Automatic opening and closing lifting appliance
By designing an automatic opening and closing lifting device and adopting a cross-type four-bar clamping mechanism and opening and closing device, the automatic opening and closing of the lifting device is realized, which solves the problems of existing lifting devices requiring two people to operate, which is time-consuming, labor-intensive and poses safety hazards, and enables a single person to efficiently lift trees or rocks.
Patent Information
- Application Number
- CN202423165333.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-21
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-21
AI Technical Summary
Existing lifting equipment requires two people to operate, which is time-consuming, labor-intensive, and poses safety hazards, making it difficult to achieve single-person operation and efficient lifting of trees or rocks.
An automatic opening and closing lifting device was designed, which adopts a cross-type four-bar clamping mechanism and an opening and closing device. The automatic opening and closing of the lifting device is achieved by rotating the locking tongue. It can be operated by a single person. The combination of saw teeth and hooks increases the contact area and biting force.
It achieves automatic opening and closing of the spreader, single-person operation, saves manpower, improves work efficiency, reduces safety risks, and has a simple structure and low cost.
Smart Images
Figure CN223646144U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an automatic open-close lifting appliance, in particular to an automatic open-close lifting appliance for hoisting wood and stone blocks. BACKGROUND
[0002] In the process of felling trees and garden maintenance, trees or stone blocks that need to be carried are often encountered. The lifting appliance is usually used to carry the tree trunk and stone blocks. The conventional lifting appliance needs two people to operate, one person is responsible for opening and closing the lifting appliance, manually fixing the lifting appliance and the tree or stone block that needs to be hoisted, and the other person uses the equipment to hoist the lifting appliance. This operation is time-consuming and laborious, and is also dangerous, which can easily cause personal injury. SUMMARY
[0003] In view of the above problems, the utility model aims at providing an automatic open-close lifting appliance which is simple and compact in structure, easy to use, time-saving and labor-saving, safe and reliable, and is used for hoisting trees and stones.
[0004] The utility model adopts the following technical scheme:
[0005] An automatic open-close lifting appliance, characterized in that it comprises a main beam and two groups of cross-type four-link clamping mechanisms connected to the left and right sides of the main beam; a universal lifting ring is installed in the center of the main beam; each group of clamping mechanisms comprises an inner link plate, an outer link plate, an inner hook frame and an outer hook frame; one end of the inner and outer link plates is hinged to the main beam and can rotate around the main beam; the other end of the inner and outer link plates is hinged to one end of the inner and outer hook frames; the inner and outer hook frames are hinged in the middle through a pin shaft; the side link plates and hook frames are provided with an opener and an opener locking plate to control the opening and closing of the lifting appliance.
[0006] The left and right inner and outer hook frames are connected through one or more groups of auxiliary beams;
[0007] The opener is installed on the opener fixing beam between the left and right link plates, and the left and right hook frames are also provided with an opener locking plate matched with the opener; a clamping groove matched with the T-shaped lock tongue of the opener is formed in the center of the opener locking plate; the clamping groove is a straight groove; when the T-shaped lock tongue is parallel to the clamping groove, it can freely pass through the clamping groove; when the T-shaped lock tongue is parallel to the clamping groove, it will be clamped by the clamping groove.
[0008] The main beam comprises an outer main beam sleeve and a sleeve bolt passing through the sleeve.
[0009] The universal lifting ring comprises a semicircular ring at the upper part and a U-shaped support at the lower part; the U-shaped support is fixed to the sleeve of the main cross beam.
[0010] The inner hook frame and the outer hook frame are arc-shaped structures, and the ends are designed as hooks, which are convenient for grabbing and hoisting trees and stone blocks.
[0011] The inner side of the inner hook frame and the outer hook frame is provided with saw-shaped teeth, which increase the contact area and the engagement force of the lifting appliance with the hoisted objects such as trees and stones.
[0012] The outer side of the inner hook frame and the outer hook frame is further provided with an arc-shaped slot-shaped manual handle, which facilitates manual movement of the lifting appliance in special situations.
[0013] The opening and closing device comprises an outer sleeve, upper and lower saw-toothed pipes installed in the outer sleeve, and a lock tongue core rod installed in the upper and lower saw-toothed pipes; the outer sleeve is closed at the upper end and is open at the bottom, the lower end of the upper saw-toothed pipe and the upper end of the lower saw-toothed pipe are provided with saw-toothed grooves, a guide groove gap is formed between the upper and lower saw-toothed pipes, the lock tongue core rod is clamped in the guide groove through a cylindrical pin and can move up and down and rotate left and right, and the lower end of the lock tongue core rod is a flat T-shaped lock tongue.
[0014] The working process of the opening and closing device is as follows: when the aerially tightened lifting appliance (at this time, the lifting appliance is hoisting a heavy object) falls to the ground, the T-shaped lock tongue passes through the clamping groove of the opening and closing device lock plate, the lower end of the lock tongue core rod encounters the obstruction of the opening and closing device lock plate, the lock tongue core rod is driven to rise, the cylindrical pin of the lock tongue core rod rises along the saw-toothed groove of the upper saw-toothed pipe to the top, at this time, the lock tongue core rod is rotated by 45 degrees; when the lifting appliance is hoisted, the lock tongue core rod falls under the action of gravity, the cylindrical pin falls along the inclined surface of the saw-toothed groove of the lower saw-toothed pipe, so that the lock tongue core rod continues to rotate by 45 degrees; with each up-and-down action of the lock tongue core rod, the T-shaped lock tongue at the lower end is driven to rotate by 90 degrees, the state of the T-shaped lock tongue is changed from entering the clamping groove of the lock plate to hooking the lock plate, or the T-shaped lock tongue is changed from hooking the lock plate to rotating out of the clamping groove, so that the working state cycle of the lifting appliance is realized, i.e., the lifting appliance is released from the heavy object, then the lifting appliance is opened and locked in the opened state → the lifting appliance falls again and is tightened to hoist the heavy object → the working state cycle of the lifting appliance is released from the heavy object, then the lifting appliance is opened and locked in the opened state.
[0015] The use process of the utility model is as follows:
[0016] First, the use of the lifting appliance should be placed in the opening and closing device T-shaped lock tongue hook up the lock plate and the lifting appliance open state, then let the lifting appliance is placed above the hoisted object, the lifting appliance moves down, contact with the object, the falling state of the opening and closing device lock tongue core rod after touching the lock plate, the T-shaped lock tongue deflection 45 degrees, then the lifting appliance rises, the lock tongue core rod due to gravity, the T-shaped lock tongue deflection 45 degrees again, a total of 90 degrees deflection, make the opening and closing device T-shaped lock tongue from the lock plate slot off, at this time the inner hook frame and outer hook frame of the lifting appliance shrink, the object is stuck up, and move to the next location; reach the predetermined position, the lifting appliance falls, the hoisted object falls to the ground, at this time the opening and closing device lock tongue core rod touches the lock plate, the T-shaped lock tongue 45 degrees deflection, at this time the lifting appliance opens, the hoisted object is released, the lifting appliance rises, the lock tongue core rod due to gravity, the T-shaped lock tongue deflection 45 degrees again, hook up the lifting appliance lock plate, the lifting appliance continues to rise in the open state, ready for the next hoisting task. When the lifting appliance moves to other positions, the user will fall the open state of the lifting appliance, and again complete the hoisting operation. In the process of the above operation, the lifting appliance is under the action of the opening and closing device, realizes the "tighten the lifting appliance, lift the object, open the lifting appliance, release the object" working state cycle.
[0017] The utility model discloses a lifting appliance opening and closing device has following advantages:
[0018] (1) the utility model discloses a lifting appliance opening and closing device realizes automatic opening and closing of lifting appliance, and one person can operate, saves manpower, saves time, and improves work efficiency.
[0019] (2) the utility model discloses a lifting appliance opening and closing device realizes automatic opening and closing, and manual opening and closing of lifting appliance is not needed extra personnel, avoids the accidental danger of personnel injury, and improves the safety of use.
[0020] (3) the utility model discloses a lifting appliance opening and closing device adopts steel pipe cutting cross sawtooth groove combination guide, and the lock tongue core rod is turned up and down with cylindrical pin, which is simple in structure, easy to manufacture, low in cost, and especially suitable for lifting appliance with small load.
[0021] (4) the combination design of saw type tooth and bent hook in the inner side of lifting appliance hook frame increases the contact area and the engagement force with the hoisted object, and increases the reliability and safety of hoisting irregular objects such as trees and stones. DRAWINGS
[0022] Figure 1 It is the structural schematic diagram of the utility model embodiment 1.
[0023] Figure 2 It is the assembly schematic diagram of the lifting ring and the main cross beam in the utility model.
[0024] Figure 3 It is the whole structure (A) and the unfolded structure (B) schematic diagram of the opening and closing device of the utility model.
[0025] Figure 4Is the state diagram of the on-off device when tightening of the utility model.
[0026] Figure 5 Is the state diagram of the on-off device when opening of the utility model.
[0027] Figure 6 Is the structure diagram of embodiment 2 of the utility model.
[0028] Wherein, 1, outer hook frame, 2, inner link plate, 3, main beam, 4, on-off device, 5, universal lifting ring, 6, outer link plate, 7, inner hook frame, 8, connecting bolt, 9, pin shaft, 10, first auxiliary beam, 11, second auxiliary beam, 12, saw type tooth, 13, on-off device fixing beam, 14, on-off device lock plate, 15, clamping groove, 16, T-shaped lock tongue, 17, manual handle;3-1, main beam sleeve pipe, 3-2, sleeve bolt;4-1, outer sleeve, 4-2, upper saw tooth pipe, 4-3, cylindrical pin, 4-4, lower saw tooth pipe, 4-5, lock tongue core rod;5-1, semicircular ring, 5-2, U-shaped support. DETAILED DESCRIPTION
[0029] The utility model will be described in detail below in combination with the drawings and through specific embodiments.
[0030] Embodiment 1:
[0031] As Figure 1 shown, an automatic opening and closing lifting device, including a main beam 3 and installing in the left and right sides of the main beam two groups of cross type four connecting rod clamping mechanism, the main beam central still installs a universal lifting ring 5, each group of clamping mechanism includes inner link plate 2, outer link plate 6, inner hook frame 7, outer hook frame 1, the inner link plate 2 and outer link plate 6 one end and main beam 3 articulate, and can rotate around main beam 3, the other end of the inner link plate 2 and outer hook frame 1 articulate, the other end of outer link plate 6 and inner hook frame 7 articulate through connecting bolt 8, the inner hook frame 7 and outer hook frame 1 middle articulate through pin shaft 9, the inner link plate 2, outer link plate 6, inner hook frame 7 and outer hook frame 1 form four connecting rod clamping mechanism through the above articulated point and can rotate, realize the opening or tightening of the clamping mechanism.
[0032] The left and right outer hook frames are connected by the first auxiliary beam 10 and the second auxiliary beam 11, and the left and right inner hook frames are also connected by a group of identical auxiliary beams.
[0033] The outer hook frame 1 and the inner hook frame 7 are arc-shaped structures, and the ends are designed as hooks, facilitating the grabbing and lifting of trees and stones.
[0034] The inner sides of the outer hook frame 1 and the inner hook frame 7 are provided with saw type teeth 12 to increase the contact area and biting force of the lifting device with the lifted objects such as trees and stones.
[0035] The main beam 3 and the pin shaft 9 are provided with an opening and closing device 4 for controlling the opening or tightening state of the lifting device.
[0036] As shown in Figure 2 The main beam 3 comprises an outer main beam sleeve 3-1 and a bolt 3-2 penetrating the sleeve; the universal lifting ring comprises an upper semicircular ring 5-1 and a lower U-shaped support 5-2, and the U-shaped support 5-2 is fixed to the main beam sleeve 3-1; the semicircular ring 5-1 and the lower U-shaped support 5-2 are connected by bolts and can rotate freely.
[0037] As shown in Figure 3 The opening and closing device 4 comprises an outer sleeve 4-1, an upper serrated pipe 4-2 and a lower serrated pipe 4-4 installed in the outer sleeve, and a lock tongue core rod 4-5 installed in the upper serrated pipe 4-1 and the lower serrated pipe 4-4; the outer sleeve 4-1 is closed at the upper end and open at the bottom, and the upper serrated pipe 4-1 and the lower serrated pipe 4-2 are each provided with four serrated grooves at the lower end and the upper end, respectively, which are uniformly distributed at an interval of 90°. The upper serrated pipe and the lower serrated pipe form a guide groove, the lock tongue core rod is clamped in the guide groove through a cylindrical pin 4-3 and can move up and down and rotate left and right, and the lower end of the lock tongue core rod 4-5 is a flat T-shaped lock tongue 16.
[0038] When the lifting device falls, the T-shaped lock tongue 16 penetrates the clamping groove 15 of the lock plate 14, the lock tongue core rod 4-5 encounters the obstruction of the opening and closing device lock plate 14, drives the lock tongue core rod 4-3 to rise, the cylindrical pin 4-3 rises along the serrated groove to the top, at this time the T-shaped lock tongue rotates by 45 degrees; when the lifting device is lifted, the lock tongue core rod 4-5 falls under the action of gravity, the cylindrical pin falls along the inclined surface of the serrated groove, so that the T-shaped lock tongue 16 continues to rotate by 45 degrees; with each up and down action of the lock tongue core rod 4-5, the lower end T-shaped lock tongue 16 rotates by 90 degrees, and the state of the T-shaped lock tongue 16 changes from being clamped by the clamping groove 15 of the lock plate 14 (as shown in Figure 4 ) to being released from the clamping groove 15 (as shown in Figure 5 ), so as to realize the working state cycle of opening the lifting device → tightening the lifting device → opening the lifting device → tightening the lifting device.
[0039] Example 2:
[0040] As shown in Figure 6 The automatic opening and closing lifting device is similar to that of example 1, and the difference lies in that the outer side of the inner hook frame and the outer hook frame is further provided with an arc-shaped slot-shaped manual handle 17, so as to facilitate manual movement of the lifting device in special circumstances.
[0041] The use process of the utility model is as follows:
[0042] First, the use of the time should be placed in the opening and closing device T-shaped lock tongue 16 hook lock plate and spread state of the spreader, and then let the spreader placed above the hoisting object, the spreader down, contact with the goods, the falling state of the opening and closing device lock tongue core rod 4-5 after the lock plate 14, the T-shaped lock tongue 16 deflection 45 degrees, and then the spreader rises, the lock tongue core rod 4-5 due to gravity, the T-shaped lock tongue 16 deflection 45 degrees, a total of 90 degrees of deflection, so that the opening and closing device T-shaped lock tongue 16 from the lock plate slot 15 off, at this time the inner hook frame 7 and the outer hook frame 1 of the spreader shrink, the goods are stuck up, and move to the next location; to reach the predetermined position, the spreader down, hoisting object landing, at this time the opening and closing device lock tongue core rod 4-5 touch lock plate 14, the T-shaped lock tongue 16 deflection 45 degrees, the spreader open, hoisting goods release; the spreader rises, the lock tongue core rod 4-5 due to gravity, the T-shaped lock tongue 16 deflection 45 degrees, hooking the spreader lock plate 14, the spreader in the open state continues to rise, ready for the next hoisting task. When the spreader to other locations, the user will keep the open state of the spreader down, again to complete the hoisting operation. In the process of the above operation, the spreader under the action of the opening and closing device 4, "tighten the spreader → lifting the goods → open the spreader → release the goods" work state cycle.
[0043] The above, only the preferred embodiment of the present application, not to limit the application, any simple modification, change and equivalent structure change according to the technical essence of the application above, all still belong to the scope of the present application.
Claims
1. An automatic opening and closing spreader, characterized by, The utility model relates to a crane, which comprises a main beam (3) and two groups of cross type four connecting rod clamping mechanisms connected to the left and right sides of the main beam (3); a universal sling (5) is installed in the center of the main beam (3); each group of clamping mechanisms comprises an inner connecting plate (2), an outer connecting plate (6), an inner hook frame (7) and an outer hook frame (1); one end of the inner connecting plate (2) and the outer connecting plate (6) is hinged to the main beam (3) and can rotate around the main beam (3); the other end of the inner connecting plate (2) is hinged to the outer hook frame (1), and the other end of the outer connecting plate (6) is hinged to the inner hook frame (7) through a connecting bolt (8); the inner hook frame (7) and the outer hook frame (1) are hinged through a pin shaft (9); an opener (4) is installed between the main beam (3) and the pin shaft (9) to control the opening and closing of the lifting appliance; the opener (4) is installed on an opener fixing beam (13) between the left and right connecting plates; the outer hook frame (1) on the left side and the outer hook frame on the right side are further provided with an opener locking plate (14) matched with the opener (4); the opener locking plate (14) is provided with a clamping groove (15) in the center, which is matched with a T-shaped locking tongue (16) of the opener.
2. The automatic opening and closing spreader according to claim 1, characterized in that The outer hook frame (1) on the left side and the outer hook frame on the right side are connected through one or more groups of auxiliary beams.
3. The automatic opening and closing spreader according to claim 1, characterized in that, The main beam (3) comprises an outer main beam sleeve (3-1) and a sleeve bolt (3-2) penetrating through the sleeve.
4. The automatic opening and closing spreader according to claim 1, characterized in that, The universal sling (5) comprises a semicircular ring (5-1) in the upper part and a U-shaped support (5-2) in the lower part, and the U-shaped support (5-2) is fixed to the main beam sleeve (3-1).
5. The automatic opening and closing spreader according to claim 1, characterized in that, The inner hook frame (7) and the outer hook frame (1) are in an arc-shaped structure.
6. The automatic opening and closing spreader according to claim 1, characterized in that, The inner hook frame (7) and the outer hook frame (1) are designed as hooks at the ends.
7. The automatic opening and closing spreader according to claim 1, characterized in that, The inner side of the inner hook frame (7) and the outer hook frame (1) is provided with saw-shaped teeth (12).
8. The automatic opening and closing spreader according to claim 1, characterized in that, The outer side of the inner hook frame (7) and the outer hook frame (1) is further provided with an arc-shaped slot-shaped manual handle (17).