Portable double board lifter

Abstract

The utility model discloses a portable double person board clamps, include: first board clamp and second board clamp are with the bearing frame rotation connection, and the first board clamp and second board clamp form the clamping plate space between, and the first board clamp and second board clamp rotate away, and the clamping plate space becomes big, and the first board clamp and second board clamp rotate close, and the clamping plate space becomes small, control pull rod is along the vertical direction and bearing frame sliding connection, transmission assembly is connected between control pull rod and first board clamp and second board clamp, and the first board clamp and second board clamp are driven away by the transmission assembly of upper pull control pull rod and rotate, reset subassembly is connected with first board clamp and second board clamp to drive the first board clamp and second board clamp rotate close. The utility model discloses the scheme through the board material gravity effect and reset subassembly mutual effect, and the first board clamp and second board clamp rotate close to each other, so that more and more tight, guarantee the stability of board material clamping, and the carrying personnel does not directly contact with the board material, and the safety is high, can satisfy the carrying demand of different board material.

Description

Technical Field

[0001] This utility model relates to the field of building decoration construction technology, specifically to a portable double-person lifting board clamp. Background Technology

[0002] In traditional construction sites, decorative panels such as wood veneer, glass panels, stone panels, and plastic panels are typically handled manually or using suction cups. The disadvantages of traditional handling methods are that manual lifting is not convenient enough, relying on the friction or lifting force of the hands, which is physically demanding and inefficient. At the same time, the handling personnel are prone to injury from contact with the panels. Suction cup handling cannot meet the handling needs of all types of panels. Utility Model Content This utility model provides a portable double-person lifting clamp. By pulling up the control rod in conjunction with the transmission component, the first and second clamps are driven to rotate away from each other, increasing the width of the clamping space and allowing the material to enter the clamping space. Releasing the control rod causes the first and second clamps to rotate closer together through the reset component. The first and second clamps hold the material. When moving the material, under the combined action of the material's gravity and the reset component, the first and second clamps tend to rotate closer together, clamping tighter and ensuring the stability of the material clamping. The material is convenient and quick to move, and the personnel do not have direct contact with the material, ensuring high safety and meeting the handling needs of different materials.

[0003] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: This utility model provides a portable double-person lifting board clamp, comprising: Support frame; The first clamp and the second clamp are rotatably connected to the bearing frame, and a clamping space is formed between the first clamp and the second clamp. When the first clamp and the second clamp rotate away from each other, the width of the clamping space increases. When the first clamp and the second clamp rotate towards each other, the width of the clamping space decreases. A control rod, which is slidably connected to the load-bearing frame in the vertical direction; A transmission assembly is connected between the control lever and the first and second clamps. Pulling the control lever upward causes the transmission assembly to rotate the first and second clamps away from each other. A reset assembly is connected to the first plate clamp and the second plate clamp to drive the first plate clamp and the second plate clamp to rotate and move closer to each other; A handle, which is connected to the support frame, is located above the control lever.

[0004] Optionally, the portable double-person lifting clamp also includes: A first fixed shaft is connected to the bearing frame, and the rotating part of the first plate clamp is rotatably connected to the first fixed shaft; The first arc-shaped groove is disposed through the bearing frame, and the center of the distribution circle of the first arc-shaped groove is located on the axis of the first fixed shaft. A first guide shaft, the first end of the first guide shaft is slidably engaged with the first arc-shaped groove, and the first guide shaft is connected to the transmission assembly and the reset assembly, and the arc-shaped clamping part of the first plate clamp is connected to the first guide shaft; The second fixed shaft is connected to the bearing frame, and the rotating part of the second plate clamp is rotatably connected to the second fixed shaft; The second arc-shaped groove extends through the support frame, and the center of the distribution circle of the second arc-shaped groove is located on the axis of the second fixed shaft. The second guide shaft is slidably engaged with the second arc-shaped groove, and the second guide shaft is connected to the transmission assembly and the reset assembly. The arc-shaped clamping part of the second plate clamp is connected to the second guide shaft.

[0005] Optionally, the transmission assembly includes: A drive belt, wherein a first end of the drive belt passes over multiple first reversing shafts, the first end of the drive belt extends horizontally and is connected to a first guide shaft, and a second end of the drive belt passes over multiple second reversing shafts, the second end of the drive belt extends horizontally and is connected to a second guide shaft; A drive shaft is slidably connected to the support frame in a vertical direction, and the drive shaft abuts against the bottom surface of the drive belt to pull the drive belt vertically upward. A connecting belt, the first end of which is fitted onto the outside of the drive shaft to pull the drive shaft vertically upward, and the second end of which is fitted onto the outside of the control lever.

[0006] Optionally, the transmission assembly further includes: Two limiting shafts are located above the drive shaft and are symmetrically distributed with respect to the axis of the drive shaft.

[0007] Optionally, a first connecting sleeve is formed at the first end of the drive belt, and the first connecting sleeve is fitted onto the outside of the first guide shaft; a second connecting sleeve is formed at the second end of the drive belt, and the second connecting sleeve is fitted onto the outside of the second guide shaft.

[0008] Optionally, the drive belt is a flexible toothed belt, and gears are fitted on the outer sides of the drive shaft, multiple first reversing shafts and multiple second reversing shafts, with multiple gears meshing with the drive belt.

[0009] Optionally, the support frame includes: The first frame and the second frame are arranged in parallel. The upper part of the first frame and the second frame are both connected to the handle. The drive shaft, multiple first reversing shafts, multiple second reversing shafts, the drive belt and the connecting belt are all located between the first frame and the second frame. Both the first frame and the second frame are provided with the first arc-shaped groove and the second arc-shaped groove through them. The first guide shaft and the second guide shaft are provided with the first limiting block and the second limiting block on their outer sides. The two first limiting blocks are in contact with the outer side of the first frame, and the two second limiting blocks are in contact with the outer side of the second frame.

[0010] Optionally, the portable double-person lifting clamp also includes: A guide plate is connected to the handle. The guide plate extends vertically and is parallel to the second frame. The inner wall of the guide plate is provided with a vertically extending guide groove. The second end of the control lever is slidably engaged with the guide groove. A through groove is provided through the outer side of the second frame. The through groove extends vertically, and the control rod passes through the through groove and is slidably engaged with the through groove. The first sink is located inside the first frame and extends vertically. The first end of the control rod slides in conjunction with the first sink. The connecting strap is fitted on the outside of the control rod located between the first frame and the second frame.

[0011] Optionally, a second sink groove is provided on the inner side of the second frame. The second sink groove extends vertically, and the first end of the drive shaft is slidably engaged with the first sink groove, and the second end of the drive shaft is slidably engaged with the second sink groove.

[0012] Optionally, the reset component includes: A first torsion spring is fitted on the outside of the first fixed shaft. The first end of the first torsion spring is welded to the first guide shaft, and the second end of the first torsion spring is welded to the bearing frame. The first fixed shaft, the first guide shaft, and the first torsion spring are all located in the inner cavity of the first plate clamp. The second torsion spring is fitted on the outside of the second fixed shaft. The first end of the second torsion spring is welded to the second guide shaft, and the second end of the second torsion spring is welded to the bearing frame. The second fixed shaft, the second guide shaft, and the second torsion spring are all located in the inner cavity of the second plate clamp.

[0013] The above-described solution of this utility model has at least the following beneficial effects: The above-described solution of this utility model uses an upward control lever in conjunction with a transmission assembly to drive the first and second clamps to rotate away from each other, thereby increasing the width of the clamping space and allowing the material to enter the clamping space. Releasing the control lever causes the reset assembly to drive the first and second clamps to rotate closer together. The first and second clamps hold the material, and during material handling, under the combined action of the material's gravity and the reset assembly, the first and second clamps tend to rotate closer together, clamping increasingly tightly to ensure the stability of the material clamping. This makes material handling convenient and quick, avoids direct contact between the handling personnel and the material, and ensures high safety, meeting the handling needs of different material types. Attached Figure Description

[0014] Figure 1 This is a front-view perspective three-dimensional structural diagram of the portable double-person lifting board clamp provided in an embodiment of this utility model; Figure 2 This is a front-view perspective three-dimensional structural diagram of the hidden clamp and the first frame of the portable double-person lifting clamp provided in an embodiment of this utility model. Figure 3 yes Figure 2 Enlarged schematic diagram of part A; Figure 4 yes Figure 2 Enlarged diagram of part B; Figure 5 This is a rear-view perspective three-dimensional structural diagram of the hidden second frame of the portable double-person lifting board clamp provided in an embodiment of this utility model. Figure 6 yes Figure 5 Enlarged schematic diagram of part C; Figure 7 yes Figure 5 Enlarged schematic diagram of part D; Figure 8 This is a rear view of the hidden second frame of the portable double-person lifting board clamp provided in an embodiment of this utility model.

[0015] The annotations in the attached figures are explained as follows: 1. Bearing frame; 11. First frame; 12. Second frame; 13. First arc groove; 14. Second arc groove; 15. Through groove; 16. Second recessed groove; 17. First recessed groove; 2. Handle; 21. Guide plate; 22. Guide groove; 3. Control lever; 41. First clamp; 42. Second clamp; 43. First fixed shaft; 44. First guide shaft; 45. Second fixed shaft; 46. Second guide shaft; 47. First limiting block; 48. Second limiting block; 49. Clamping space; 51. First torsion spring; 52. Second torsion spring; 61. Connecting belt; 62. Drive shaft; 63. First reversing shaft; 64. Drive belt; 641. First connecting sleeve; 642. Second connecting sleeve; 65. Second reversing shaft; 66. Limiting shaft; 67. Gear. Detailed Implementation

[0016] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0017] like Figures 1-8 As shown, this utility model provides a portable double-person lifting board clamp, comprising: Support frame 1; First clamp 41 and second clamp 42 are rotatably connected to the bearing frame 1. A clamping space 49 is formed between the first clamp 41 and the second clamp 42. When the first clamp 41 and the second clamp 42 rotate away from each other, the width of the clamping space 49 increases. When the first clamp 41 and the second clamp 42 rotate closer to each other, the width of the clamping space 49 decreases. Control rod 3 is slidably connected to the load-bearing frame 1 in the vertical direction; The transmission assembly is connected between the control lever 3 and the first clamp 41 and the second clamp 42. Pulling up the control lever 3 causes the transmission assembly to rotate the first clamp 41 and the second clamp 42 away from each other. A reset assembly is connected to the first clamp 41 and the second clamp 42 to drive the first clamp 41 and the second clamp 42 to rotate and move closer to each other. Handle 2 is connected to the support frame 1 and is located above the control lever 3.

[0018] In this embodiment, by holding the handle 2 and lifting the control lever 3 with the fingers, the first clamp 41 and the second clamp 42 are rotated away from each other by the transmission component, thereby increasing the width of the clamping space 49 and allowing the edge of the plate to enter the clamping space 49. After releasing the lifting control lever 3, the first clamp 41 and the second clamp 42 are rotated closer to each other by the reset component, so that the first clamp 41 and the second clamp 42 contact the two sides of the plate respectively, thereby clamping the plate. Under the action of gravity, the plate exerts a downward force on the first clamp 41 and the second clamp 42, which causes the first clamp 41 and the second clamp 42 to rotate closer to each other. Thus, under the combined action of the plate's gravity and the reset component, the first clamp 41 and the second clamp 42 tend to rotate closer to each other, clamping tighter and tighter, ensuring the stability of the plate clamping. When handling the boards, two operators each hold a portable double-handled board clamp. Through the above process, the two operators use the two portable double-handled board clamps to clamp the two sides of the board. The two operators hold handle 2 to handle the board. The board handling is convenient and quick. The handling personnel do not have direct contact with the board, which is safe and can meet the handling needs of different boards.

[0019] like Figures 2 to 4 As shown, in an optional embodiment of this utility model, the portable double-person lifting board clamp further includes: The first fixed shaft 43 is connected to the bearing frame 1, and the rotating part of the first plate clamp 41 is rotatably connected to the first fixed shaft 43. The first arc-shaped groove 13 is provided through the bearing frame 1, and the center of the distribution circle of the first arc-shaped groove 13 is located on the axis of the first fixed shaft 43. The first guide shaft 44 has its first end slidingly engaged with the first arc-shaped groove 13, and the first guide shaft 44 is connected to the transmission assembly and the reset assembly. The arc-shaped clamping part of the first plate clamp 41 is connected to the first guide shaft 44. The second fixed shaft 45 is connected to the bearing frame 1, and the rotating part of the second plate clamp 42 is rotatably connected to the second fixed shaft 45. The second arc-shaped groove 14 is provided through the bearing frame 1, and the center of the distribution circle of the second arc-shaped groove 14 is located on the axis of the second fixed shaft 45. The second guide shaft 46 is slidably engaged with the second arc-shaped groove 14, and the second guide shaft 46 is connected to the transmission assembly and the reset assembly. The arc-shaped clamping part of the second plate clamp 42 is connected to the second guide shaft 46.

[0020] In this embodiment, the first plate clamp 41 is rotatably mounted via the first fixed shaft 43, and the first guide shaft 44 is guided by the first arc groove 13, so that the first guide shaft 44 can drive the arc clamping part of the first plate clamp 41 to rotate around the first fixed shaft 43 as the axis; the transmission component is connected to the first guide shaft 44 to drive the first plate clamp 41 to rotate away from the second plate clamp 42 via the first guide shaft 44; the reset component is connected to the first guide shaft 44 to drive the first plate clamp 41 to rotate closer to the second plate clamp 42 via the first guide shaft 44. The second plate clamp 42 is rotatably mounted via the second fixed shaft 45, and the second guide shaft 46 is guided by the second arc-shaped groove 14, so that the second guide shaft 46 can drive the arc-shaped clamping part of the second plate clamp 42 to rotate around the second fixed shaft 45 as the axis; the transmission assembly is connected to the second guide shaft 46 to drive the second plate clamp 42 to rotate away from the first plate clamp 41 via the second guide shaft 46; the reset assembly is connected to the second guide shaft 46 to drive the second plate clamp 42 to rotate closer to the first plate clamp 41 via the second guide shaft 46.

[0021] like Figures 2 to 8 As shown, in an optional embodiment of the present invention, the transmission assembly includes: The drive belt 64 has a first end that passes over multiple first reversing shafts 63, the first end of the drive belt 64 extends horizontally and is connected to a first guide shaft 44, and the second end of the drive belt 64 passes over multiple second reversing shafts 65, the second end of the drive belt 64 extends horizontally and is connected to a second guide shaft 46. The drive shaft 62 is slidably connected to the support frame 1 in the vertical direction. The drive shaft 62 abuts against the bottom surface of the drive belt 64 to pull the drive belt 64 vertically upward. The connecting belt 61 has its first end fitted onto the outside of the drive shaft 62 to pull the drive shaft 62 vertically upward, and its second end fitted onto the outside of the control lever 3.

[0022] In this embodiment, lifting the control lever 3 causes the drive shaft 62 to rise via the connecting belt 61. When the drive shaft 62 rises, it pulls the drive belt 64 vertically upward. Under the reversing action of multiple first reversing shafts 63, the first end of the drive belt 64 pulls the first guide shaft 44 away from the second guide shaft 46. Under the reversing action of multiple second reversing shafts 65, the second end of the drive belt 64 pulls the second guide shaft 46 away from the first guide shaft 44. Thus, the first guide shaft 44 and the second guide shaft 46 respectively drive the first clamp 41 and the second clamp 42 to rotate away from each other.

[0023] like Figure 2 and Figure 5 As shown, in an optional embodiment of the present invention, the transmission assembly further includes: Two limiting shafts 66 are located above the drive shaft 62 and are symmetrically distributed with respect to the axis of the drive shaft 62.

[0024] In this embodiment, the drive belt 64 is limited and guided by two limiting shafts 66, so that the part of the drive belt 64 pulled by the transmission shaft 62 can rise vertically accurately, thereby ensuring the stability of the drive belt 64, and making the first end and the second end of the drive belt 64 stably pull the first guide shaft 44 and the second guide shaft 46 away from each other.

[0025] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, in an optional embodiment of the present invention, a first connecting sleeve 641 is formed at the first end of the drive belt 64, and the first connecting sleeve 641 is fitted on the outside of the first guide shaft 44. A second connecting sleeve 642 is formed at the second end of the drive belt 64, and the second connecting sleeve 642 is fitted on the outside of the second guide shaft 46.

[0026] In this embodiment, the first end of the drive belt 64 is movably connected to the first guide shaft 44 through the first connecting sleeve 641. When the first end of the drive belt 64 drives the first guide shaft 44 to move in the first arc groove 13, the connection angle between the first end of the drive belt 64 and the first guide shaft 44 can be changed, ensuring the driving effect of the first end of the drive belt 64 on the first guide shaft 44. The second end of the drive belt 64 is movably connected to the second guide shaft 46 through the second connecting sleeve 642. When the second end of the drive belt 64 drives the second guide shaft 46 to move within the second arc groove 14, the connection angle between the second end of the drive belt 64 and the second guide shaft 46 can be changed, ensuring the driving effect of the second end of the drive belt 64 on the second guide shaft 46.

[0027] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, in an optional embodiment of the present invention, the drive belt 64 is a flexible toothed belt, and gears 67 are fitted on the outer sides of the transmission shaft 62, multiple first reversing shafts 63 and multiple second reversing shafts 65, and the multiple gears 67 mesh with the drive belt 64.

[0028] In this embodiment, the drive belt 64 is a flexible toothed belt, and gears 67 are fitted on the outer sides of the drive shaft 62, multiple first reversing shafts 63 and multiple second reversing shafts 65. The multiple gears 67 mesh with the drive belt 64, which can reduce the wear on the drive belt 64 and extend the service life of the drive belt 64. Meanwhile, by engaging multiple gears 67 with the drive belt 64, the pulling rhythm control of the drive belt 64 can be achieved, thereby stably driving the first guide shaft 44 and the second guide shaft 46 away from each other, so as to achieve the rotation of the first clamp 41 and the second clamp 42 away from each other.

[0029] like Figure 1 , Figure 2 ,and Figure 5 As shown, in an optional embodiment of the present invention, the supporting frame 1 includes: The first frame 11 and the second frame 12 are arranged in parallel. The upper part of the first frame 11 and the second frame 12 are connected to the handle 2. The drive shaft 62, multiple first reversing shafts 63, multiple second reversing shafts 65, drive belt 64 and connecting belt 61 are all located between the first frame 11 and the second frame 12. A first arc-shaped groove 13 and a second arc-shaped groove 14 are provided through the first frame 11 and the second frame 12 respectively. A first limiting block 47 and a second limiting block 48 are provided on the outer side of the first guide shaft 44 and the second guide shaft 46 respectively. The two first limiting blocks 47 are in contact with the outer side of the first frame 11 and the two second limiting blocks 48 are in contact with the outer side of the second frame 12 respectively.

[0030] In this embodiment, the first frame 11 and the second frame 12 form a load-bearing frame 1, so that the drive shaft 62, multiple first reversing shafts 63, multiple second reversing shafts 65, drive belt 64 and connecting belt 61 are all located between the first frame 11 and the second frame 12, which can limit the drive belt 64 and ensure the stable movement of the drive belt 64, so that the first end and the second end of the drive belt 64 respectively stably drive the first guide shaft 44 and the second guide shaft 46 away from each other, so as to realize the rotation of the first clamp 41 and the second clamp 42 away from each other; A first limiting block 47 and a second limiting block 48 are provided on the outer sides of the first guide shaft 44 and the second guide shaft 46, respectively. The two first limiting blocks 47 are in contact with the outer side of the first frame 11, and the two second limiting blocks 48 are in contact with the outer side of the second frame 12. This can limit the first guide shaft 44 and the second guide shaft 46, prevent the first guide shaft 44 from disengaging from the first arc groove 13, and prevent the second guide shaft 46 from disengaging from the second arc groove 14. This ensures that the first guide shaft 44 and the second guide shaft 46 can move stably within the first arc groove 13 and the second arc groove 14, respectively, so as to ensure that the first clamp 41 and the second clamp 42 can rotate stably away from or towards each other.

[0031] like Figure 2 and Figure 5 As shown, in an optional embodiment of this utility model, the portable double-person lifting board clamp further includes: Guide plate 21 is connected to handle 2. Guide plate 21 extends vertically and is parallel to the second frame 12. The inner wall of guide plate 21 is provided with a vertically extending guide groove 22. The second end of control lever 3 slides in cooperation with guide groove 22. The through groove 15 extends vertically through the outer side of the second frame 12. The control rod 3 passes through the through groove 15 and slides with the through groove 15. The first sink 17 is located inside the first frame 11 and extends vertically. The first end of the control rod 3 slides in the first sink 17. The connecting strap 61 is fitted on the outside of the control rod 3 located between the first frame 11 and the second frame 12.

[0032] In this embodiment, the guide groove 22, the through groove 15 and the first recess 17 can limit and guide the control rod 3 in the vertical direction. At the same time, the guide groove 22 and the first recess 17 limit the two ends of the control rod 3 along the axial direction of the control rod 3, so as to realize the sliding connection between the control rod 3 and the bearing frame 1 in the vertical direction, so that the control rod 3 can slide stably in the vertical direction. Thus, by lifting the control rod 3, the transmission component can pull the first clamp 41 and the second clamp 42 to rotate away from each other.

[0033] like Figure 2 and Figure 5 As shown, in an optional embodiment of the present invention, a second sink 16 is provided on the inner side of the second frame 12. The second sink 16 extends vertically, and the first end of the transmission shaft 62 is slidably engaged with the first sink 17, and the second end of the transmission shaft 62 is slidably engaged with the second sink 16.

[0034] In this embodiment, the transmission shaft 62 is limited and guided by the first sink 17 and the second sink 16 to ensure that the transmission shaft 62 can rise and fall stably and vertically. Under the upward pulling action of the control rod 3 and the connecting belt 61, the transmission shaft 62 stably pulls the drive belt 64 upward, so that the first end and the second end of the drive belt 64 drive the first guide shaft 44 and the second guide shaft 46 away from each other, so that the first clamp 41 and the second clamp 42 rotate away from each other.

[0035] like Figure 2 As shown, in an optional embodiment of the present invention, the reset component includes: The first torsion spring 51 is fitted on the outside of the first fixed shaft 43. The first end of the first torsion spring 51 is welded to the first guide shaft 44, and the second end of the first torsion spring 51 is welded to the bearing frame 1. The first fixed shaft 43, the first guide shaft 44 and the first torsion spring 51 are all located in the inner cavity of the first plate clamp 41. The second torsion spring 52 is fitted on the outside of the second fixed shaft 45. The first end of the second torsion spring 52 is welded to the second guide shaft 46, and the second end of the second torsion spring 52 is welded to the bearing frame 1. The second fixed shaft 45, the second guide shaft 46, and the second torsion spring 52 are all located in the inner cavity of the second plate clamp 42.

[0036] In this embodiment, the first end of the first torsion spring 51 is welded to the first guide shaft 44 to push the first guide shaft 44 to move towards the second guide shaft 46 within the first arc groove 13; the first end of the second torsion spring 52 is welded to the second guide shaft 46 to push the second guide shaft 46 to move towards the first guide shaft 44 within the second arc groove 14; lifting the control lever 3 causes the transmission assembly to overcome the elastic force of the first torsion spring 51 and the second torsion spring 52, causing the first clamp 41 and the second clamp 42 to rotate away from each other; releasing the lifting control lever 3 causes the first end of the first torsion spring 51 to push the first guide shaft 44 to move towards the second guide shaft 46 within the first arc groove 13, and the first end of the second torsion spring 52 to push the second guide shaft 46 to move towards the first guide shaft 44 within the second arc groove 14, thereby causing the first clamp 41 and the second clamp 42 to rotate closer to each other; in specific applications, the second end of the first torsion spring 51 is welded to the first frame 11, and the second end of the second torsion spring 52 is welded to the second frame 12.

[0037] Portable two-person lifting clamp operation process: Holding handle 2, the user lifts control lever 3 with their fingers, overcoming the elastic force of the first torsion spring 51 and the second torsion spring 52. This causes connecting belt 61 to pull up drive shaft 62, which in turn pulls up drive belt 64. Under the guidance of multiple first reversing shafts 63, the first end of drive shaft 64 moves the first guide shaft 44 within the first arc groove 13 away from the second guide shaft 46. Under the guidance of multiple second reversing shafts 65, the second end of drive belt 64 moves the second guide shaft 46 within the second arc groove 14 away from the first guide shaft 44. This causes the first clamp 41 and the second clamp 42 to rotate away from each other, increasing the width of clamping space 49 and allowing the edge of the plate to enter clamping space 49. Releasing control lever 3 causes the first end of first torsion spring 51 to push the first guide shaft 44 within the first arc groove 13 towards the second guide shaft 46, and the first end of second torsion spring 52 to push the second guide shaft 46 within the second arc groove 14 towards the first guide shaft 46. 44 moves, causing the first clamp 41 and the second clamp 42 to rotate and approach each other, so that the first clamp 41 and the second clamp 42 respectively contact the two sides of the board, thus clamping the board. Under the action of gravity, the board exerts a downward force on the first clamp 41 and the second clamp 42, which causes the first clamp 41 and the second clamp 42 to rotate and approach each other. Thus, under the combined action of the board's gravity and the reset component, the first clamp 41 and the second clamp 42 have a tendency to rotate and approach each other, clamping tighter and tighter, ensuring the stability of the board clamping. When handling the board, two operators each hold a portable double-handled lifting clamp. Through the above process, the two operators use the two portable double-handled lifting clamps to clamp the two sides of the board. The two operators each hold the handle 2 to handle the board. The handling of the board is convenient and fast, and the handling personnel do not have direct contact with the board, which is safe and can meet the handling needs of different boards.

[0038] The portable double-person lifting clamp provided in the above embodiments of this utility model drives the first clamp 41 and the second clamp 42 to rotate away from each other by pulling up the control lever 3 in conjunction with the transmission component, thereby increasing the width of the clamping space 49 and allowing the material to enter the clamping space 49. When the control lever 3 is released, the first clamp 41 and the second clamp 42 are driven to rotate closer to each other by the reset component. The first clamp 41 and the second clamp 42 clamp the material. When the material is being transported, under the combined action of the material's gravity and the reset component, the first clamp 41 and the second clamp 42 tend to rotate closer to each other, clamping tighter and tighter, ensuring the stability of the material clamping. The material is convenient and quick to transport, and the transporters do not have direct contact with the material, resulting in high safety. It can meet the transport needs of different materials.

[0039] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A portable double-person lifting board clamp, characterized in that: include: Support frame (1); The first clamp (41) and the second clamp (42) are rotatably connected to the bearing frame (1). A clamping space (49) is formed between the first clamp (41) and the second clamp (42). When the first clamp (41) and the second clamp (42) rotate away from each other, the width of the clamping space (49) increases. When the first clamp (41) and the second clamp (42) rotate closer to each other, the width of the clamping space (49) decreases. A control rod (3) is slidably connected to the bearing frame (1) in the vertical direction; A transmission assembly is connected between the control lever (3) and the first plate clamp (41) and the second plate clamp (42). When the control lever (3) is pulled up, the transmission assembly drives the first plate clamp (41) and the second plate clamp (42) to rotate away from each other. A reset assembly is connected to the first plate clamp (41) and the second plate clamp (42) to drive the first plate clamp (41) and the second plate clamp (42) to rotate and move closer to each other; Handle (2), which is connected to the support frame (1), and is located above the control lever (3).

2. The portable double-person lifting clamp according to claim 1, characterized in that, Also includes: The first fixed shaft (43) is connected to the bearing frame (1), and the rotating part of the first plate clamp (41) is rotatably connected to the first fixed shaft (43); The first arc groove (13) is provided through the bearing frame (1), and the center of the distribution circle of the first arc groove (13) is located on the axis of the first fixed shaft (43). The first guide shaft (44) has a first end that slides into the first arc groove (13), and the first guide shaft (44) is connected to the transmission assembly and the reset assembly. The arc clamping part of the first plate clamp (41) is connected to the first guide shaft (44). The second fixed shaft (45) is connected to the bearing frame (1), and the rotating part of the second plate clamp (42) is rotatably connected to the second fixed shaft (45); The second arc groove (14) is provided through the bearing frame (1), and the center of the distribution circle of the second arc groove (14) is located on the axis of the second fixed shaft (45). The second guide shaft (46) is slidably engaged with the second arc groove (14), and the second guide shaft (46) is connected to the transmission assembly and the reset assembly. The arc clamping part of the second plate clamp (42) is connected to the second guide shaft (46).

3. The portable double-person lifting clamp according to claim 2, characterized in that, The transmission assembly includes: A drive belt (64) has a first end that passes over multiple first reversing shafts (63), the first end of the drive belt (64) extends horizontally and is connected to the first guide shaft (44), and the second end of the drive belt (64) passes over multiple second reversing shafts (65), the second end of the drive belt (64) extends horizontally and is connected to the second guide shaft (46). The drive shaft (62) is slidably connected to the bearing frame (1) in the vertical direction. The drive shaft (62) abuts against the bottom surface of the drive belt (64) to pull the drive belt (64) vertically upward. A connecting belt (61) is fitted at its first end to the outside of the drive shaft (62) to pull the drive shaft (62) vertically upward. The second end of the connecting belt (61) is fitted to the outside of the control lever (3).

4. The portable double-person lifting clamp according to claim 3, characterized in that, The transmission assembly also includes: Two limiting shafts (66) are located above the drive shaft (62) and are symmetrically distributed with respect to the axis of the drive shaft (62).

5. The portable double-person lifting clamp according to claim 3, characterized in that, The first end of the drive belt (64) is formed with a first connecting sleeve (641), which is fitted on the outside of the first guide shaft (44). The second end of the drive belt (64) is formed with a second connecting sleeve (642), which is fitted on the outside of the second guide shaft (46).

6. The portable double-person lifting clamp according to claim 3, characterized in that, The drive belt (64) is a flexible toothed belt. Gears (67) are fitted on the outer sides of the drive shaft (62), multiple first reversing shafts (63) and multiple second reversing shafts (65). Multiple gears (67) mesh with the drive belt (64).

7. The portable double-person lifting clamp according to claim 3, characterized in that, The supporting frame (1) includes: The first frame (11) and the second frame (12) are arranged in parallel. The upper parts of the first frame (11) and the second frame (12) are connected to the handle (2). The drive shaft (62), multiple first reversing shafts (63), multiple second reversing shafts (65), the drive belt (64) and the connecting belt (61) are all located between the first frame (11) and the second frame (12). The first frame (11) and the second frame (12) are both provided with the first arc groove (13) and the second arc groove (14). The first guide shaft (44) and the second guide shaft (46) are both provided with the first limiting block (47) and the second limiting block (48) on their outer sides. The two first limiting blocks (47) are in contact with the outer side of the first frame (11), and the two second limiting blocks (48) are in contact with the outer side of the second frame (12).

8. The portable double-person lifting clamp according to claim 7, characterized in that, Also includes: Guide plate (21), the guide plate (21) is connected to the handle (2), the guide plate (21) extends vertically and is parallel to the second frame (12), the inner wall of the guide plate (21) is provided with a vertically extending guide groove (22), and the second end of the control lever (3) slides in cooperation with the guide groove (22); A through groove (15) is provided through the outside of the second frame (12). The through groove (15) extends vertically. The control rod (3) passes through the through groove (15) and slides with the through groove (15). The first sink (17) is located inside the first frame (11) and extends vertically. The first end of the control rod (3) is slidably engaged with the first sink (17). The connecting strap (61) is fitted on the outside of the control rod (3) located between the first frame (11) and the second frame (12).

9. The portable double-person lifting clamp according to claim 8, characterized in that, The second frame (12) has a second sink (16) on its inner side. The second sink (16) extends vertically. The first end of the drive shaft (62) is slidably engaged with the first sink (17), and the second end of the drive shaft (62) is slidably engaged with the second sink (16).

10. The portable double-person lifting clamp according to claim 2, characterized in that, The reset component includes: The first torsion spring (51) is fitted on the outside of the first fixed shaft (43). The first end of the first torsion spring (51) is welded to the first guide shaft (44), and the second end of the first torsion spring (51) is welded to the bearing frame (1). The first fixed shaft (43), the first guide shaft (44) and the first torsion spring (51) are all located in the inner cavity of the first plate clamp (41). The second torsion spring (52) is fitted on the outside of the second fixed shaft (45). The first end of the second torsion spring (52) is welded to the second guide shaft (46), and the second end of the second torsion spring (52) is welded to the bearing frame (1). The second fixed shaft (45), the second guide shaft (46) and the second torsion spring (52) are all located in the inner cavity of the second plate clamp (42).

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