Box type chain wheel groove frame lifting mechanism

Abstract

The utility model discloses a box type chain wheel groove frame lifting mechanism, and particularly relates to the field of lifting devices. One side of a lifting groove frame is fixedly connected with a supporting arm; and clamping plates capable of moving towards each other or away from each other are mounted on the supporting arms. The output end of the gear motor drives the driving bevel gear to rotate and drives the driving rod to rotate through transmission of the driving bevel gear and the driven bevel gear, when the driving rod rotates, the chain wheel rotates along the surface of the chain so as to drive the lifting groove frames to move up and down, and the transmission shaft drives the other driving rod to rotate, so that the two lifting groove frames and the two supporting arms move synchronously. The object is driven to lift. In addition, according to the mechanism, the lifting groove frames, the supporting arms and the like are of a groove frame semi-box type integrated structure, the problems of low structural strength and low positioning precision are greatly solved, and the structures such as the positioning wheels and the transmission shafts are reasonably combined and optimized; the mechanism has the advantages of being good in structural strength, high in transmission efficiency, high in positioning precision, good in durability, compact in structure, low in later maintenance cost and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a box-type sprocket groove frame lifting mechanism. Background Art

[0002] Lifting mechanism is a commonly used device in mechanical equipment. In the existing scheme of using motor to realize lifting, the motor drives the lead screw in the transmission device to rotate after the reduction ratio is increased by the reducer, and the lead screw rotation drives the nut to realize linear motion, thereby driving the follower connecting rod to realize the forward push action, and drives the entire connecting rod group through other connecting rod mechanisms to realize the lifting function.

[0003] The general sprocket lifting mechanism is usually composed of a sprocket, a chain, a wheel, a shaft, a support rod and its mounting plate group, a column, a connecting bracket, a drive, etc. Among them, the mounting plate group is mostly assembled from scattered parts and fixed by bolts, etc. This kind of structure is convenient for processing and assembly, but the structural strength and positioning accuracy are low, which affects the transmission efficiency and reduces the service life. Therefore, the inventor provides a box-type sprocket groove frame lifting mechanism to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a box-type sprocket groove frame lifting mechanism with a strong structure and high positioning accuracy.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The box-type sprocket slot frame lifting mechanism comprises an active lifting mechanism and a driven lifting mechanism, wherein the active lifting mechanism comprises a base, a column is fixedly connected to the top of the base, a top plate is fixedly connected to the top of the column, fixed frames are fixedly connected to the front sides of the column, and chains are fixedly connected to the opposite sides of the two fixed frames; a lifting slot frame that can move up and down is slidably connected to the outer side of the column, and a support arm is fixedly connected to one side of the lifting slot frame; a clamping plate that can move toward or away from each other is installed on the support arm.

[0007] As a further solution of the utility model: a connecting block is fixedly connected to the opposite side of the front side of the lifting trough frame by bolts, a mounting seat is fixedly connected to one side of the lifting trough frame, and rotatable active rods are rotatably connected to the inner sides of the mounting seat, and the active rod extends to the right and penetrates the surface of the mounting seat and the lifting trough frame, and is rotatably connected to the surface of the lifting trough frame; a sprocket is fixedly connected to the active rod, the sprocket is located inside the lifting trough frame, and the sprocket is meshed with the chain; one side of the active rod is fixedly connected to a transmission shaft through a coupling.

[0008] As a further solution of the utility model: a reduction motor is embedded and fixed on the front side of the mounting seat, an output end of the reduction motor is fixedly connected with a driving bevel gear, a driven bevel gear is fixedly connected to the active rod, the driven bevel gear is located inside the mounting seat, and the driving bevel gear is vertically meshed with the driven bevel gear.

[0009] As a further solution of the utility model: a pair of first positioning wheels are fixedly connected to the upper part of the active rod, a flip rod is rotatably connected to the opposite side of the front face of the lifting trough frame, the flip rod is fixedly connected to the same first positioning wheel, the first positioning wheel is in contact with the surface of the column, the inner sides of the lifting trough frame are respectively rotatably connected to a pair of rotating rods, a pair of third positioning wheels are fixedly connected to the surface of the rotating rods, and the third positioning wheels are in contact with the surface of the column.

[0010] As a further solution of the utility model: a pair of slot bodies are respectively opened on both sides of the lifting slot frame, and a second positioning wheel is rotatably connected to the inside of the slot body through a movable shaft, and the inner side of the second positioning wheel is in contact with the surface of the column.

[0011] As a further solution of the utility model: a pressing bolt is threadedly connected to one side of the connecting block, a bearing is arranged on one side of the pressing bolt, the inner ring of the bearing is fixedly connected to the pressing bolt, and a pressure plate is fixedly connected to the outer end of the bearing.

[0012] As a further solution of the utility model: a two-way cylinder is fixedly connected inside the support arm, and clamps are fixedly connected to the output ends on both sides of the two-way cylinder; sliding grooves are opened on both sides of the surface of the support arm, and the clamps pass through the sliding grooves and are slidably connected to the sliding grooves.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The box-type sprocket slot frame lifting mechanism starts the reduction motor through an external power supply. The output end of the reduction motor drives the active bevel gear to rotate and drives the active rod to rotate through the transmission of the active bevel gear and the driven bevel gear. When the active rod rotates, the sprocket rotates along the chain surface, thereby driving the lifting slot frame to move up and down, and driving the other active rod to rotate through the transmission shaft, so that the two lifting slot frames and two supporting arms move synchronously, driving the object to be lifted. In addition, this mechanism not only adopts a semi-box-type integrated structure of the slot frame, which greatly improves the structural strength and low positioning accuracy, but also the positioning wheel, transmission shaft and other structures are reasonably combined and optimized, so that this set of mechanisms has the advantages of good structural strength, high transmission efficiency, high positioning accuracy, good durability, compact structure, and low later maintenance costs.

[0015] In addition, the box-type sprocket groove frame lifting mechanism rotates the bolt, and the bolt rotates and drives the pressure plate to move to the right through the bearing, so that the pressure plate is pressed on the surface of the chain, so that the chain is in a tight state, so that the sprocket is not easy to be disconnected from the chain surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the box-type sprocket groove frame lifting mechanism;

[0017] Figure 2 It is a schematic diagram of the structure of the active lifting mechanism in the box-type sprocket slot frame lifting mechanism;

[0018] Figure 3 It is a right-side stereoscopic schematic diagram of the overall structure of the box-type sprocket slot frame lifting mechanism;

[0019] Figure 4 It is a left view schematic diagram of the local structure in the box-type sprocket slot frame lifting mechanism.

[0020] In the figure: 10, active lifting mechanism; 11, driven lifting mechanism; 20, base; 21, column; 22, top plate; 23, fixed frame; 24, chain; 25, lifting slot frame; 30, connecting block; 31, mounting seat; 32, reduction motor; 33, active rod; 34, transmission shaft; 35, active bevel gear; 36, driven bevel gear; 37, sprocket; 38, first positioning wheel; 39, flip rod; 301, pressing bolt; 302, bearing; 303, pressure plate; 40, support arm; 41, two-way cylinder; 42, clamping plate; 43, sliding groove; 50, second positioning wheel; 51, rotation rod; 52, third positioning wheel. DETAILED DESCRIPTION

[0021] like Figure 1 As shown, the box-type sprocket slot frame lifting mechanism includes an active lifting mechanism 10 and a driven lifting mechanism 11; the active lifting mechanism 10 includes a base 20, a column 21 is fixedly connected to the middle position of the top of the base 20, a top plate 22 is fixedly connected to the top of the column 21, a fixed frame 23 is fixedly connected to the upper and lower sides of the front of the column 21, and a chain 24 is fixedly connected to the opposite sides of the two fixed frames 23; a lifting slot frame 25 that can move up and down is slidably connected to the outer side of the column 21.

[0022] refer to Figure 1-4The lifting trough frame 25 is provided with hard plates on the left and right rear sides. The front opposite side of the lifting trough frame 25 is fixedly connected with a connecting block 30 by bolts. The left side of the lifting trough frame 25 is fixedly connected with a mounting seat 31. The front of the mounting seat 31 is embedded with a reduction motor 32. The inside of the mounting seat 31 is rotatably connected with active rods 33 on both sides. The active rods 33 extend to the right and penetrate the surface of the mounting seat 31 and the lifting trough frame 25, and are rotatably connected with the surface of the lifting trough frame 25. The output end of the reduction motor 32 is fixedly connected with an active bevel gear 35. The active rod 33 is fixedly connected with a driven bevel gear 36. The driven bevel gear 36 is located inside the mounting seat 31, and the active bevel gear 35 is vertically meshed with the driven bevel gear 36. The active rod 33 is fixedly connected with a sprocket 37. The sprocket 37 is located inside the lifting trough frame 25, and the sprocket 37 is meshed with the chain 24. The rear side of the lifting trough frame 25 is fixedly connected with a supporting arm 40.

[0023] When in use, the reduction motor 32 is started by an external power supply, and the output end of the reduction motor 32 drives the active bevel gear 35 to rotate and drives the active rod 33 to rotate through the transmission of the active bevel gear 35 and the driven bevel gear 36. When the active rod 33 rotates, the sprocket 37 rotates along the surface of the chain 24, thereby driving the lifting slot frame 25 to move up and down.

[0024] refer to Figure 1-4 The structure of the driven lifting mechanism 11 is consistent with that of the active lifting mechanism 10, except that the mounting seat 31, the reduction motor 32, the active bevel gear 35 and the driven bevel gear 36 are missing. The active rod 33 on the driven lifting mechanism 11 and the active rod 33 on the active lifting mechanism 10 are fixedly connected with a transmission shaft 34 on the opposite side through a coupling, so that when the active rod 33 on one side rotates, the active rod 33 on the other side can be driven to rotate through the transmission shaft 34, driving the lifting slot frame 25 on the driven lifting mechanism 11 to move in the same direction. When in use, the object to be lifted is placed on the top of the support arm 40, and then the lifting slot frame 25 moving upward lifts the object to a high place until the support arm 40 contacts the surface of the top plate 22.

[0025] Preferably, a pair of first positioning wheels 38 are fixedly connected to the upper part of the active rod 33, and the first positioning wheels 38 are located inside the lifting slot frame 25. A flip rod 39 is rotatably connected to the opposite side of the front of the lifting slot frame 25, and the same first positioning wheel 38 is fixedly connected to the flip rod 39, and the first positioning wheel 38 contacts the surface of the column 21. The rear ends of the upper and lower sides of the lifting slot frame 25 are respectively provided with self-rotating rods 51, and the self-rotating rods 51 are rotatably connected to the left and right sides of the lifting slot frame 25. A pair of third positioning wheels 52 are fixedly connected to the surface of the self-rotating rod 51, and the third positioning wheels 52 contact the surface of the column 21. When the lifting slot frame 25 moves along the surface of the column 21, the first positioning wheel 38 and the third positioning wheel 52 roll along the surface of the column 21, thereby limiting the front and rear sides of the lifting slot frame 25.

[0026] Preferably, the lifting trough frame 25 is provided with a trough body (not shown in the figure) at both upper and lower ends on the left and right sides, and the second positioning wheel 50 is rotatably connected to the inside of the trough body through a movable shaft, and the inner side of the second positioning wheel 50 is in contact with the surface of the column 21. When the lifting trough frame 25 moves along the surface of the column 21, the second positioning wheels 50 on both sides roll along the surface of the column 21, thereby limiting the left and right sides of the lifting trough frame 25 when it moves. In addition, the lifting trough frame 25 is in contact with the surface of the lifting trough frame 25 through the first positioning wheel 38, the second positioning wheel 50, and the third positioning wheel 52, which reduces the friction of the contact and makes the lifting trough frame 25 move more smoothly.

[0027] refer to Figure 3 The left side of the connecting block 30 is threadedly connected with a pressing bolt 301, and a bearing 302 is arranged on the right side of the pressing bolt 301. The inner ring of the bearing 302 is fixedly connected with the pressing bolt 301, and the outer right end of the bearing 302 is fixedly connected with a pressing plate 303; when in use, by rotating the pressing bolt 301, the pressing bolt 301 rotates and drives the pressing plate 303 to move rightward through the bearing 302. The pressing plate 303 is pressed on the surface of the chain 24, so that the chain 24 is in a tight state, so that the sprocket 37 is not easy to be disconnected from the surface of the chain 24.

[0028] refer to Figure 1, a two-way cylinder 41 is fixedly connected inside the support arm 40, and a clamping plate 42 is fixedly connected to the left and right output ends of the two-way cylinder 41; sliding grooves 43 are provided on the left and right sides of the surface of the support arm 40, and the clamping plate 42 passes through the sliding grooves 43 and is slidably connected with the sliding grooves 43. When in use, after placing an object on the surface of the support arm 40, the object on the top of the support arm 40 may fall and cause loss due to human factors or collision with other objects. Therefore, when in use, the two-way cylinder 41 is started by an external power supply, and the output end of the two-way cylinder 41 extends outward to drive the clamping plates 42 on both sides to move back to each other along the inside of the sliding groove 43, thereby achieving a guiding effect on the clamping plates 42, and then the object is placed in the middle of the clamping plates 42 on both sides, and then the output end of the two-way cylinder 41 drives the clamping plates 42 to move towards each other to clamp and fix the surface of the object, thereby achieving the fixation of the object, thereby preventing the object from slipping.

[0029] The working principle of the utility model is: the reduction motor 32 is started by an external power supply, the output end of the reduction motor 32 drives the active bevel gear 35 to rotate and drives the active rod 33 to rotate through the transmission of the active bevel gear 35 and the driven bevel gear 36. When the active rod 33 rotates, the sprocket 37 rotates along the surface of the chain 24, thereby driving the lifting slot frame 25 to move up and down, and driving another active rod 33 to rotate through the transmission shaft 34, so that the two lifting slot frames 25 and the two supporting arms 40 move synchronously, driving the object to be lifted. In addition, the mechanism not only adopts a slot frame semi-box type integrated structure, which greatly improves the structural strength and low positioning accuracy, but also the positioning wheel, the transmission shaft 34 and other structures are reasonably combined and optimized, so that the mechanism has the advantages of good structural strength, high transmission efficiency, high positioning accuracy, good durability, compact structure, and low later maintenance costs.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A box-type sprocket groove frame lifting mechanism, comprising an active lifting mechanism (10) and a driven lifting mechanism (11), characterized in that: The active lifting mechanism (10) comprises a base (20), the top of the base (20) is fixedly connected to a column (21), the top of the column (21) is fixedly connected to a top plate (22), the front sides of the column (21) are fixedly connected to fixed frames (23), and the opposite sides of the two fixed frames (23) are fixedly connected to chains (24); the outer side of the column (21) is slidably connected to a lifting slot frame (25) that can move up and down, and one side of the lifting slot frame (25) is fixedly connected to a supporting arm (40); and a clamping plate (42) that can move toward or away from each other is installed on the supporting arm (40).

2. The box-type sprocket groove frame lifting mechanism according to claim 1, characterized in that: The front side opposite to the lifting trough frame (25) is fixedly connected with a connecting block (30) by bolts; one side of the lifting trough frame (25) is fixedly connected with a mounting seat (31); both sides of the interior of the mounting seat (31) are rotatably connected with a rotatable active rod (33); the active rod (33) extends to the right and penetrates through the surface of the mounting seat (31) and the lifting trough frame (25), and is rotatably connected to the surface of the lifting trough frame (25); a sprocket (37) is fixedly connected to the active rod (33); the sprocket (37) is located inside the lifting trough frame (25), and the sprocket (37) is meshed with the chain (24); one side of the active rod (33) is fixedly connected with a transmission shaft (34) by a coupling.

3. The box-type sprocket groove frame lifting mechanism according to claim 2, characterized in that: A reduction motor (32) is embedded and fixed on the front side of the mounting seat (31); an active bevel gear (35) is fixedly connected to the output end of the reduction motor (32); a driven bevel gear (36) is fixedly connected to the active rod (33); the driven bevel gear (36) is located inside the mounting seat (31), and the active bevel gear (35) is vertically meshed with the driven bevel gear (36).

4. The box-type sprocket groove frame lifting mechanism according to claim 2, characterized in that: A pair of first positioning wheels (38) are fixedly connected to the upper part of the active rod (33); a flip rod (39) is rotatably connected to the opposite side of the front face of the lifting slot frame (25); the flip rod (39) is fixedly connected to the same first positioning wheel (38); the first positioning wheel (38) contacts the surface of the column (21); a pair of self-rotating rods (51) are rotatably connected to the inner sides of the lifting slot frame (25); a pair of third positioning wheels (52) are fixedly connected to the surface of the self-rotating rods (51); the third positioning wheels (52) contact the surface of the column (21).

5. The box-type sprocket groove frame lifting mechanism according to claim 1, characterized in that: A pair of slot bodies are respectively provided on both sides of the lifting slot frame (25), and a second positioning wheel (50) is rotatably connected inside the slot body via a movable shaft, and the inner side of the second positioning wheel (50) is in contact with the surface of the column (21).

6. The box-type sprocket groove frame lifting mechanism according to claim 2, characterized in that: A pressing bolt (301) is threadedly connected to one side of the connection block (30), a bearing (302) is provided on one side of the pressing bolt (301), an inner ring of the bearing (302) is fixedly connected to the pressing bolt (301), and a pressure plate (303) is fixedly connected to one outer end of the bearing (302).

7. The box-type sprocket groove frame lifting mechanism according to claim 1, characterized in that: A bidirectional cylinder (41) is fixedly connected inside the support arm (40), and clamping plates (42) are fixedly connected to the output ends of both sides of the bidirectional cylinder (41); sliding grooves (43) are provided on both sides of the surface of the support arm (40), and the clamping plates (42) pass through the sliding grooves (43) and are slidably connected to the sliding grooves (43).

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