Stretching clamp for joint connection of conveying belt

Abstract

The utility model discloses a stretching clamp for joint connection of a conveying belt, belongs to the technical field of maintenance equipment of the conveying belt, and is used for stretching during joint connection of the conveying belt. According to the technical scheme, every two of four belt clamps are clamped at the two ends of an opposite connecting belt, upper pressing plates of the belt clamps are placed above a bottom plate, a stand column is vertically fixed to the middle of the rear end of the bottom plate, a chain block lug is fixed to the outer side of the lower portion of the stand column, and a horizontal gear fixing plate is fixed to the upper portion of the stand column; a gear shaft seat is arranged on the gear fixing plate, the gear shaft is rotatably mounted in the gear shaft seat, the transmission gear is sleeved at one end of the gear shaft, the lower surface of the gear fixing plate is connected with a pressing plate locking block, a rack is arranged on one side of the pressing plate locking block and meshed with the transmission gear, and the pressing plate locking block is pressed on a protruding locking slope on the upper surface of the upper pressing plate. The belt connecting and stretching device can be used for connecting and stretching a belt, the stretching process is quick and labor-saving, the labor intensity is reduced, and the maintenance work efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a clamp that stretches when connecting the joint of the annular conveying belt, and belongs to the technical field of conveying belt maintenance equipment. BACKGROUND

[0002] In cold rolling production, the annular conveying belt is widely used in strip steel production and waste transportation after cutting. When the annular conveying belt is used, the strip steel head is relatively sharp, which often leads to the annular conveying belt being cut. When the damaged annular conveying belt is running, the steel wire at the joint of the belt often breaks or is missing. In order to ensure the stable operation of the annular belt and reduce the consumption of the spare parts of the conveying belt, it is urgent to restore and connect the damaged annular conveying belt in time. Since the annular conveying belt is relatively long and wide, the steel wire at the joint of the belt needs to be connected after the belt tensioning roller is loosened and the belt is stretched to make the two ends of the belt head as close as possible. At present, the belt is stretched by manpower. Since the annular belt is very long and heavy, it is very laborious to stretch the belt by manpower. It takes more than 6 man-hours to connect the belt head to the connecting position each time. If the belt tension is large, it will be more laborious to connect the annular belt. Therefore, it is urgent to design an auxiliary clamp for connecting the belt to save the time consumed in connecting the belt. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a stretching clamp for connecting the joint of the conveying belt. The clamp can clamp the two ends of the belt to be connected respectively, then stretch and connect the belt, and can be adjusted according to the different widths of the conveying belt, so as to quickly connect the conveying belt, save the repair time, and ensure the stable operation of the production.

[0004] The technical scheme for solving the above technical problem is as follows:

[0005] The utility model provides a kind of stretching clamp for transport belt joint connection, it includes belt clamp, connecting rod, four belt clamps are respectively two two clamped in opposite connecting belt two ends, two belt clamps between each end are connected by connecting rod, belt clamp includes bottom plate, upper pressing plate, stand, chain block ear seat, gear fixing plate, gear shaft seat, gear shaft, transmission gear, pressing plate locking block, bottom plate and upper pressing plate are rectangle respectively, upper pressing plate is placed above bottom plate, the bottom surface of upper pressing plate and the upper surface of bottom plate are respectively opposite flat, belt is placed between the bottom surface of upper pressing plate and the upper surface of bottom plate, the rear end of bottom plate is vertically fixed with stand in middle position, the outside of lower part of stand is fixed with chain block ear seat, the upper part of stand is fixed with horizontal gear fixing plate, gear fixing plate is located above upper pressing plate, gear fixing plate has gear shaft seat, gear shaft is rotatably installed in gear shaft seat, transmission gear is sleeved on one end of gear shaft, the other end of gear shaft has six square head of rotating gear shaft, there is pressing plate locking block between the lower surface of gear fixing plate and the upper surface of upper pressing plate, pressing plate locking block is slidably connected with the lower surface of gear fixing plate, one side of pressing plate locking block has rack, rack is located below transmission gear, rack is engaged with transmission gear, the rear portion of pressing plate locking block has pressing block, the upper surface of upper pressing plate has protruding locking inclined surface, the lower surface of pressing block of pressing plate locking block is pressed on the protruding locking inclined surface of the upper surface of upper pressing plate.

[0006] The stretching clamp for transport belt joint connection, the upper end of the stand has a connecting rod hole for fixing the connecting rod, the connecting rod is composed of a sleeve and a sliding rod, one end of the sleeve and the sliding rod is fixed in the connecting rod hole of the upper end of the stand of the two belt clamps respectively, the other end of the sleeve and the sliding rod is opposite, the inner diameter of the sleeve matches the outer diameter of the sliding rod, the sliding rod is inserted into the inner hole of the opposite sleeve, and the sliding rod and the sleeve are in sliding fit.

[0007] The stretching clamp for transport belt joint connection, the gear fixing plate connected with the stand of the bottom plate is a rectangular plate, the length direction of the gear fixing plate is parallel to the length direction of the bottom plate, the lower part of the gear shaft seat on the gear fixing plate has a gear shaft hole, the diameter of the gear shaft hole matches the gear shaft, the gear shaft and the gear shaft hole are in rotating fit, the upper part of the gear shaft seat has a locking pin hole, the locking pin hole is parallel to the gear shaft hole, a stop gear is sleeved on the gear shaft, the stop gear is located between the transmission gear and the gear shaft seat, the diameter of the stop gear is smaller than the transmission gear, the gap between the adjacent gear teeth of the stop gear is opposite to the locking pin hole of the gear shaft seat, a locking pin is inserted into the locking pin hole, and the front end of the locking pin is opposite to the gear teeth gap of the stop gear.

[0008] The stretching clamp for the joint connection of the conveying belt joint has a rectangular column opening in the middle of the rear end of the upper surface of the upper pressing plate, the column opening is matched with the column section of the rear end of the bottom plate, the column of the rear end of the bottom plate is embedded in the column opening of the rear end of the upper pressing plate, the column and the column opening are in sliding fit, guide rod holes are respectively arranged on the two sides of the column opening, vertical guide rods are respectively arranged on the two sides of the column of the bottom plate, the outer diameter of the guide rod is matched with the inner diameter of the guide rod hole, the guide rod is inserted in the guide rod hole, the guide rod and the guide rod hole are in sliding fit, a reset spring is sleeved on the lower part of the guide rod, the reset spring is located between the upper surface of the bottom plate and the lower surface of the upper pressing plate, a long groove is connected in front of the column opening of the upper pressing plate, and protruding locking inclined surfaces are respectively fixed on the two sides of the long groove, the protruding locking inclined surfaces are respectively opposite to the lower surfaces of the pressing blocks of the pressing plate locking blocks.

[0009] The stretching clamp for the joint connection of the conveying belt joint has vertical baffle plates respectively arranged on the upper edges of the two sides of the plate surface of the upper pressing plate, the two baffle plates are respectively clamped on the two sides of the pressing blocks of the pressing plate locking blocks connected to the lower surface of the gear fixing plate, and the inner sides of the baffle plates are in sliding fit with the outer sides of the pressing blocks of the pressing plate locking blocks.

[0010] The stretching clamp for the joint connection of the conveying belt joint has vertical baffle plates respectively arranged on the upper edges of the two sides of the plate surface of the upper pressing plate, the two baffle plates are respectively clamped on the two sides of the pressing blocks of the pressing plate locking blocks connected to the lower surface of the gear fixing plate, and the inner sides of the baffle plates are in sliding fit with the outer sides of the pressing blocks of the pressing plate locking blocks.

[0011] The stretching clamp for the joint connection of the conveying belt joint has vertical baffle plates respectively arranged on the upper edges of the two sides of the plate surface of the upper pressing plate, the two baffle plates are respectively clamped on the two sides of the pressing blocks of the pressing plate locking blocks connected to the lower surface of the gear fixing plate, and the inner sides of the baffle plates are in sliding fit with the outer sides of the pressing blocks of the pressing plate locking blocks.

[0012] The stretching clamp for the joint connection of the conveying belt joint has vertical baffle plates respectively arranged on the upper edges of the two sides of the plate surface of the upper pressing plate, the two baffle plates are respectively clamped on the two sides of the pressing blocks of the pressing plate locking blocks connected to the lower surface of the gear fixing plate, and the inner sides of the baffle plates are in sliding fit with the outer sides of the pressing blocks of the pressing plate locking blocks.The four belt clamps are clamped in pairs at the two ends of the connecting belt respectively, the bottom plate stand outside of the belt clamp is fixed with an inverted chain ear seat, two groups of inverted chains are connected by the inverted chain ear seat to stretch the two ends of the connecting belt close to each other for connection operation; the sleeve and the sliding rod of the connecting rod between the two belt clamps can be adjusted in length to adapt to belts of different widths; the upper pressing plate and the bottom plate of the belt clamp are clamped on the two sides of the belt surface, the transmission gear installed on the gear fixing plate of the bottom plate is engaged with the rack of the pressing and locking block of the upper pressing plate, the transmission gear drives the pressing and locking block to move backward through the rack, the pressing block of the pressing and locking block pushes the upper pressing plate downward through the locking inclined surface of the upper pressing plate, so that the upper pressing plate and the bottom plate clamp the belt; one end of the gear shaft is provided with a hexagonal head, the gear shaft and the transmission gear can be rotated by using a hexagonal wrench; after the belt is clamped, the front end of the locking pin is inserted into the tooth gap of the stop gear to lock the gear shaft and the transmission gear.

[0013] The utility model discloses simple structure, convenient to use can adapt to the connection of the belt of different width and stretch, two groups of belt clamps can use inverted chain to stretch the two ends of the joint head to the connecting position after clamping the belt, and the stretching process is quick and labor-saving, reduces the labor intensity of the worker, saves the maintenance time, greatly improves the maintenance work efficiency, guarantees the stable operation of production. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic diagram of the utility model;

[0015] Figure 2 It is the structure schematic diagram of the belt clamp;

[0016] Figure 3 、 4 It is Figure 2 the side view and the top view of;

[0017] Figure 5 It is the structure schematic diagram of the bottom plate;

[0018] Figure 6 、 7 It is Figure 5 the side view and the top view of;

[0019] Figure 8 It is the structure schematic diagram of the upper pressing plate;

[0020] Figure 9 、 10 It is Figure 8 the side view and the top view of;

[0021] Figure 11 It is the structure schematic diagram of the pressing plate locking block;

[0022] Figure 12 The structure schematic diagram of gear shaft and stop gear.

[0023] The figure is marked as follows: belt clamp 1, connecting rod 2, bottom plate 3, upper pressing plate 4, upright column 5, chain ear seat 6, gear fixing plate 7, gear shaft seat 8, gear shaft 9, transmission gear 10, pressing plate locking block 11, pressing block 12, rack 13, sliding guide rail 14, sleeve 15, sliding rod 16, connecting rod hole 17, gear shaft hole 18, locking pin hole 19, locking pin 20, stop gear 21, hexagonal head 22, gear key groove 23, upright column opening 24, long groove 25, guide rod hole 26, guide rod 27, return spring 28, locking inclined surface 29, baffle 30, sliding groove 31, belt 32. DETAILED DESCRIPTION

[0024] The utility model discloses a belt clamp 1 and connecting rod 2 constitute.

[0025] Figure 1 It shows that four belt clamps 1 are clamped in two pairs respectively at the two ends of the opposite connecting belts 32, and the two belt clamps 1 at each end are connected by the connecting rod 2. The outer side of the belt clamp 1 is fixed with the chain ear seat 6, and the two groups of chains are connected by the chain ear seat 6 to stretch the two ends of the connecting belt 32 close to each other for connection operation.

[0026] Figure 1 It shows that the connecting rod 2 is composed of the sleeve 15 and the sliding rod 16, one end of the sleeve 15 and the sliding rod 16 is fixed on the upper end of the upright column 5 of the two belt clamps 1 respectively, the other end of the sleeve 15 and the sliding rod 16 is opposite, the inner diameter of the sleeve 15 matches the outer diameter of the sliding rod 16, the sliding rod 16 is inserted in the opposite sleeve 15 inner hole, and the sliding rod 16 and the sleeve 15 are in sliding fit.

[0027] Figure 2 、 3 It shows that the belt clamp 1 includes the bottom plate 3, the upper pressing plate 4, the upright column 5, the chain ear seat 6, the gear fixing plate 7, the gear shaft seat 8, the gear shaft 9, the transmission gear 10 and the pressing plate locking block 11.

[0028] The overall structure is that the upper pressing plate 4 is placed above the bottom plate 3, the bottom surface of the upper pressing plate 4 and the upper surface of the bottom plate 3 are opposite flat plates respectively, and the belt 32 is placed between the bottom surface of the upper pressing plate 4 and the upper surface of the bottom plate 3. The middle position of the rear end of the bottom plate 3 is vertically fixed with the upright column 5, the outer side of the lower part of the upright column 5 is fixed with the chain ear seat 6, the upper part of the upright column 5 is fixed with the horizontal gear fixing plate 7, the gear fixing plate 7 is located above the upper pressing plate 4, the gear fixing plate 7 is provided with the gear shaft seat 8, the gear shaft 9 is rotatably installed in the gear shaft seat 8, and the transmission gear 10 is sleeved on the gear shaft 9. There is the pressing plate locking block 11 between the lower surface of the gear fixing plate 7 and the upper surface of the upper pressing plate 4, the upper end of the pressing plate locking block 11 is slidably connected with the lower surface of the gear fixing plate 7, and the lower surface of the pressing plate locking block 11 presses the upper pressing plate 4.

[0029] Figure 5 、 6 , 7 shows that the bottom plate 3 is a rectangular plate, the upper end of the column 5 at the back end of the bottom plate 3 has a connecting rod hole 17 for fixing the connecting rod 2, and the upper end of the column 5 below the connecting rod hole 17 is fixed with a gear fixing plate 7. The gear fixing plate 7 is a rectangular plate, and the length direction of the gear fixing plate 7 is parallel to the length direction of the bottom plate 3. The lower part of the gear shaft seat 8 on the gear fixing plate 7 has a gear shaft hole 18, and the upper part has a locking pin hole 19, and the gear shaft hole 18 and the locking pin hole 19 are parallel. The diameter of the gear shaft hole 18 matches the gear shaft 9, and the gear shaft 9 is in rotating fit with the gear shaft hole 18.

[0030] Figure 4 、 6 , 12 shows that the gear shaft 9 has a gear key groove 23, the gear shaft 9 is connected with the transmission gear 10 through a flat key, the rear end of the gear shaft 9 is a hexagonal head 22, and a hexagonal wrench can be used to rotate the gear shaft 9 and the transmission gear 10. The gear shaft 9 is sleeved with a stop gear 21, the stop gear is located between the transmission gear and the gear shaft seat, the diameter of the stop gear is smaller than that of the transmission gear, the gap between the adjacent gear teeth of the stop gear 21 is opposite to the locking pin hole 19 of the gear shaft seat 8, the locking pin 20 is inserted into the locking pin hole 19, and the front end of the locking pin 20 is opposite to the gear tooth gap of the stop gear 21. After the belt 32 is clamped, the front end of the locking pin 20 is inserted into the gear tooth gap of the stop gear 21 to lock the gear shaft 9 and the transmission gear 10.

[0031] Figure 2 、 3, 8, 9, 10 shows that the upper pressing plate 4 is a rectangular plate, and the upper surface of the upper pressing plate 4 has a rectangular column opening 24 in the middle of the rear end, which is matched with the section of the column 5 at the rear end of the bottom plate 3, and the column 5 at the rear end of the bottom plate 3 is embedded in the column opening 24 at the rear end of the upper pressing plate 4, and the column 5 and the column opening 24 are in sliding fit. The column opening 24 has guide rod holes 26 on both sides, and the column 5 of the bottom plate 3 has vertical guide rods 27 on both sides, and the outer diameter of the guide rod 27 is matched with the inner diameter of the guide rod hole 26, and the guide rod 27 is inserted into the guide rod hole 26, and the guide rod 27 and the guide rod hole 26 are in sliding fit. The lower part of the guide rod 27 is sleeved with a return spring 28, and the return spring 28 is located between the upper surface of the bottom plate 3 and the lower surface of the upper pressing plate 4. The column opening 24 of the upper pressing plate 4 is connected with a long slot 25 in front, and the long slot 25 is used for facilitating the installation of the upper pressing plate 4 and the bottom plate 3. The long slot 25 has protruding locking inclined surfaces 29 on both sides, and the protruding locking inclined surfaces 29 are respectively opposite to the lower surfaces of the pressing blocks 12 of the pressing plate locking blocks 11. The upper edges of the plate surfaces of the upper pressing plate 4 have vertical baffle plates 30 on both sides, and the two baffle plates 30 are respectively clamped on both sides of the pressing blocks 12 of the pressing plate locking blocks 11 connected to the lower surface of the gear fixed plate 7, and the inner side of the baffle plate 30 is in sliding fit with the outer side of the pressing block 12 of the pressing plate locking block 11, and the baffle plate 30 can constrain the sliding of the pressing block 12.

[0032] Figure 2 、 11 It is shown that the pressing plate locking block 11 is composed of three parts of the pressing block 12, the sliding guide rail 13 and the rack 14.

[0033] The pressing block 12 is a rectangular solid, the length direction of the pressing block 12 is perpendicular to the length direction of the gear fixed plate 7, the upper surface of the pressing block 12 is a plane, the lower surface of the pressing block 12 is an inclined surface, the thickness of the side of the pressing block 12 opposite to the column 5 is less than the side of the pressing block 12 away from the column 5, and the pressing block 12 is used for pressing the protruding locking inclined surface 29 on the plate surface of the upper pressing plate 4 downward, so that the upper pressing plate 4 is pressed downward to the belt 32.

[0034] The sliding guide rail 13 is connected to the side of the pressing block 12 away from the column 5, the length direction of the sliding guide rail 13 is parallel to the length direction of the gear fixed plate 7, the section of the sliding guide rail 13 is trapezoidal, the length of the upper base of the trapezoid is greater than the length of the lower base of the trapezoid, the lower surface of the gear fixed plate 7 has a sliding groove 31 along the length direction of the gear fixed plate 7, the section of the sliding groove 31 is matched with the section of the sliding guide rail 13, the sliding guide rail 13 is embedded in the sliding groove 31, and the sliding guide rail 13 and the sliding groove 31 are in sliding fit, and the sliding guide rail 13 can drive the pressing plate locking block 11 to move, so that the pressing block 12 can move to press the upper pressing plate 4 downward.

[0035] The rack 14 is located outside the sliding guide rail 13, the rack 14 is parallel to the sliding guide rail 13, one end of the rack 14 is fixedly connected with the pressing block 12, and the rack 14 is meshed with the transmission gear 10 below the transmission gear 10. The transmission gear 10 can drive the rack 14 to move when rotating, the rack 14 can drive the pressing block 12 to move, and the inclined surface of the pressing block 12 is pressed downward to the locking inclined surface 29 of the upper pressing plate 4.

[0036] The use process of the utility model is as follows:

[0037] First, connect the two belt clamps 1 with a connecting rod 2 at two connecting ends of the connecting belt 32 respectively, stretch the sleeve 15 and the sliding rod 16 of the connecting rod 2 according to the width of the belt 32, and adjust the distance between the two belt clamps 1; the upper surface of the upper pressing plate 4 of the two belt clamps 1 and the upper surface of the bottom plate 3 are placed between the belt heads, a hexagonal wrench is used to rotate the gear shaft 9, the gear shaft 9 drives the transmission gear 10 to rotate, and the transmission gear 10 drives the rack 14 to move; when the rack 14 moves, the pressing block 12 connected with the rack 14 as a whole moves along the sliding groove 31 of the lower surface of the gear fixing plate 7 through the sliding guide rail 13, the inclined surface of the lower surface of the pressing block 12 moves along the locking inclined surface 29 of the upper pressing plate 4, the upper pressing plate 4 is pressed downward, and the upper pressing plate 4 can be pressed on the surface of the belt 32; after the upper pressing plate 4 and the bottom plate 3 clamp the belt 32, the operator inserts the locking pin 20 into the locking pin hole 19 of the gear shaft seat 8, the front end of the locking pin 20 is inserted into the tooth gap of the stop gear 21, the locking pin 20 locks the stop gear 21, the gear shaft 8 and the transmission gear 10, and the upper pressing plate 4 and the bottom plate 3 maintain the clamping state of the belt 32; after the two butt-jointed belt heads are clamped, the two inverted chains are hung on the inverted chain ear seats 6 on the two sides of the two butt-jointed belt heads respectively, the two belt heads are pulled close to each other by using the two inverted chains, and then connection is carried out; after connection, the inverted chains are removed, and the belt clamp is removed.

[0038] An embodiment of the utility model is as follows:

[0039] The sleeve 15 of the connecting rod 2 has an outer diameter of 30mm, an inner hole diameter of 22mm and a length of 1500mm, and the sliding rod 16 has a diameter of 20mm and a length of 1000mm;

[0040] The bottom plate 3 has a length of 200mm, a width of 100mm and a thickness of 10mm;

[0041] The upper pressing plate 4 has a length of 200mm, a width of 100mm and a thickness of 10mm;

[0042] The stand column 5 has a length of 40mm, a width of 20mm and a height of 100mm;

[0043] The gear fixing plate 7 has a length of 110mm, a width of 20mm and a thickness of 10mm;

[0044] The length of the gear shaft seat 8 is 20 mm, the width is 10 mm, and the height is 20 mm;

[0045] The diameter of the gear shaft 9 is 6 mm, and the length is 40 mm;

[0046] The diameter of the transmission gear 10 is 16 mm, and the thickness is 6 mm

[0047] The length of the pressing block 12 of the pressing plate locking block 11 is 80 mm, the width is 30 mm, the front end thickness is 16 mm, the rear end thickness is 8 mm, the length of the rack 13 is 50 mm, the width is 8 mm, and the thickness is 8 mm, the length of the sliding guide rail 14 is 30 mm, the width is 14 mm, and the thickness is 14 mm;

[0048] The diameter of the locking pin 20 is 8 mm, and the length is 25 mm;

[0049] The diameter of the stop gear 21 is 16 mm, and the thickness is 8 mm;

[0050] The length of the column opening 24 is 41 mm, and the width is 21 mm;

[0051] The length of the long slot 25 is 110 mm, and the width is 26 mm;

[0052] The diameter of the guide rod hole 26 is 13 mm;

[0053] The diameter of the guide rod 27 is 26 mm, and the length is 200 mm;

[0054] The diameter of the reset spring 28 is 30 mm, and the length is 40 mm.

Claims

1. A stretch clamp for a conveyor belt splice joint, characterized by: It includes belt clamp (1), connecting rod (2), four belt clamps (1) are respectively two two clamping in opposite connecting belt (32) two ends, two belt clamps (1) between each end are connected by connecting rod (2), belt clamp (1) includes bottom plate (3), upper pressing plate (4), stand (5), chain ear seat (6), gear fixing plate (7), gear shaft seat (8), gear shaft (9), transmission gear (10), pressing plate locking block (11), bottom plate (3) and upper pressing plate (4) are rectangular, upper pressing plate (4) is placed on the top of bottom plate (3), the bottom surface of upper pressing plate (4) and the upper surface of bottom plate (3) are opposite plates respectively, belt (32) is placed between the bottom surface of upper pressing plate (4) and the upper surface of bottom plate (3), the rear end of bottom plate (3) is vertically fixed with stand (5) in the middle position, the lower part of outer side of stand (5) is fixed with chain ear seat (6), the upper part of stand (5) is fixed with horizontal gear fixing plate (7), gear fixing plate (7) is located above upper pressing plate (4), gear fixing plate (7) has gear shaft seat (8) on it, gear shaft (9) is rotatably installed in gear shaft seat (8), transmission gear (10) is sleeved on one end of gear shaft (9), the other end of gear shaft (9) has hexagonal head (22) of rotating gear shaft (9), there is pressing plate locking block (11) between the lower surface of gear fixing plate (7) and the upper surface of upper pressing plate (4), pressing plate locking block (11) is slidably connected with the lower surface of gear fixing plate (7), one side of pressing plate locking block (11) has rack (13), rack (13) is located below transmission gear (10), rack (13) is engaged with transmission gear (10), the rear part of pressing plate locking block (11) has pressing block (12), the upper surface of upper pressing plate (4) has protruding locking inclined surface (29), the lower surface of pressing block (12) of pressing plate locking block (11) is pressed on the protruding locking inclined surface (29) of the upper surface of upper pressing plate (4).

2. The stretch clamp for a conveyor belt splice joint according to claim 1, characterized in that: The upper end of stand (5) has connecting rod hole (17) for fixedly connecting connecting rod (2), connecting rod (2) is composed of sleeve (15) and sliding rod (16), one end of sleeve (15) and sliding rod (16) is fixed in connecting rod hole (17) of the upper end of stand (5) of two belt clamps (1) respectively, the other end of sleeve (15) and sliding rod (16) is opposite, the inner diameter of sleeve (15) matches the outer diameter of sliding rod (16), sliding rod (16) is inserted into the inner hole of opposite sleeve (15), sliding rod (16) and sleeve (15) are in sliding fit.

3. The stretch gripper for a conveyor belt splice joint according to claim 1, wherein: The gear fixing plate (7) connected with the column (5) of the bottom plate (3) is a rectangular plate, the length direction of the gear fixing plate (7) is parallel to the length direction of the bottom plate (3), the lower part of the gear shaft seat (8) on the gear fixing plate (7) has a gear shaft hole (18), the diameter of the gear shaft hole (18) matches the gear shaft (9), the gear shaft (9) is rotationally matched with the gear shaft hole (18), the upper part of the gear shaft seat (8) has a locking pin hole (19), the locking pin hole (19) is parallel to the gear shaft hole (18), the gear shaft (9) is sleeved with a stop gear (21), the stop gear (21) is located between the transmission gear (10) and the gear shaft seat (8), the diameter of the stop gear (21) is smaller than that of the transmission gear (10), the gap between the adjacent gear teeth of the stop gear (21) is opposite to the locking pin hole (19) of the gear shaft seat (8), a locking pin (20) is inserted into the locking pin hole (19), and the front end of the locking pin (20) is opposite to the gear tooth gap of the stop gear (21).

4. The stretch gripper for a conveyor belt splice joint according to claim 1, wherein: The upper surface of the upper pressing plate (4) has a rectangular column opening (24) at the middle position of the rear end, the column opening (24) matches the section of the column (5) at the rear end of the bottom plate (3), the column (5) at the rear end of the bottom plate (3) is embedded in the column opening (24) at the rear end of the upper pressing plate (4), the column (5) and the column opening (24) are slidingly matched, the column opening (24) has guide rod holes (26) on both sides, the bottom plate (3) has vertical guide rods (27) on both sides of the column (5), the outer diameter of the guide rod (27) matches the inner diameter of the guide rod hole (26), the guide rod (27) is inserted into the guide rod hole (26), and the guide rod (27) and the guide rod hole (26) are slidingly matched, the lower part of the guide rod (27) is sleeved with a return spring (28), the return spring (28) is located between the upper surface of the bottom plate (3) and the lower surface of the upper pressing plate (4), the column opening (24) of the upper pressing plate (4) is connected with a long slot (25) in front, the long slot (25) has protruding locking inclined surfaces (29) fixed on both sides, and the protruding locking inclined surfaces (29) are opposite to the lower surfaces of the pressing blocks (12) of the pressing plate locking blocks (11) respectively.

5. The stretch gripper for a conveyor belt splice joint according to claim 1, wherein: The upper pressing plate (4) has vertical baffle plates (30) on both sides of the upper edges of the plate surfaces, the two baffle plates (30) are clamped on both sides of the pressing blocks (12) of the pressing plate locking blocks (11) connected with the lower surfaces of the gear fixing plate (7), and the inner sides of the baffle plates (30) and the outer sides of the pressing blocks (12) of the pressing plate locking blocks (11) are slidingly matched.

6. The stretch gripper for a conveyor belt splice joint according to claim 1, wherein: The pressing block (12) of the pressing plate locking block (11) is a cuboid, the length direction of the pressing block (12) is perpendicular to the length direction of the gear fixing plate (7), the upper surface of the pressing block (12) is a plane, the lower surface of the pressing block (12) is an inclined surface, the thickness of the side of the pressing block (12) opposite to the stand column (5) is less than the thickness of the side of the pressing block (12) away from the stand column (5), the side of the pressing block (12) away from the stand column (5) is connected with a sliding guide rail (14), the length direction of the sliding guide rail (14) is parallel to the length direction of the gear fixing plate (7), the cross section of the sliding guide rail (14) is a trapezoid, the length of the upper base of the trapezoid is greater than the length of the lower base of the trapezoid, the lower surface of the gear fixing plate (7) is provided with a sliding groove (31) along the length direction of the gear fixing plate (7), the cross section of the sliding groove (31) matches the cross section of the sliding guide rail (14), the sliding guide rail (14) is embedded in the sliding groove (31), the sliding guide rail (14) and the sliding groove (31) are in sliding fit, the rack (13) is located outside the sliding guide rail (14), the rack (13) is parallel to the sliding guide rail (14), one end of the rack (13) is fixedly connected with the pressing block (12), and the rack (13) is engaged with the transmission gear (10) below the transmission gear (10).

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