A material transport device with protective function for construction

Abstract

The present invention discloses a material transport device for construction with a protective function, and relates to the technical field of material transport devices. The transport device comprises a processing frame and a push handle, wherein the push handle is fixedly mounted on the surface of the processing frame, and further comprises an anti-tilting device; wherein the anti-tilting device comprises a fixed frame, a receiving rod, a No. 1 roller sliding plate, an L-shaped rod, a sliding frame and a fixed block, wherein the fixed frame is fixedly mounted below the processing frame, the receiving rod is slidably mounted on the inner wall of the fixed frame, the No. 1 roller is rotatably mounted on the surface of the receiving rod, the sliding plate is fixedly mounted above the receiving rod, the L-shaped rod slides through the inner and outer walls of the fixed frame, and the sliding frame is slidably mounted on the surface of the processing frame. The transport device prevents the processing frame from further tilting and thus causing rollover, thereby reducing safety hazards, and at the same time facilitates the transportation of materials when the processing frame is tilted, thereby improving the efficiency of transportation.

Description

Technical Field

[0001] The invention relates to the technical field of material transport devices, in particular to a material transport device for construction with a protective function. Background Art

[0002] At construction sites, material handlers are a type of lifting equipment used to move and transport construction materials and equipment.

[0003] The patent with the patent announcement number CN211844476U relates to a material transport device for construction, including a hollow bottom plate, a rotating rod connected to the inner cavity of the hollow bottom plate, a rotating block fixedly sleeved on the front and back of the rotating rod body, a storage box fixedly connected to the top of the rotating block, and a fixed half ring fixedly connected to the left side of the front and back top of the storage box. The patent can make the storage box rotate on the plate body of the hollow bottom plate through the structural design between the rotating rod, the rotating block and the hollow bottom plate, so as to facilitate the staff to unload materials. At the same time, through the structural design of the storage box, it can effectively prevent the materials placed in the storage box from falling to the ground during transportation, and at the same time, it can also protect the materials in the storage box, so that the patent can effectively prevent the materials from falling from the transportation device during transportation, and at the same time, it is convenient for the staff to unload materials.

[0004] In the above patent, the structural design of the storage box can effectively prevent the materials placed in the storage box from falling to the ground during transportation, and at the same time can protect the materials in the storage box, so that the patent can effectively prevent the materials from falling from the transportation device during transportation, thereby improving the transportation effect. However, during the transportation of construction materials, the construction site is uneven, and the storage box is prone to tilt during transportation, resulting in rollover, which will cause harm to the construction workers during transportation and increase safety hazards. For this reason, a material transportation device with a protective function for construction is designed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a material transport device for construction with a protective function, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a material transportation device for construction with a protective function, including a processing frame and a push handle, the push handle is fixedly installed on the surface of the processing frame, and also includes an anti-tilt device and a limit device; wherein the anti-dumping device includes a fixed frame, a receiving rod, a No. 1 roller sliding plate, an L-shaped rod, a sliding frame and a fixed block, the No. 1 roller moves upward to drive the receiving rod to move upward, the receiving rod moves upward to drive the sliding plate to move upward, the sliding plate moves upward to contact and squeeze the L-shaped rod to move, the fixed frame is fixedly installed below the processing frame, the receiving rod is slidably installed on the inner wall of the fixed frame, the No. 1 roller The handle is fixedly mounted on the support rod, and the sliding plate is fixedly mounted above the support rod. The L-shaped rod slides through the inner and outer walls of the fixed frame. The sliding frame is slidably mounted on the surface of the processing frame. The fixed block is fixedly mounted on the surface of the sliding frame. The sliding plate and the processing frame are fixedly connected by a spring. An end of the L-shaped rod close to the sliding plate is provided with a beveled surface one, and an end of the fixed block close to the L-shaped rod is provided with a beveled surface two. The L-shaped rod moves to contact and squeeze the fixed block to move. The fixed block moves downward to drive the sliding frame to move downward. The downward movement of the sliding frame provides additional support for the processing frame to prevent the processing frame from further tilting and thus causing rollover, thereby reducing safety hazards.

[0007] According to the above technical solution, a clockwork spring is arranged between the sliding frame and the processing frame, and a No. 2 roller is rotatably installed inside the sliding frame. The sliding frame moves downward to drive the No. 2 roller to move downward. The No. 2 roller moves downward, contacts the ground and rolls, converting the sliding connection into a rolling connection, reducing the friction between the sliding frame and the ground, facilitating the transportation of materials when tilted, and improving the efficiency of transportation.

[0008] The cam is pressed against the support frame to move upward, and the movement of the lifting rod releases the limit stop, so that the cam can be easily moved.

[0009] According to the above technical solution, the fixed rod and the push handle are fixedly connected by a spring sheet, a second clockwork spring is arranged between the lifting rod and the sliding plate, and the sliding block and the fixed frame are fixedly connected by a second spring. The rotation of the No. 1 roller drives the limit rod to rotate, and the limit rod rotates to contact and squeeze the lifting rod to move upward, thereby limiting the rotation speed of the No. 1 roller, avoiding excessive movement speed and collision with foreign objects to cause rollover, and reducing safety hazards.

[0010] According to the above technical scheme, it also includes a speed limiting device and an anti-pressure device, the speed limiting device includes a speed limiting frame, a slide plate and an exhaust pipe, the lifting rod moves upward to drive the slide plate to move upward, the slide plate moves upward to squeeze the air inside the speed limiting frame, the speed limiting frame is fixedly installed below the sliding plate, the slide plate is slidably installed inside the speed limiting frame, the exhaust pipe is fixedly penetrated through the inner and outer walls of the speed limiting frame, the lifting rod slides through the inner and outer walls of the speed limiting frame, the slide plate is fixedly installed on the surface of the lifting rod, the slide plate is fixedly connected to the top of the inner wall of the speed limiting frame by spring three, the lower part of the lifting rod is provided with arc surface one, the slide plate is reset under the action of spring three, further improving the speed limit of the No. 1 roller, maintaining the speed stability during material transportation, avoiding rollover when the ground environment is harsh, and reducing safety hazards.

[0011] According to the above technical solution, a movable plate is slidably installed on the inner wall of the speed limit frame, a connecting rod is fixedly installed under the movable plate, a baffle is fixedly installed under the connecting rod, the movable plate and the inner wall of the speed limit frame are fixedly connected by an elastic telescopic rod, a one-way valve is fixedly installed on the surface of the speed limit frame, the baffle moves downward to open the outlet of the exhaust pipe, and discharges the air under the slide board, clearing the direction of the No. 1 roller and the limit rod to prevent small stones or other foreign objects from being stuck between the limit rods, thereby affecting the stability of the material transportation process and reducing subsequent maintenance costs.

[0012] The support plate is fixedly mounted on the support plate, the push rod is slidably mounted on the surface of the processing frame, the support plate is rotatably mounted on the surface of the processing frame, the pressure rod is fixedly mounted on the surface of the fixed block, the baffle rod slides through the inner and outer walls of the processing frame, and the receiving block is fixedly mounted on the surface of the baffle rod. The push rod and the support plate are fixedly connected by spring four. The upper side of the push rod is provided with an arc surface two, the lower side of the support plate is provided with an arc surface three, and the surface of the receiving block is provided with an oblique cut surface four. The push rod pops out under the action of the spring four and squeezes the support plate to rotate. The rotation of the support plate provides additional support for the processing frame to prevent the processing frame from directly tipping over and causing harm to the staff, thereby reducing safety hazards.

[0013] According to the above technical solution, a triangular block is fixedly installed on the surface of the push rod, a slide groove is provided on the surface of the processing frame, a blocking block is slidably installed inside the slide groove, and an end of the blocking block close to the triangular block is provided with a beveled surface five, and the blocking block is fixedly connected to the inner wall of the slide groove by an elastic telescopic rod two. After the blocking block moves, it is reset and the triangular block is limited, so that the support plate is fixed and the supporting force is maintained, to prevent the push rod from rebounding and reducing the supporting force, thereby causing squeezing to the staff, and further reducing safety hazards.

[0014] The present invention provides a material transport device for construction with a protective function. It has the following beneficial effects: (1) In the material transport device for construction, when the processing frame tilts during the pushing process, the No. 1 roller moves upward and drives the L-shaped rod to move through the receiving rod and the sliding plate. The movement of the L-shaped rod drives the sliding frame to move downward by squeezing the fixed block, thereby providing additional support for the processing frame and preventing the processing frame from further tilting, thereby reducing safety hazards. At the same time, the sliding frame moves downward and drives the No. 2 roller to contact the ground, converting the sliding connection into a rolling connection, thereby reducing the friction between the sliding frame and the ground and facilitating the transportation of materials.

[0015] (2) In the material transportation device for construction, during the material transportation process, the worker presses the sliding rod, and the sliding rod moves through the fixed rod and the metal wire to drive the slider to move and squeeze the lifting rod to move upward. The lifting rod moves upward and disengages from the limit rod on the surface of the roller, so that the roller can rotate. This can effectively prevent the processing frame from being offset when there are no workers to transport materials, thereby improving the efficiency of transportation. At the same time, during transportation, the limit rod contacts and squeezes the lifting rod to move upward, which can effectively limit the moving speed of the processing frame, avoid excessive movement speed and collision with foreign objects and thus rollover, thereby reducing safety hazards.

[0016] (3) In the material transportation device for construction, the lifting rod moves upward to drive the slide plate to slide inside the speed limit frame. The sliding of the slide plate squeezes the air inside the speed limit frame and resets under the action of spring three, further increasing the speed limit of the No. 1 roller, maintaining the speed stability during material transportation, avoiding rollover when the ground environment is harsh, and reducing safety hazards. At the same time, the slide plate moves upward to allow air to enter the speed limit frame through the one-way valve. The slide plate moves downward to open the baffle through the moving plate and the connecting rod, allowing air to be discharged to clean the surface of the roller, avoiding small stones or other foreign objects from being stuck between the limit rods, and maintaining stability during material transportation.

[0017] (4) For the material transportation device used in construction, when the processing frame is tilted to a certain angle, the fixed block moves downward to drive the stopper bar to move through the pressure rod and the receiving block. The movement of the stopper bar releases the limit on the push rod, so that the push rod pops out under the action of spring four and opens the support plate to provide support for the processing frame, thereby preventing the processing frame from directly tipping over and causing harm to the workers, thus reducing safety hazards. At the same time, the push rod drives the triangular block to move and squeeze the stopper block and is limited, so that the support plate is fixed and the support strength is maintained, thereby preventing the push rod from rebounding and reducing the support strength, thereby squeezing the workers, further reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram of part A in the middle; Figure 4 This is a schematic diagram of the position structure of the L-shaped rod and the sliding frame of the present invention; Figure 5 This is a schematic diagram of the position structure of the No. 1 roller and the fixed frame of the present invention; Figure 6 For the present invention Figure 2 The enlarged structural diagram of part B in the middle; Figure 7 This is a schematic diagram of the internal structure of the fixing frame of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram of the middle C part; Fig. 9 It is a schematic diagram of the position structure of the support plate and the support plate of the present invention.

[0019] In the figure: 1. processing frame; 2. push handle; 31. fixed frame; 32. receiving rod; 33. roller No. 1; 34. sliding plate; 35. L-shaped rod; 36. sliding frame; 37. fixed block; 38. roller No. 2; 41. sleeve; 42. sliding rod; 43. fixed rod; 44. slider; 45. lifting rod; 46. limiting rod; 51. speed limit frame; 52. slide plate; 53. exhaust pipe; 54. moving plate; 55. connecting rod; 56. baffle; 61. supporting plate; 62. push rod; 63. supporting plate; 64. pressure rod; 65. baffle rod; 66. receiving block; 67. triangular block; 68. blocking block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-7 One embodiment of the present invention is: a material transportation device for construction with a protective function, including a processing frame 1 and a push handle 2, the push handle 2 is fixedly installed on the surface of the processing frame 1, and also includes an anti-tilting device and a limiting device; wherein the anti-dumping device includes a fixed frame 31, a receiving rod 32, a No. 1 roller 33, a sliding plate 34, an L-shaped rod 35, a sliding frame 36 and a fixed block 37, the No. 1 roller 33 moves upward to drive the receiving rod 32 to move upward, the receiving rod 32 moves upward to drive the sliding plate 34 to move upward, the sliding plate 34 moves upward to contact and squeeze the L-shaped rod 35 to move, the fixed frame 31 is fixedly installed below the processing frame 1, the receiving rod 32 is slidably installed on the inner wall of the fixed frame 31, and the No. 1 roller 33 is rotatably installed on the inner wall of the fixed frame 31. The surface of the receiving rod 32, the sliding plate 34 is fixedly installed above the receiving rod 32, the L-shaped rod 35 slides through the inner and outer walls of the fixed frame 31, the sliding frame 36 is slidably installed on the surface of the processing frame 1, and the fixed block 37 is fixedly installed on the surface of the sliding frame 36. The sliding plate 34 and the processing frame 1 are fixedly connected by a spring 1. The end of the L-shaped rod 35 close to the sliding plate 34 is provided with a beveled surface 1, and the end of the fixed block 37 close to the L-shaped rod 35 is provided with a beveled surface 2. The L-shaped rod 35 moves to contact and squeeze the fixed block 37 to move, and the fixed block 37 moves downward to drive the sliding frame 36 to move downward. The sliding frame 36 moves downward to provide additional support for the processing frame 1 to prevent the processing frame 1 from further tilting and thus causing it to tip over, thereby reducing safety hazards.

[0022] A clockwork spring 1 is provided between the sliding frame 36 and the processing frame 1, and a No. 2 roller 38 is rotatably installed inside the sliding frame 36. The sliding frame 36 moves downward to drive the No. 2 roller 38 to move downward, and the No. 2 roller 38 moves downward to contact the ground and roll, thereby converting the sliding connection into a rolling connection, reducing the friction between the sliding frame 36 and the ground, facilitating the transportation of materials when tilted, and improving the efficiency of transportation.

[0023] The limiting device includes a sleeve 41, a sliding rod 42, a fixed rod 43, a slider 44, a lifting rod 45 and a limiting rod 46. The sliding rod 42 is pressed to make it move inside the sleeve 41, and the movement of the sliding rod 42 drives the fixed rod 43 to move. The sleeve 41 is fixedly installed on the surface of the push handle 2, the sliding rod 42 is slidably installed inside the sleeve 41, the fixed rod 43 is fixedly installed on the surface of the sliding rod 42, the slider 44 is slidably installed above the sliding plate 34, the lifting rod 45 slides through the upper and lower walls of the sliding plate 34, the limiting rod 46 is fixedly installed on the surface of the No. 1 roller 33, the fixing rod 43 and the slider 44 are fixedly connected by a metal wire, and the upper part of the slider 44 is provided with an oblique section three. The fixing rod 43 moves and drives the slider 44 to move through the metal wire, and the lifting rod 45 moves upward to release the limit on the limiting rod 46, so that the No. 1 roller 33 can rotate, which can effectively avoid the deviation of the processing frame 1 when there is no staff to transport materials, thereby improving the transportation efficiency.

[0024] The fixed rod 43 is fixedly connected to the push handle 2 by a spring sheet, a second spring is provided between the lifting rod 45 and the sliding plate 34, and the sliding block 44 is fixedly connected to the fixed frame 31 by a second spring. The rotation of the No. 1 roller 33 drives the limit rod 46 to rotate, and the limit rod 46 rotates to contact and squeeze the lifting rod 45 to move upward, thereby limiting the rotation speed of the No. 1 roller 33, avoiding excessive movement speed and collision with foreign objects to cause rollover, and reducing safety hazards.

[0025] When the present embodiment is working, when the processing frame 1 is tilted during transportation, the No. 1 roller 33 will be subjected to additional pressure and move upward when tilted, and the No. 1 roller 33 moves upward to drive the receiving rod 32 to move upward, and the receiving rod 32 moves upward to drive the sliding plate 34 to move upward, and the sliding plate 34 moves upward to contact and squeeze the L-shaped rod 35 to move, and the L-shaped rod 35 moves to contact and squeeze the fixed block 37 to move, and the fixed block 37 moves downward to drive the sliding frame 36 to move downward, and the sliding frame 36 moves downward to provide additional support for the processing frame 1 to prevent the processing frame 1 from further tilting and thus causing rollover, thereby reducing safety hazards, and at the same time, the sliding frame 36 moves downward to drive the No. 2 roller 38 to move downward, and the No. 2 roller 38 moves downward to contact and roll with the ground, thereby converting the sliding connection into a rolling connection, reducing the friction between the sliding frame 36 and the ground, and facilitating the transportation of materials when tilted.

[0026] During the material transportation process, the staff presses the sliding rod 42 to make it move inside the sleeve 41, and the movement of the sliding rod 42 drives the fixed rod 43 to move. The movement of the fixed rod 43 drives the slider 44 to move through the metal wire, and the slider 44 moves to contact and squeeze the lifting rod 45 to move upward. The lifting rod 45 moves upward to release the limit on the limit rod 46, so that the No. 1 roller 33 can rotate, which can effectively avoid the deviation of the processing frame 1 when there is no staff to transport materials, thereby improving the transportation efficiency. At the same time, the lifting rod 45 moves upward so that its arc surface enters the movement trajectory of the limit rod 46, and the No. 1 roller 33 rotates to drive the limit rod 46 to rotate, and the limit rod 46 rotates to contact and squeeze the lifting rod 45 to move upward, thereby limiting the rotation speed of the No. 1 roller 33, avoiding excessive movement speed and collision with foreign objects and thus rollover, thereby reducing safety hazards.

[0027] See also Figure 1-9 On the basis of the above embodiment, another embodiment of the present invention further includes a speed limiting device and an anti-pressure device, wherein the speed limiting device includes a speed limiting frame 51, a slide plate 52 and an exhaust pipe 53, the lifting rod 45 moves upward to drive the slide plate 52 to move upward, and the slide plate 52 moves upward to squeeze the air inside the speed limiting frame 51, the speed limiting frame 51 is fixedly installed below the sliding plate 34, and the slide plate 52 is slidably installed inside the speed limiting frame 51, the exhaust pipe 53 is fixedly penetrated through the inner and outer walls of the speed limiting frame 51, the lifting rod 45 slides through the inner and outer walls of the speed limiting frame 51, and the slide plate 52 is fixedly installed on the surface of the lifting rod 45, and the slide plate 52 is fixedly connected to the top of the inner wall of the speed limiting frame 51 through a spring three, and the lower part of the lifting rod 45 is provided with an arc surface one, and the slide plate 52 is reset under the action of the spring three, so as to further improve the speed limit of the No. 1 roller 33, maintain the speed stability during material transportation, avoid rollover when the ground environment is bad, and reduce safety hazards.

[0028] A moving plate 54 is slidably installed on the inner wall of the speed limit frame 51, a connecting rod 55 is fixedly installed below the moving plate 54, a baffle 56 is fixedly installed below the connecting rod 55, the moving plate 54 and the inner wall of the speed limit frame 51 are fixedly connected by an elastic telescopic rod, a one-way valve is fixedly installed on the surface of the speed limit frame 51, the baffle 56 moves downward to open the outlet of the exhaust pipe 53, and discharges the air under the slide plate 52, clearing the direction of the No. 1 roller 33 and the limiting rod 46 to prevent small stones or other foreign objects from being stuck between the limiting rod 46, thereby affecting the stability of the material transportation process and reducing the subsequent maintenance cost.

[0029] The anti-pressure device includes a support plate 61, a push rod 62, a support plate 63, a pressure rod 64, a stop rod 65 and a receiving block 66. The fixed block 37 moves downward to drive the pressure rod 64 to move downward. The pressure rod 64 moves downward to contact and squeeze the receiving block 66 to move. The receiving block 66 moves to drive the stop rod 65 to move. The support plate 61 is fixedly installed on the surface of the processing frame 1, the push rod 62 is slidably installed on the surface of the processing frame 1, the support plate 63 is rotatably installed on the surface of the processing frame 1, the pressure rod 64 is fixedly installed on the surface of the fixed block 37, and the stop rod 65 is fixedly installed on the surface of the fixed block 37. 5 slides through the inner and outer walls of the processing frame 1, the receiving block 66 is fixedly installed on the surface of the blocking rod 65, the push rod 62 and the supporting plate 61 are fixedly connected by a spring 4, the upper part of the push rod 62 is provided with an arc surface 2, the lower part of the supporting plate 63 is provided with an arc surface 3, and the surface of the receiving block 66 is provided with an oblique cut surface 4. The push rod 62 pops out under the action of the spring 4 and squeezes the supporting plate 63 to rotate. The rotation of the supporting plate 63 provides additional support for the processing frame 1, thereby preventing the processing frame 1 from directly tipping over to cause harm to the staff and reducing safety hazards.

[0030] A triangular block 67 is fixedly installed on the surface of the push rod 62, and a slide groove is provided on the surface of the processing frame 1. A blocking block 68 is slidably installed inside the slide groove. The end of the blocking block 68 close to the triangular block 67 is provided with a beveled surface five. The blocking block 68 is fixedly connected to the inner wall of the slide groove by an elastic telescopic rod two. After the blocking block 68 moves, it is reset and the triangular block 67 is limited, so that the support plate 63 is fixed and the supporting force is maintained, thereby preventing the push rod 62 from rebounding and reducing the supporting force, thereby squeezing the staff, and further reducing safety hazards.

[0031] When the present embodiment is working, the lifting rod 45 moves upward to drive the slide plate 52 to move upward. The slide plate 52 moves upward to squeeze the air inside the speed limit frame 51 and resets under the action of the spring three, further improving the speed limit of the No. 1 roller 33, maintaining the speed stability during material transportation, avoiding rollover when the ground environment is harsh, and reducing safety hazards. At the same time, the upward movement of the slide plate 52 will reduce the air pressure below it, and introduce the external air into the speed limit frame 51 through the one-way valve. The slide plate 52 resets and moves downward to contact and squeeze the moving plate 54 to move downward. The moving plate 54 moves downward to drive the connecting rod 55 to move downward. The connecting rod 55 moves downward to drive the baffle 56 to move downward. The baffle 56 moves downward to open the outlet of the exhaust pipe 53 and discharge the air below the slide plate 52, clearing the direction of the No. 1 roller 33 and the limiting rod 46, avoiding small stones or other foreign objects from being stuck between the limiting rod 46, thereby affecting the stability during material transportation and reducing subsequent maintenance costs.

[0032] When the processing frame 1 is tilted to a certain angle, the fixed block 37 moves downward and drives the pressure rod 64 to move downward. The pressure rod 64 moves downward to contact and squeeze the receiving block 66 to move. The receiving block 66 moves and drives the blocking rod 65 to move. The blocking rod 65 moves to release the limit on the push rod 62, so that the push rod 62 pops out under the action of the spring four and squeezes the support plate 63 to rotate. The rotation of the support plate 63 provides additional support for the processing frame 1 to prevent the processing frame 1 from directly tipping over and causing harm to the staff, thereby reducing safety hazards. At the same time, the movement of the push rod 62 drives the triangular block 67 to move. The triangular block 67 moves to contact and squeeze the blocking block 68 to move. After the blocking block 68 moves, it resets and limits the triangular block 67, so that the support plate 63 is fixed and the supporting force is maintained, so as to prevent the push rod 62 from rebounding and reducing the supporting force and causing squeezing to the staff, thereby further reducing safety hazards.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A material transport device for construction with a protective function, comprising a processing frame (1) and a push handle (2), wherein the push handle (2) is fixedly mounted on the surface of the processing frame (1), characterized in that: It also includes anti-tilt devices, position limiting devices, speed limiting devices and anti-pressure devices; The anti-dumping device comprises a fixed frame (31), a receiving rod (32), a first roller (33), a sliding plate (34), an L-shaped rod (35), a sliding frame (36) and a fixed block (37); the fixed frame (31) is fixedly mounted below the processing frame (1); the receiving rod (32) is slidably mounted on the inner wall of the fixed frame (31); the first roller (33) is rotatably mounted on the surface of the receiving rod (32); and the sliding plate (34) is fixedly mounted on the receiving rod (32). The L-shaped rod (35) slides through the inner and outer walls of the fixed frame (31), the sliding frame (36) is slidably mounted on the surface of the processing frame (1), the fixed block (37) is fixedly mounted on the surface of the sliding frame (36), the sliding plate (34) and the processing frame (1) are fixedly connected via a spring 1, the end of the L-shaped rod (35) close to the sliding plate (34) is provided with a beveled surface 1, and the end of the fixed block (37) close to the L-shaped rod (35) is provided with a beveled surface 2.

2. A material transport device for construction with a protective function according to claim 1, characterized in that: A spring 1 is provided between the sliding frame (36) and the processing frame (1), and a second roller (38) is rotatably mounted inside the sliding frame (36).

3. A material transport device for construction with a protective function according to claim 2, characterized in that: The limiting device comprises a sleeve (41), a sliding rod (42), a fixed rod (43), a slider (44), a lifting rod (45) and a limiting rod (46); the sleeve (41) is fixedly mounted on the surface of the push handle (2); the sliding rod (42) is slidably mounted inside the sleeve (41); the fixed rod (43) is fixedly mounted on the surface of the sliding rod (42); the slider (44) is slidably mounted above the sliding plate (34); the lifting rod (45) slides through the upper and lower walls of the sliding plate (34); the limiting rod (46) is fixedly mounted on the surface of the first roller (33); the fixed rod (43) and the slider (44) are fixedly connected by a metal wire; and a third beveled surface is provided above the slider (44).

4. A material transport device for construction with a protective function according to claim 3, characterized in that: The fixing rod (43) and the push handle (2) are fixedly connected via a spring sheet, a second spring is provided between the lifting rod (45) and the sliding plate (34), and the sliding block (44) and the fixing frame (31) are fixedly connected via a second spring.

5. A material transport device for construction with a protective function according to claim 4, characterized in that: The speed limiting device comprises a speed limiting frame (51), a slide plate (52) and an exhaust pipe (53); the speed limiting frame (51) is fixedly mounted below the sliding plate (34); the slide plate (52) is slidably mounted inside the speed limiting frame (51); the exhaust pipe (53) is fixedly penetrated through the inner and outer walls of the speed limiting frame (51); the lifting rod (45) is slidably penetrated through the inner and outer walls of the speed limiting frame (51); the slide plate (52) is fixedly mounted on the surface of the lifting rod (45); the slide plate (52) is fixedly connected to the top of the inner wall of the speed limiting frame (51) by a spring three; and the lower part of the lifting rod (45) is provided with an arc surface one.

6. A material transport device for construction with a protective function according to claim 5, characterized in that: A movable plate (54) is slidably mounted on the inner wall of the speed limit frame (51), a connecting rod (55) is fixedly mounted below the movable plate (54), a baffle (56) is fixedly mounted below the connecting rod (55), the movable plate (54) and the inner wall of the speed limit frame (51) are fixedly connected via an elastic telescopic rod, and a one-way valve is fixedly mounted on the surface of the speed limit frame (51).

7. A material transport device for construction with a protective function according to claim 6, characterized in that: The anti-pressure device comprises a support plate (61), a push rod (62), a support plate (63), a pressure rod (64), a blocking rod (65) and a receiving block (66); the support plate (61) is fixedly mounted on the surface of the processing frame (1); the push rod (62) is slidably mounted on the surface of the processing frame (1); the support plate (63) is rotatably mounted on the surface of the processing frame (1); the pressure rod (64) is fixedly mounted on the surface of the fixed block (37); the blocking rod (65) slides through the inner and outer walls of the processing frame (1); the receiving block (66) is fixedly mounted on the surface of the blocking rod (65); the push rod (62) and the support plate (61) are fixedly connected by a spring four; the upper portion of the push rod (62) is provided with an arc surface two; the lower portion of the support plate (63) is provided with an arc surface three; and the surface of the receiving block (66) is provided with an oblique cut surface four.

8. The material transport device for construction with protective function according to claim 7, characterized in that: A triangular block (67) is fixedly mounted on the surface of the push rod (62), a sliding groove is provided on the surface of the processing frame (1), a blocking block (68) is slidably mounted inside the sliding groove, an end of the blocking block (68) close to the triangular block (67) is provided with a beveled surface five, and the blocking block (68) is fixedly connected to the inner wall of the sliding groove via an elastic telescopic rod two.

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