Downward grabbing type grabbing and clamping device

Abstract

The utility model discloses a lower grabbing type grabbing and clamping device which comprises a telescopic mechanism and two clamping arm assemblies, the two ends of the telescopic mechanism are connected with the two clamping arm assemblies respectively, pin shafts are fixedly installed on the clamping arm assemblies, clamping plate assemblies are installed on the pin shafts, and each clamping plate assembly comprises a connecting plate, a clamping plate frame and an anti-skid base plate. The pin shaft penetrates through the connecting plate, the clamping plate frame is fixedly connected with the connecting plate, the anti-skid base plate is fixedly installed on the clamping plate frame, and the anti-skid base plate and the connecting plate are arranged on the two sides of the clamping plate frame respectively. The brick clamping device has the advantages that when an angle difference exists between the two side walls of a brick, the clamping plate assembly can deflect on the pin shaft, the anti-skid base plate can be attached to the side walls of the brick, a workpiece can be clamped more stably, and the brick clamping stability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of grabbing and clamping devices, in particular to a bottom-grabbing type grabbing and clamping device. Background Art

[0002] In the production and use of bricks, due to the heavy weight of bricks, a forklift is required for transportation. In the prior art, a brick clamp is installed on a forklift to grab the bricks, and then the forklift is used to transport the bricks to a designated location, thereby achieving the transportation of the bricks.

[0003] The Chinese utility model with the announcement number CN211254364U discloses a brick clamping device used in conjunction with a forklift, including a forklift provided with a lifting frame and a clamp, the lifting frame of the forklift is provided with a guide rail frame, the clamp includes a mounting frame, the upper and lower ends of the mounting frame are provided with guide rail grooves matching the guide rail frame, and the guide rail grooves are slidably sleeved on the guide rail frame. It replaces the heavy labor of manual loading and unloading of bricks, improves the efficiency of loading and unloading of bricks, saves the labor cost of the factory, and is conducive to improving the production efficiency of the factory.

[0004] Due to certain errors in the production process of bricks, the two side walls of bricks often have a certain angle difference. In a brick pile formed by stacking multiple bricks, if debris or brick fragments fall between two bricks, it will also cause an angle difference on the side walls of the edge bricks. Since the clamping plate of the brick clamping device used with the forklift cannot adapt to the angle adjustment of the brick side wall, the clamping plate cannot stably clamp the brick, resulting in a problem of poor stability in clamping the brick. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a down-grabbing clamping device, which includes a telescopic mechanism and a clamping arm assembly. The down-grabbing clamping device has the advantage of good stability in clamping bricks.

[0006] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0007] A lower-grabbing clamping device comprises a telescopic mechanism and two clamping arm assemblies, wherein the two ends of the telescopic mechanism are respectively connected to the two clamping arm assemblies, the clamping arm assembly is fixedly installed with a pin shaft, the pin shaft is installed with a clamping plate assembly, the clamping plate assembly comprises a connecting plate, a clamping plate frame and an anti-skid pad, the pin shaft is passed through the connecting plate, the clamping plate frame is fixedly connected to the connecting plate, the anti-skid pad is fixedly installed on the clamping plate frame, and the anti-skid pad and the connecting plate are respectively arranged on both sides of the clamping plate frame.

[0008] Through such an arrangement: when there is an angle difference between the two side walls of the brick, the clamping plate assembly can deflect on the pin shaft, so that the anti-slip pad can fit the side wall of the brick, thereby clamping the workpiece more stably and achieving the advantage of better stability in clamping the brick.

[0009] Preferably, the pin sleeve is provided with a torsion spring, and two ends of the torsion spring are fixedly connected to the connecting plate and the pin respectively.

[0010] Through such an arrangement, it is convenient to align the anti-slip pad with the side wall of the brick, thereby facilitating the clamping of the brick.

[0011] Preferably, the clamp arm assembly is fixedly connected to a fixing plate, the fixing plate is fixedly connected to a cylinder body, an arc-shaped cavity is provided in the cylinder body, the arc-shaped cavity as a whole is an arc with the axis of the pin shaft as the center, a piston is slidably connected in the arc-shaped cavity, the piston is provided with an arc-shaped surface which fits the inner wall of the cylinder body, a connecting pipe is installed in the cylinder body, both ends of the connecting pipe are respectively connected to the two ends of the arc-shaped cavity, a valve is installed in the connecting pipe, the piston is fixedly connected to a support rod extending out of the cylinder body, and the support rod is fixedly connected to the clamp frame.

[0012] Through such an arrangement, the angles of the clamping plate frame and the anti-skid pad are locked, thereby preventing the anti-skid pad from accidentally deflecting during the process of clamping bricks, thereby improving the stability when clamping bricks.

[0013] Preferably, a pressure sensor is provided between the anti-slip pad and the clamping plate frame, and the pressure sensor is fixedly mounted on the clamping plate frame. The pressure sensor is located on one side of the anti-slip pad close to the middle of the clamping plate frame.

[0014] Through such an arrangement, the function of detecting whether the anti-slip pad is clamping the bricks is achieved.

[0015] Preferably, a control unit is further included, the valve is a solenoid valve, and the control unit is electrically connected to the pressure sensor and the valve respectively.

[0016] Through such an arrangement, the valve can be automatically closed after the anti-slip pad clamps the bricks, which makes it convenient to use.

[0017] Preferably, a clamping indicator light is fixedly mounted on the upper end of the clamping arm assembly, the clamping indicator light is electrically connected to a power switch, and the control unit is electrically connected to the power switch.

[0018] Through such an arrangement: the indicator light is lit to facilitate the forklift driver to judge whether the bricks are clamped.

[0019] Preferably, the piston is provided with a sealing ring located at the arc surface, and the sealing ring abuts against the inner wall of the cylinder body.

[0020] Such an arrangement can improve the sealing performance of the piston.

[0021] Preferably, the clamp arm assembly is fixedly connected to a bracket, and the bracket is located above the clamp plate assembly.

[0022] Such an arrangement can improve the stability of the bricks when they are clamped.

[0023] Preferably, the telescopic mechanism comprises a telescopic arm, a telescopic sleeve and a telescopic driving member, the telescopic arm is slidably connected to the telescopic sleeve, and two ends of the telescopic driving member are respectively fixedly connected to the telescopic arm and the telescopic sleeve.

[0024] Through such an arrangement, the functions of extending and shortening the telescopic mechanism are achieved.

[0025] Preferably, one of the clamp arm assemblies is fixedly connected to a forklift connecting frame.

[0026] This arrangement makes it easier to install the clamping device on a forklift.

[0027] Compared with the prior art, the utility model has achieved beneficial technical effects:

[0028] 1. When there is an angle difference between the two side walls of the brick, the clamping plate assembly can deflect on the pin shaft so that the anti-slip pad can fit the side wall of the brick, thereby clamping the workpiece more stably and achieving the advantage of better stability in clamping the brick.

[0029] 2. When the anti-skid pad is not in contact with the side wall of the brick, open the valve, and the hydraulic oil at both ends of the arc cavity can flow through the connecting pipe, so that the piston can move in the arc cavity with the rotation of the anti-skid pad. When the anti-skid pad is in contact with the side wall of the brick, close the valve, and the hydraulic oil in the arc cavity organizes the piston to move in the arc cavity, so that the piston fixes the clamp frame and the anti-skid pad to the clamp arm assembly through the support rod, so as to lock the angle of the clamp frame and the anti-skid pad, prevent the anti-skid pad from accidentally deflecting in the process of clamping the brick, and improve the stability when clamping the brick. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a lower gripping clamping device in an embodiment of the utility model;

[0031] Figure 2 It is a structural schematic diagram of a cylinder body and a piston in an embodiment of the utility model;

[0032] Figure 3 It is a schematic diagram of the connection structure of the control element of the embodiment of the utility model.

[0033] The technical features indicated by the reference numerals are as follows:

[0034] 11. Clamp arm assembly; 12. Pin shaft; 13. Bracket; 14. Telescopic arm; 15. Telescopic sleeve; 16. Telescopic drive member; 17. Forklift connecting frame; 21. Connecting plate; 22. Clamp frame; 23. Anti-skid pad; 24. Torsion spring; 31. Fixed plate; 32. Cylinder body; 33. Arc cavity; 34. Piston; 35. Arc surface; 36. Connecting pipe; 37. Valve; 38. Support rod; 39. Sealing ring; 41. Pressure sensor; 42. Control unit; 43. Clamp indicator light; 44. Power switch. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments, but the scope of protection claimed in the utility model is not limited to the following specific embodiments.

[0036] refer to Figure 1 and Figure 2 A lower gripping clamping device includes a telescopic mechanism, a control unit 42 and two clamp arm assemblies 11, each clamp arm assembly is composed of two clamp arms, and the two ends of the telescopic mechanism are respectively connected to the two clamp arm assemblies 11. The telescopic mechanism includes a telescopic arm 14, a telescopic sleeve 15 and a telescopic driving member 16, the telescopic arm 14 is slidably connected to the telescopic sleeve 15, and the two ends of the telescopic driving member 16 are respectively fixedly connected to the telescopic arm 14 and the telescopic sleeve 15, and the telescopic driving member 16 is a hydraulic cylinder. The telescopic driving member 16 drives the telescopic arm 14 to slide on the telescopic sleeve 15, thereby realizing the function of extending and shortening the telescopic mechanism.

[0037] The clamp arm assembly 11 is fixedly mounted with a pin shaft 12, and the pin shaft 12 is mounted with a clamp plate assembly. The clamp plate assembly includes a connecting plate 21, a clamp plate frame 22, and an anti-skid pad 23. The pin shaft 12 is passed through the connecting plate 21, and the connecting plate 21 is rotatably mounted on the pin shaft 12. The clamp plate frame 22 is fixedly connected to the connecting plate 21, and the anti-skid pad 23 is fixedly mounted on the clamp plate frame 22. The anti-skid pad 23 and the connecting plate 21 are respectively arranged on both sides of the clamp plate frame 22. The pin shaft 12 is sleeved with a torsion spring 24, and the two ends of the torsion spring 24 are respectively fixedly connected to the connecting plate 21 and the pin shaft 12.

[0038] The clamping arm assembly 11 is fixedly connected to a fixing plate 31, and the fixing plate 31 is fixedly connected to a cylinder body 32. An arc cavity 33 is provided in the cylinder body 32. The arc cavity 33 is an arc with the axis of the pin 12 as the center. A piston 34 is slidably connected in the arc cavity 33. The piston 34 is provided with an arc surface 35 that fits the inner wall of the cylinder body 32. A connecting pipe 36 is installed in the cylinder body 32. Both ends of the connecting pipe 36 are respectively connected to both ends of the arc cavity 33. A valve 37 is installed in the connecting pipe 36. The piston 34 is fixedly connected to a support rod 38 extending out of the cylinder body 32. The support rod 38 is fixedly connected to the clamping plate frame 22. Hydraulic oil is provided in the arc cavity 33.

[0039] The piston 34 is provided with a sealing ring 39 located at the arc surface 35, and the sealing ring 39 abuts against the inner wall of the cylinder body 32. The sealing ring 39 blocks the gap between the piston 34 and the cylinder body 32, and prevents the hydraulic oil from passing through the gap between the piston 34 and the cylinder body 32, thereby improving the sealing performance of the piston 34.

[0040] The clamp arm assembly 11 is fixedly connected to a bracket 13, and the bracket 13 is located above the clamp plate assembly. The bracket 13 can provide support force to the upper end of the brick, thereby improving the stability of the brick when it is clamped. One of the clamp arm assemblies 11 is fixedly connected to a forklift connecting frame 17. The forklift connecting frame 17 is provided to facilitate the installation of the clamping device on a forklift.

[0041] refer to Figure 1 and Figure 3 A pressure sensor 41 is provided between the anti-skid pad 23 and the clamping plate frame 22. The pressure sensor 41 is fixedly mounted on the clamping plate frame 22. The pressure sensor 41 is located on one side of the anti-skid pad 23 near the middle of the clamping plate frame 22. The valve 37 is a solenoid valve, and the control unit 42 is electrically connected to the pressure sensor 41 and the valve 37, respectively. A clamping indicator light 43 is fixedly mounted on the upper end of the clamping arm assembly 11. The clamping indicator light 43 is electrically connected to a power switch 44, and the control unit 42 is electrically connected to the power switch 44. The control unit 42 is used to control the valve 37 to close after receiving a detection signal from the pressure sensor 41, and to turn on the power switch 44 electrically connected to the clamping indicator light 43. The control unit 42, the power switch 44 and the solenoid valve are all electrically connected to the vehicle-mounted power supply on the forklift, and are powered by the vehicle-mounted power supply. In this embodiment, the control unit 42 adopts a single-chip microcomputer.

[0042] The extension of the telescopic mechanism drives the distance between the two clamp arm assemblies 11 to increase, and the clamp arm assemblies 11 are moved so that the brick is located between the two clamp arm assemblies 11. The telescopic mechanism is shortened again and drives the two clamp arm assemblies 11 to move toward the brick, and the clamp plate assembly clamps the brick, thereby realizing the function of clamping the brick. At this time, the pressure sensor 41 is subjected to pressure and sends a detection signal to the control unit 42. The control unit 42 sends a control signal to control the valve 37 to close and the power switch 44 to open, so that the angle of the anti-skid pad 23 is locked to prevent the anti-skid pad 23 from accidentally deflecting. At the same time, the clamping indicator light 43 is illuminated to remind the driver that the brick is in a clamped state.

[0043] This embodiment has the following advantages:

[0044] When there is an angle difference between the two side walls of the brick, the clamping plate assembly can deflect on the pin shaft 12, so that the anti-slip pad 23 can fit the side wall of the brick, thereby clamping the workpiece more stably and achieving the advantage of better stability in clamping the brick.

[0045] The torsion spring 24 provides supporting elastic force on the connecting plate 21, so that the clamping plate frame 22 and the anti-skid pad 23 remain in a vertical state when not subjected to external force, thereby facilitating the anti-skid pad 23 to be aligned with the side wall of the brick, thereby facilitating the clamping of the brick.

[0046] When the anti-skid pad 23 is not in contact with the side wall of the brick, the valve 37 is opened, and the hydraulic oil at both ends of the arc cavity 33 can flow through the connecting pipe 36, so that the piston 34 can move in the arc cavity 33 with the rotation of the anti-skid pad 23. When the anti-skid pad 23 is in contact with the side wall of the brick, the valve 37 is closed, and the hydraulic oil in the arc cavity 33 organizes the piston 34 to move in the arc cavity 33, so that the piston 34 fixes the clamping plate frame 22 and the anti-skid pad 23 to the clamping arm assembly 11 through the support rod 38, so as to achieve the effect of locking the angle of the clamping plate frame 22 and the anti-skid pad 23, and prevent the anti-skid pad 23 from accidentally deflecting in the process of clamping the brick, so as to improve the stability when clamping the brick.

[0047] When the anti-skid pad 23 clamps the brick, the pressure sensor 41 sends out a detection signal after receiving the pressure, thereby realizing the function of detecting whether the anti-skid pad 23 clamps the brick.

[0048] When the anti-skid pad 23 is not in contact with the brick, since the anti-skid pad 23 is relatively inclined to the side wall of the brick, only the anti-skid pad 23 located at the edge of the clamping frame 22 can contact the brick, and the pressure on the pressure sensor 41 is relatively small. When the anti-skid pad 23 is in contact with the brick and clamped, the anti-skid pad 23 close to the middle of the clamping frame 22 can contact the brick. At this time, the pressure on the pressure sensor 41 is relatively large, thereby ensuring that the pressure sensor 41 can accurately detect that the anti-skid pad 23 is in contact with the side wall of the brick and clamps the brick, thereby improving reliability.

[0049] After the control unit 42 collects the detection signal sent by the pressure sensor 41, it controls the valve 37 to close, so that the valve 37 can be automatically closed after the anti-slip pad 23 clamps the bricks, which makes it convenient to use.

[0050] After the anti-skid pad 23 clamps the brick, the control unit 42 turns on the power switch 44 to make the clamping indicator light 43 light up, thereby facilitating the forklift driver to judge whether the brick is clamped and preventing the brick from sliding off the anti-skid pad 23 when it is not clamped.

[0051] According to the disclosure and teaching of the above specification, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A downward-grabbing clamping device, characterized in that: The invention comprises a telescopic mechanism and two clamp arm assemblies (11), wherein two ends of the telescopic mechanism are respectively connected to the two clamp arm assemblies (11), the clamp arm assembly (11) is fixedly mounted with a pin shaft (12), the pin shaft (12) is mounted with a clamp plate assembly, the clamp plate assembly comprises a connecting plate (21), a clamp plate frame (22) and an anti-skid pad (23), the pin shaft (12) is passed through the connecting plate (21), the clamp plate frame (22) is fixedly connected to the connecting plate (21), the anti-skid pad (23) is fixedly mounted on the clamp plate frame (22), the anti-skid pad (23) and the connecting plate (21) are respectively arranged on two sides of the clamp plate frame (22), the pin shaft (12) is sleeved with a torsion spring (24), and the two ends of the torsion spring (24) are respectively fixedly connected to the connecting plate (21) and the pin shaft (12).

2. The bottom-grabbing clamping device according to claim 1 is characterized in that: The clamp arm assembly (11) is fixedly connected to a fixing plate (31), and the fixing plate (31) is fixedly connected to a cylinder body (32). An arc cavity (33) is provided in the cylinder body (32), and the arc cavity (33) is in an arc shape with the axis of the pin shaft (12) as the center. A piston (34) is slidably connected in the arc cavity (33), and the piston (34) is provided with an arc surface (35) that fits the inner wall of the cylinder body (32). The cylinder body (32) is equipped with a connecting pipe (36), and the two ends of the connecting pipe (36) are respectively connected to the two ends of the arc cavity (33). The connecting pipe (36) is equipped with a valve (37). The piston (34) is fixedly connected to a support rod (38) extending out of the cylinder body (32), and the support rod (38) is fixedly connected to the clamp frame (22).

3. The bottom-grabbing clamping device according to claim 2 is characterized in that: A pressure sensor (41) is provided between the anti-slip pad (23) and the clamping plate frame (22). The pressure sensor (41) is fixedly mounted on the clamping plate frame (22). The pressure sensor (41) is located on one side of the anti-slip pad (23) close to the middle of the clamping plate frame (22).

4. The bottom-grabbing clamping device according to claim 3 is characterized in that: It also includes a control unit (42), the valve (37) is a solenoid valve, and the control unit (42) is electrically connected to the pressure sensor (41) and the valve (37) respectively.

5. The bottom-grabbing clamping device according to claim 4 is characterized in that: A clamping indicator light (43) is fixedly mounted on the upper end of the clamping arm assembly (11); the clamping indicator light (43) is electrically connected to a power switch (44); and the control unit (42) is electrically connected to the power switch (44).

6. The bottom-grabbing clamping device according to claim 2, characterized in that: The piston (34) is provided with a sealing ring (39) located at the arc surface (35), and the sealing ring (39) abuts against the inner wall of the cylinder body (32).

7. The bottom-grabbing clamping device according to claim 1 is characterized in that: The clamp arm assembly (11) is fixedly connected to a bracket (13), and the bracket (13) is located above the clamp plate assembly.

8. The bottom-grabbing clamping device according to claim 1 is characterized in that: The telescopic mechanism comprises a telescopic arm (14), a telescopic sleeve (15) and a telescopic driving member (16); the telescopic arm (14) is slidably connected to the telescopic sleeve (15); and two ends of the telescopic driving member (16) are respectively fixedly connected to the telescopic arm (14) and the telescopic sleeve (15).

9. The bottom-grabbing clamping device according to claim 1, characterized in that: One of the clamp arm assemblies (11) is fixedly connected to a forklift connecting frame (17).

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