Mechanical clamp for marble working
By designing a mechanical clamp with a ratchet seat and an inclined ratchet plate, the problem of clamping failure during the hoisting of marble slabs in the prior art has been solved, and stable hoisting and safe placement have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG CHANGBO PRECISION INSTRUMENT CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-06-23
Smart Images
Figure CN224394430U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marble hoisting clamp technology, specifically a mechanical clamp for marble processing. Background Technology
[0002] Marble clamps refer to specialized tools used for the secure fixing, clamping, handling, or processing of marble. Among them, slab clamps / vertical slab clamps are specifically designed for vertically lifting marble slabs. They typically have two or more jaws with protective pads and clamp the top edge of the slab through mechanical linkage (lever or screw). These are mechanical clamps that need to be used in conjunction with cranes, forklifts, or gantry cranes.
[0003] Existing sheet metal clamps rely on the lever principle for self-locking, and their clamping force is highly dependent on the weight of the sheet metal itself. This presents the following problems during actual hoisting:
[0004] During the process of hoisting marble slabs to a designated location and lowering them, if the bottom of the marble slab is in contact with an object but has not yet been placed in the designated position or stabilized, the hoisting ropes of the hoisting device may become too loose, causing the slab clamps to loosen their grip on the marble. This can lead to the slab slipping out of the clamps, causing the marble to tip over and be damaged, and also posing a certain operational safety hazard. Based on this, a mechanical clamp for marble processing is provided. Utility Model Content
[0005] The purpose of this utility model is to provide a mechanical clamp for marble processing in order to solve the problems mentioned above.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A mechanical clamp for marble processing, comprising a lifting clamp assembly consisting of a lifting base, a fixed clamping plate, connecting columns, guide columns, a movable clamping plate, an anti-slip pad, an inclined guide groove, an extrusion seat, a first guide rod, a convex sliding groove, and a convex lifting rod. Two connecting columns and guide columns are provided and fixed to the top center of the lifting base and the fixed clamping plate. The guide columns are distributed below the connecting columns. The movable clamping plate is slidably connected to the outside of the two guide columns. The anti-slip pad is installed on the outside of the fixed clamping plate and on one end face of the movable clamping plate near the fixed clamping plate. The inclined guide grooves are symmetrically opened on both sides of the outer wall of the lifting base and communicate with the inner side of the lifting base. The extrusion seats are distributed inside the lifting seat and extend to the inside of the movable clamping plate, fitting against the inner end face of the movable clamping plate. The first guide rod is symmetrically fixed on both sides of the extrusion seat and slidably connected to the inclined guide groove. The convex groove is opened at the top of the extrusion seat. The bottom of the convex rod is slidably connected to the convex groove. The top of the convex rod passes through the area between the two guide columns and the two connecting columns and extends to the area above the lifting seat. The convex rod is used to pull the movable clamping plate closer to the fixed clamping plate, thereby clamping the edge of the marble slab. A locking component is provided on the outside of the lifting seat. The locking component is used to limit the clamping state of the movable clamping plate.
[0007] The locking assembly includes an inclined ratchet plate, a ratchet holder, an inclined guide rail, and an inclined guide plate;
[0008] The inclined ratchet plates are distributed on both sides of the outer wall of the hoisting seat and are fixedly connected to the two first guide rods respectively.
[0009] The inclined guide rail is fixed to the end of the lifting base away from the fixed clamp plate, the inclined guide plate is fixed to the inner side of the vertical slot of the ratchet holder, the ratchet holder is sleeved on the outer side of the lifting base and the inclined guide plate is slidably connected to the inclined guide rail;
[0010] The end faces of the ratchet holder and the inclined ratchet plate that come into contact with each other are formed with matching ratchet teeth. The ratchet teeth on the ratchet holder mesh with the ratchet teeth on the inclined ratchet plate to achieve one-way locking of the inclined ratchet plate.
[0011] As a further embodiment of this utility model: the inner end face of the hoisting seat is inclined, the extrusion seat is fitted with the inclined end face of the inner side of the hoisting seat and is formed with an inclined surface that matches the inclined end face of the inner side of the hoisting seat, and the inclination angle of the inclined guide groove matches the inclination angle of the inclined end face of the inner side of the hoisting seat.
[0012] The end face of the ratchet holder near the inclined ratchet plate is inclined and matches the inclination angle of the inclined guide groove.
[0013] As a further embodiment of this utility model: the inclined guide rail and the inclined guide groove are vertically distributed, the outer end of the hoisting seat is equipped with a guide wheel above the inclined guide rail, and a pull rope is tied to the top connecting ear of the ratchet seat. The pull rope extends upward, passes above the guide wheel, and then extends downward.
[0014] As a further embodiment of this utility model: vertical guide grooves communicating with the inner side of the movable clamping plate are provided on both sides of the movable clamping plate, and a second guide rod is fixed at a position on the side of the extrusion seat that is aligned with the vertical guide groove, and the second guide rod is slidably connected to the vertical guide groove.
[0015] As a further embodiment of this utility model: the vertical end face of the convex rod is fixed with an inclined hook, the inclined hook is distributed above the lifting base, and a Z-shaped lock is rotatably installed on the top of the lifting base. The Z-shaped lock is engaged with the inclined hook to achieve self-locking of the convex rod in the downward state.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] By incorporating a locking mechanism, the ratchet plate can achieve one-way locking of the inclined ratchet plate when the lifting clamp assembly clamps and lifts the marble slab. Thus, when the marble slab is transferred to the designated position and slowly lowered, the bottom of the marble slab contacts the object, and while the lifting rope of the lifting equipment is still slack, the clamping seat maintains a relatively constant height relative to the lifting seat under the mutual locking action of the inclined ratchet plate and the ratchet plate. That is, at this time, the moving clamp and the fixed clamp maintain a stable clamping state on the marble slab. To release the clamping of the marble slab by the lifting clamp assembly, simply pull the rope manually to tilt the inclined ratchet plate upward and release the lock on the ratchet plate. The cooperation of the above-mentioned components effectively improves the safety of marble slab lifting. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;
[0020] Figure 3 This is a schematic diagram showing the disassembled locking component of this utility model;
[0021] Figure 4 This is a structural cross-sectional view of the hoisting clamp assembly of this utility model;
[0022] Figure 5 This is a sectional view of the hoisting clamp assembly of this utility model.
[0023] In the diagram: 1. Lifting clamp assembly; 101. Lifting base; 102. Fixed clamping plate; 103. Connecting column; 104. Guide column; 105. Moving clamping plate; 106. Anti-slip pad; 107. Inclined guide groove; 108. Vertical guide groove; 109. Pressing seat; 110. First guide rod; 111. Second guide rod; 112. Convex sliding groove; 113. Convex lifting rod; 114. Inclined hook; 115. Z-shaped lock; 2. Locking assembly; 201. Inclined ratchet plate; 202. Racket seat; 203. Inclined guide rail; 204. Inclined guide plate; 205. Guide wheel; 206. Pull rope. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1-5 In this embodiment of the present invention, a mechanical clamp for marble processing includes a lifting clamp assembly 1 composed of a lifting base 101, a fixed clamping plate 102, a connecting column 103, a guide column 104, a movable clamping plate 105, an anti-slip pad 106, an inclined guide groove 107, an extrusion seat 109, a first guide rod 110, a convex sliding groove 112, and a convex lifting rod 113. Two connecting columns 103 and two guide columns 104 are provided and fixed to the top center of the lifting base 101 and the fixed clamping plate 102. The guide columns 104 are distributed below the connecting columns 103. The movable clamping plate 105 is slidably connected to the outside of the two guide columns 104. The anti-slip pad 106 is installed on the outside of the fixed clamping plate 102, and the movable clamping plate 105 is close to one end face of the fixed clamping plate 102. The inclined guide grooves 107 are symmetrical. The extrusion seats 109 are located on both sides of the outer wall of the lifting seat 101 and are connected to the inner side of the lifting seat 101. The extrusion seats 109 are distributed on the inner side of the lifting seat 101 and extend to the inner side of the movable clamping plate 105 and are in contact with the inner end face of the movable clamping plate 105. The first guide rod 110 is symmetrically fixed on both sides of the extrusion seat 109 and is slidably connected to the inclined guide groove 107. The convex groove 112 is opened on the top of the extrusion seat 109. The bottom of the convex rod 113 is slidably connected to the convex groove 112. The top of the convex rod 113 passes through the middle area of the two guide posts 104 and the two connecting posts 103 and extends to the area above the lifting seat 101. The convex rod 113 is pulled upward to move the movable clamping plate 105 closer to the fixed clamping plate 102, thereby achieving the clamping of the edge of the marble slab.
[0026] A locking component 2 is provided on the outside of the hoisting base 101. The locking component 2 is used to limit the clamping state of the movable clamping plate 105.
[0027] Locking assembly 2 includes an inclined ratchet plate 201, a ratchet holder 202, an inclined guide rail 203, and an inclined guide plate 204;
[0028] Inclined ratchet plates 201 are distributed on both sides of the outer wall of the lifting base 101 and are fixedly connected to the two first guide rods 110 respectively.
[0029] The inclined guide rail 203 is fixed to the end of the lifting base 101 away from the fixed clamp 102, the inclined guide plate 204 is fixed to the inner side of the vertical slot of the ratchet seat 202, the ratchet seat 202 is sleeved on the outer side of the lifting base 101 and the inclined guide plate 204 is slidably connected to the inclined guide rail 203.
[0030] The end faces of the ratchet holder 202 and the inclined ratchet plate 201 that are in contact with each other are formed with matching ratchet teeth. The ratchet teeth on the ratchet holder 202 engage with the ratchet teeth on the inclined ratchet plate 201 to achieve one-way locking of the inclined ratchet plate 201.
[0031] The inclined guide rail 203 and the inclined guide groove 107 are vertically distributed. The outer end of the hoisting seat 101 is equipped with a guide wheel 205 above the inclined guide rail 203. A pull rope 206 is tied to the top connecting ear of the ratchet seat 202. The pull rope 206 extends upward, passes above the guide wheel 205, and then extends downward.
[0032] An inclined hook 114 is fixed to the vertical end face of the convex rod 113. The inclined hook 114 is distributed above the lifting base 101. A Z-shaped lock 115 is rotatably installed on the top of the lifting base 101. The Z-shaped lock 115 is engaged with the inclined hook 114 to achieve self-locking of the convex rod 113 in the downward state.
[0033] In this embodiment, it should be noted that the top of the convex lifting rod 113 is formed with a lifting ring for connection with the lifting equipment. The working principle of this mechanical clamp is as follows:
[0034] In its normal state, the inclined hook 114 on the convex lifting rod 113 is engaged with the Z-shaped lock 115. At this time, the movable clamp 105 and the fixed clamp 102 are in a state of separation. The lifting clamp assembly 1 is transferred to the marble slab to be lifted by the lifting equipment and slowly lowered so that the movable clamp 105 and the fixed clamp 102 are fitted onto the front and rear end faces of the upper edge of the marble slab. Then, the Z-shaped lock 115 is manually turned to open and separate from the inclined hook 114. (It should be noted that the handle of the Z-shaped lock 115 has a hole for tying a rope. Pulling the Z-shaped lock 115 with a rope can also separate it from the inclined hook 114. In addition, a torsion spring is provided on the outside of the rotating shaft of the Z-shaped lock 115. The two ends of the torsion spring are engaged with the rotating shaft and the lifting seat 101 respectively to provide a reset spring force for the Z-shaped lock 115 to reset.) In this way, the locking of the convex lifting rod 113 is released.
[0035] Afterwards, the hoisting equipment is started to pull the convex lifting rod 113 upwards. At this time, the hoisting seat 101, the fixed clamping plate 102, and the moving clamping plate 105 as a whole do not move up under their own weight. The upward movement of the convex lifting rod 113 pulls the pressing seat 109 upwards. At this time, under the guidance of the first guide rod 110 and the tilting groove 107, the pressing seat 109 moves horizontally while moving upwards. The horizontally moving pressing seat 109 presses the moving clamping plate 105 towards the fixed clamping plate 102, thereby realizing the clamping operation of the marble slab. Afterwards, the hoisting equipment continues to operate. The self-weight of the marble slab causes friction self-locking with the anti-slip pads 106 on the surface of the moving clamping plate 105 and the fixed clamping plate 102, thereby realizing the lifting operation of the marble slab.
[0036] During the above process, as the first guide rod 110 tilts upward, it drives the tilted ratchet plate 201 to tilt upward synchronously. The ratchet on the tilted ratchet plate 201 and the ratchet on the ratchet holder 202 press against each other, causing the ratchet holder 202 and the tilted guide plate 204 to move away from the tilted ratchet plate 201 along the tilted guide rail 203. When the ratchet on the tilted ratchet plate 201 aligns with the tooth groove on the ratchet holder 202, the ratchet holder 202 slides down under its own weight, realizing the ratchet of the tilted ratchet plate 201 and the ratchet holder 202 engaging with each other. By repeating this process, the one-way locking of the tilted ratchet plate 201 can be achieved.
[0037] Thus, when the marble slab is transferred to the designated position and slowly lowered, the bottom of the marble slab contacts the object, and while the hoisting rope of the hoisting equipment is still loosening, the clamping seat 109 remains at a relatively constant height relative to the hoisting seat 101 under the mutual locking action of the inclined ratchet plate 201 and the ratchet clamp 202. That is, at this time, the moving clamping plate 105 and the fixed clamping plate 102 maintain a stable clamping state on the marble slab.
[0038] To release the clamping of the marble slab by the lifting clamp assembly 1, simply pull the pull rope 206 manually. The pull rope 206 pulls the ratchet seat 202 upward, thereby releasing the lock on the inclined ratchet plate 201. At this time, when the lifting rope of the lifting equipment is relaxed, the convex lifting rod 113 and the pressing seat 109 move downward under their own weight, and the moving clamp 105 resets to release the clamping of the marble slab.
[0039] Please refer to this carefully. Figures 1-5 The inner end face of the lifting seat 101 is inclined. The extrusion seat 109 fits against the inclined end face of the inner side of the lifting seat 101 and is formed with an inclined surface that matches the inclined end face of the inner side of the lifting seat 101. The inclination angle of the inclined guide groove 107 matches the inclination angle of the inclined end face of the inner side of the lifting seat 101.
[0040] The end face of the ratchet holder 202 near the inclined ratchet plate 201 is inclined and matches the inclination angle of the inclined guide groove 107.
[0041] In this embodiment: the structural arrangement of the inclined end face inside the hoisting seat 101 further improves the squeezing force of the extrusion seat 109 on the moving clamping plate 105, ensuring the stability of the moving clamping plate 105 in clamping the marble slab.
[0042] The ratchet holder 202 is inclined at the end face of the inclined ratchet plate 201 and the inclination angle matches that of the inclined guide groove 107. This structure ensures the self-locking stability of the ratchet holder 202 and the inclined ratchet plate 201.
[0043] Please refer to this carefully. Figures 1-5 The movable clamping plate 105 has vertical guide grooves 108 on both sides that communicate with the inner side of the movable clamping plate 105. A second guide rod 111 is fixed at a position on the side of the extrusion seat 109 that is aligned with the vertical guide groove 108. The second guide rod 111 is slidably connected to the vertical guide groove 108.
[0044] In this embodiment: through the structural arrangement of the second guide rod 111 and the vertical guide groove 108, when the pressing seat 109 moves down, it can drive the moving clamping plate 105 to reset, ensuring the stable reset of the moving clamping plate 105.
[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A mechanical clamp for marble processing, comprising a lifting clamp assembly (1) consisting of a lifting base (101), a fixed clamping plate (102), a connecting column (103), a guide column (104), a movable clamping plate (105), an anti-slip pad (106), an inclined guide groove (107), an extrusion seat (109), a first guide rod (110), a convex sliding groove (112), and a convex lifting rod (113). Two connecting columns (103) and two guide columns (104) are provided and fixed to the top center of the lifting base (101) and the fixed clamping plate (102). The guide columns (104) are distributed below the connecting columns (103). The movable clamping plate (105) is slidably connected to the outside of the two guide columns (104). The anti-slip pad (106) is installed on the outside of the fixed clamping plate (102), and the movable clamping plate (105) is close to one end face of the fixed clamping plate (102). The inclined guide groove (107) is symmetrically opened on... The outer walls of the lifting seat (101) are connected to the inner side of the lifting seat (101). The extrusion seats (109) are distributed on the inner side of the lifting seat (101) and extend to the inner side of the movable clamp (105) and are in contact with the inner end face of the movable clamp (105). The first guide rod (110) is symmetrically fixed on both sides of the extrusion seat (109) and is slidably connected to the inclined guide groove (107). The convex groove (112) is opened on the top of the extrusion seat (109). The bottom of the convex hanger (113) is slidably connected to the convex slide groove (112). The top of the convex hanger (113) passes through the middle area of the two guide posts (104) and the two connecting posts (103) and extends to the area above the lifting seat (101). The convex hanger (113) is pulled upward to move the movable clamping plate (105) closer to the fixed clamping plate (102), thereby achieving the clamping of the edge of the marble slab. A locking assembly (2) is provided on the outside of the hoisting base (101), and the locking assembly (2) is used to limit the clamping state of the movable clamping plate (105); The locking assembly (2) includes an inclined ratchet plate (201), a ratchet holder (202), an inclined guide rail (203), and an inclined guide plate (204). The inclined ratchet plates (201) are distributed on both sides of the outer wall of the lifting base (101) and are fixedly connected to the two first guide rods (110) respectively; The inclined guide rail (203) is fixed to one end of the lifting base (101) away from the fixed clamp (102), the inclined guide plate (204) is fixed to the inner side of the vertical slot of the ratchet seat (202), the ratchet seat (202) is sleeved on the outside of the lifting base (101) and the inclined guide plate (204) is slidably connected to the inclined guide rail (203); The end faces of the ratchet holder (202) and the inclined ratchet plate (201) that are in contact with each other are formed with matching ratchet teeth. The ratchet teeth on the ratchet holder (202) mesh with the ratchet teeth on the inclined ratchet plate (201) to achieve one-way locking of the inclined ratchet plate (201).
2. A mechanical clamp for marble working according to claim 1, characterized in that, The inner end face of the hoisting seat (101) is inclined. The extrusion seat (109) is in contact with the inclined end face of the inner side of the hoisting seat (101) and is formed with an inclined surface that matches the inclined end face of the inner side of the hoisting seat (101). The inclination angle of the inclined guide groove (107) matches the inclination angle of the inclined end face of the inner side of the hoisting seat (101). The end face of the ratchet holder (202) near the inclined ratchet plate (201) is inclined and matches the inclination angle of the inclined guide groove (107).
3. The mechanical clamp for marble working according to claim 1, characterized in that, The inclined guide rail (203) and the inclined guide groove (107) are vertically distributed. The outer end of the hoisting seat (101) is equipped with a guide wheel (205) above the inclined guide rail (203). A pull rope (206) is tied to the top connecting ear of the ratchet seat (202). The pull rope (206) extends upward through the guide wheel (205) and then extends downward.
4. The mechanical clamp for marble working according to claim 1, characterized in that, The movable clamp (105) has vertical guide grooves (108) on both sides that communicate with the inner side of the movable clamp (105). A second guide rod (111) is fixed at a position on the side of the extrusion seat (109) that is aligned with the vertical guide groove (108). The second guide rod (111) is slidably connected to the vertical guide groove (108).
5. The mechanical clamp for marble working according to claim 1, characterized in that, The vertical end face of the convex rod (113) is fixed with an inclined hook (114). The inclined hook (114) is distributed above the lifting seat (101). The top of the lifting seat (101) is rotatably installed with a Z-shaped lock (115). The Z-shaped lock (115) is hooked with the inclined hook (114) to achieve self-locking of the convex rod (113) in the downward state.