide through groove 23 is provided on the top surface of the guide block 22. A baffle plate 26 is rotatably installed on the side of the bottom plate 21 away from the operating table 12, and two mutually parallel side plates 24 are fixed on the top surface of the bottom plate 21, and the side plates 24 are located on both sides of the baffle plate 26, and a moving plate 25 is installed between the two side plates 24 along the vertical sliding. A limiting block 1231 is fixed on the side of the side fence 123 close to the feeding box 2, and a limiting through groove 1232 is provided on the top surface of the limiting block 1231. Two positioning blocks 13 are fixed on the side of the mobile base 1, and a positioning through groove 131 is provided on the top surface of the positioning block 13. A vertically arranged guide rod 14 is inserted in the limiting through groove 1232 and the positioning through groove 131, and the guide rod 14 is inserted in the guiding through groove 23. A magnetic block 15 is fixed to the top surface of the guide rod 14, and the bottom surface of the magnetic block 15 can fit with the top surface of the positioning block 13, and the magnetic block 15 can be attracted to the positioning block 13. An electric hoist 16 is installed on the top of the side plate 24, and the two electric hoists 16 correspond to the two guide blocks 22 one by one, and the steel wire rope of the electric hoist 16 is connected to the top surface of the guide block 22.

[0037] After the operating table 12 is raised to the construction height, the guide rod 14 is passed through the positioning slot 131, the guide slot 23 and the limit slot 1232 from top to bottom in sequence, the magnetic block 15 is attracted to the positioning block 13, the guide rod 14 provides a guiding effect on the feeding box 2, and the electric hoist 16 is started. The electric hoist 16 drives the guide block 22 to move upward through the steel wire, thereby driving the feeding box 2 to move upward.

[0038] Reference Figure 1 and Figure 3, connecting grooves 241 are provided on the opposite inner sides of the two side plates 24, and sliding blocks 251 are fixed on both sides of the movable plate 25, respectively, and the sliding blocks 251 slide and cooperate with the side plates 24 vertically through the connecting grooves 241. A screw 27 is rotatably installed in one of the connecting grooves 241, and the sliding block 251 is sleeved on the outer periphery of the screw 27, and the sliding block 251 and the screw 27 are threadedly matched. A motor 28 is installed on the top of the side plate 24, and the output end of the motor 28 is fixedly connected to the bottom end of the screw 27. When the motor 28 is started, the motor 28 drives the screw 27 to rotate, and the screw 27 drives the sliding block 251 to move vertically, thereby driving the movable plate 25 to move downward, so that the operator on the operating table 12 can transfer the construction materials in the feeding box 2 to the operating table 12.

[0039] Reference Figure 4 and Figure 5 The baffle plate 26 is rotatably mounted on the top surface of the bottom plate 21, and the two side plates 24 are provided with a clamping groove 31 on the opposite inner sides. The side plate 24 is provided with a clamping block 3 that slides along its thickness direction through the clamping groove 31, and a clamping groove 261 for inserting the clamping block 3 is provided on the side of the baffle plate 26. A push groove 32 that is connected to the clamping groove 31 is provided on the top surface of the side plate 24, and a push block 33 is fixed on the top surface of the clamping block 3. The push block 33 slides and cooperates with the side plate 24 along the thickness direction of the side plate 24 through the push groove 32. A slider 34 is fixed on the side of the clamping block 3, and a slide groove 35 is provided on the inner wall of the clamping groove 31. The slider 34 slides and cooperates with the side plate 24 along the thickness direction of the side plate 24 through the slide groove 35. A spring 1 36 is fixed on the side of the slider 34 away from the baffle plate 26, and one end of the spring 1 36 away from the slider 34 is fixedly connected to the inner wall of the slide groove 35. A slope 1 37 is provided on the side of the clamping block 3 close to the baffle 26 , and the slope 1 37 is located on the side of the clamping block 3 away from the moving plate 25 .

[0040] When the material is transported into the feeding box 2, the pushing block 33 is moved to disengage the clamping block 3 from the clamping slot 261, and then the baffle 26 is rotated in the direction away from the movable plate 25, so as to facilitate the transport of the construction material to the top of the base plate 21; after the transport is completed, the baffle 26 is moved in the direction close to the movable plate 25, and the baffle 26 pushes the clamping block 3 into the clamping slot 31 through the inclined surface 37. When the clamping slot 31 is aligned with the clamping slot 261, the clamping block 3 is inserted into the clamping slot 261 under the elastic force of the spring 36, thereby limiting and fixing the baffle 26.

[0041] Reference Figure 4 and Figure 6, a control groove 41 is provided on the inner side of one of the side plates 24, and a control block 4 is installed on the side plate 24 through the control groove 41 in a vertical sliding manner. A spring 2 42 is fixed to the bottom surface of the control block 4, and the bottom end of the spring 2 42 is fixedly connected to the inner bottom surface of the control groove 41. An electromagnet 43 is fixed to the inner top surface of the control groove 41, and the electromagnet 43 repels the control block 4 after being energized. A contact plate 44 is fixed to the side of the control block 4, and a contact groove 45 is provided on the bottom surface of the contact plate 44. A contact block 46 is installed on the contact plate 44 in a vertical sliding manner through the contact groove 45, and the bottom surface of the contact block 46 can abut against the material in the feeding box 2. A buffer block 48 is fixed to the side of the contact block 46, and a buffer groove 47 is provided on the inner wall of the contact groove 45. The buffer block 48 slides vertically with the contact plate 44 through the buffer groove 47. A buffer spring 49 is fixed to the top surface of the buffer block 48 , and the top end of the buffer spring 49 is fixedly connected to the inner top surface of the buffer groove 47 .

[0042] Reference Figure 4 and Figure 7 , two stoppers 5 are rotatably mounted on the side of the moving plate 25 close to the operating table 12, and the stoppers 5 can fit with the side of the moving plate 25 close to the operating table 12. Connecting blocks 51 are respectively mounted on both sides of the stoppers 5, and the connecting blocks 51 are fixedly connected to the moving plate 25. A connecting rod 52 is rotatably mounted between the two connecting blocks 51, and the stoppers 5 are sleeved on the outer periphery of the connecting rod 52. A torsion spring 53 is sleeved on the outer periphery of the connecting rod 52, one end of the torsion spring 53 is fixedly connected to the stoppers 5, and the other end of the torsion spring 53 is fixedly connected to the connecting blocks 51. A contact piece 1 54 is embedded and fixed on the side of the stoppers 5 close to the moving plate 25, and a contact piece 2 252 for electrical contact with the contact piece 1 54 is embedded and fixed on the side of the moving plate 25 close to the stoppers 5, and the contact piece 1 54 is electrically connected to the electromagnet 43, and the contact piece 2 252 is electrically connected to the power supply.

[0043] When the stopper 5 is in contact with the movable plate 25, the contact piece 1 54 is in electrical contact with the contact piece 2 252, the electromagnet 43 is energized to work, the electromagnet 43 and the control block 4 repel each other, and the contact block 46 abuts against the material under the elastic force of the buffer spring 49, thereby limiting the position of the material; when the stopper 5 is separated from the movable plate 25, the contact piece 1 54 is separated from the contact piece 2 252, the electromagnet 43 is powered off, and the control block 4 moves upward under the elastic force of the spring 2 42, so that the contact block 46 moves upward, so that the construction personnel can transfer the materials.

[0044] The implementation principle of a construction work platform in an embodiment of the present application is: the construction personnel place the materials in a feed box 2 at the ground position, and then move the feed box 2 upward to the height of an operating table 12. The operator on the operating table 12 only needs to transfer the materials from the feed box 2 to the operating table 12 to proceed to the next step of construction, and the construction efficiency is relatively high.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction work platform, characterized in that: The invention comprises a movable base (1), a lifting bracket (11) is installed on the top of the movable base (1), an operating table (12) is installed on the top of the lifting bracket (11), a feeding box (2) which slides vertically is arranged on one side of the operating table (12), a driving component for driving the feeding box (2) to move vertically is arranged on the operating table (12), the feeding box (2) comprises a bottom plate (21), a baffle (26) is installed on the side of the bottom plate (21) away from the operating table (12), two mutually parallel side plates (24) are fixed on the top surface of the bottom plate (21), the side plates (24) are located on both sides of the baffle (26), a movable plate (25) is installed between the two side plates (24) to slide vertically, and a control component for controlling the movable plate (25) to move vertically is arranged on the feeding box (2).

2. A construction work platform according to claim 1, characterized in that: Two limit blocks (1231) are fixed on the top of the operating table (12), and two positioning blocks (13) are fixed on the side of the movable base (1). The top surface of the limit block (1231) is provided with a limit slot (1232), and the top surface of the positioning block (13) is provided with a positioning slot (131). A vertically arranged guide rod (14) is inserted into the limit slot (1232) and the positioning slot (131). Guide blocks (22) are fixed on both sides of the bottom plate (21), and the top surface of the guide block (22) is provided with a guide slot (23), and the guide rod (14) is inserted into the guide slot (23).

3. A construction work platform according to claim 2, characterized in that: A magnetic block 1 (15) is fixed to the top surface of the guide rod (14); the bottom surface of the magnetic block 1 (15) can be fitted with the top surface of the positioning block (13); and the magnetic block 1 (15) can be attracted to the positioning block (13).

4. A construction work platform according to claim 3, characterized in that: The driving assembly comprises two electric hoists (16) mounted on the operating platform (12), the two electric hoists (16) corresponding to the two guide blocks (22) one by one, and the steel wire ropes of the electric hoists (16) are connected to the top surfaces of the guide blocks (22); the operating platform (12) comprises an operating panel (121), a fixed fence (122) and two side fences (123) are fixed on the top surface of the operating panel (121), a movable fence (124) is mounted between the two side fences (123) in a vertical sliding manner, and the movable fence (124) is fixedly connected to the side fences (123) by bolts.

5. A construction work platform according to claim 1, characterized in that: The baffle plate (26) is rotatably mounted on the top surface of the bottom plate (21); the two side plates (24) are provided with respective clamping grooves (31) on their opposite inner sides; the side plates (24) are provided with clamping blocks (3) through the clamping grooves (31) for slidingly mounting the clamping blocks (3) along their thickness direction; the side surfaces of the baffle plate (26) are provided with clamping grooves (261) for inserting the clamping blocks (3); the top surfaces of the side plates (24) are provided with pushing grooves (32) connected with the clamping grooves (31); the top surfaces of the clamping blocks (3) are fixed with pushing blocks (33); the pushing blocks (33) are slidably matched with the side plates (24) through the pushing grooves (32) along the thickness direction of the side plates (24) 6. A construction work platform according to claim 5, characterized in that: A slider (34) is fixed to the side of the clamping block (3), and a slide groove (35) is provided on the inner wall of the clamping groove (31). The slider (34) slides and cooperates with the side plate (24) along the thickness direction of the side plate (24) through the slide groove (35). A spring (36) is fixed to the side of the slider (34) away from the baffle (26), and one end of the spring (36) away from the slider (34) is fixedly connected to the inner wall of the slide groove (35). A slope (37) is provided on the side of the clamping block (3) close to the baffle (26), and the slope (37) is located on the side of the clamping block (3) away from the movable plate (25).

7. A construction work platform according to claim 1, characterized in that: The two side plates (24) are provided with connecting grooves (241) on the opposite inner sides, and sliding blocks (251) are fixed on both sides of the movable plate (25), and the sliding blocks (251) are slidably matched with the side plates (24) in the vertical direction through the connecting grooves (241). The control component includes a screw rod (27) rotatably installed in one of the connecting grooves (241), and the sliding block (251) is sleeved on the outer periphery of the screw rod (27). The sliding block (251) and the screw rod (27) are threadedly matched, and a motor (28) is installed on the top of the side plate (24), and the output end of the motor (28) is fixedly connected to the bottom end of the screw rod (27).

8. A construction work platform according to claim 1, characterized in that: A control groove (41) is provided on the inner side of one of the side plates (24), and a control block (4) is mounted on the side plate (24) through the control groove (41) to slide vertically. A second spring (42) is fixed to the bottom surface of the control block (4), and the bottom end of the second spring (42) is fixedly connected to the inner bottom surface of the control groove (41). An electromagnet (43) is fixed to the inner top surface of the control groove (41), and the electromagnet (43) and the control block (4) repel each other when energized. A contact plate (44) is fixed to the side surface of the control block (4); and a contact groove (45) is provided on the bottom surface of the contact plate (44). The contact plate (44) is provided with a contact block (46) which is slidably mounted vertically through the contact groove (45); the bottom surface of the contact block (46) can abut against the material in the feeding box (2); a buffer block (48) is fixed to the side of the contact block (46); a buffer groove (47) is provided on the inner wall of the contact groove (45); the buffer block (48) is slidably matched with the contact plate (44) vertically through the buffer groove (47); a buffer spring (49) is fixed to the top surface of the buffer block (48); the top end of the buffer spring (49) is fixedly connected to the inner top surface of the buffer groove (47).

9. A construction work platform according to claim 8, characterized in that: The movable plate (25) is rotatably mounted with two stoppers (5) on the side close to the operating table (12); the stoppers (5) are capable of fitting with the side of the movable plate (25) close to the operating table (12); a contact piece 1 (54) is embedded and fixed on the side of the stoppers (5) close to the movable plate (25); a contact piece 2 (252) for electrically contacting the contact piece 1 (54) is embedded and fixed on the side of the movable plate (25) close to the stoppers (5); the contact piece 1 (54) is electrically connected to the electromagnet (43); and the contact piece 2 (252) is electrically connected to a power source.

10. A construction work platform according to claim 9, characterized in that: Connecting blocks (51) are respectively installed on both sides of the stopper (5), and the connecting blocks (51) are fixedly connected to the movable plate (25). A connecting rod (52) is rotatably installed between the two connecting blocks (51). The stopper (5) is sleeved on the outer periphery of the connecting rod (52), and a torsion spring (53) is sleeved on the outer periphery of the connecting rod (52). One end of the torsion spring (53) is fixedly connected to the stopper (5), and the other end of the torsion spring (53) is fixedly connected to the connecting block (51).

Images