Simple lifting device capable of being used in horizontal manhole and vertical hole
By designing a simple lifting device suitable for horizontal manholes and vertical holes, the problem that the prior art cannot be applied to these scenarios at the same time is solved, safe and convenient lifting operations are achieved, and risks and wear are reduced.
Patent Information
- Application Number
- CN202422289366.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The prior art cannot be applied to lifting operations of horizontal manholes and vertical holes at the same time, resulting in risks and inconveniences in lifting operations in these scenarios.
A simple lifting device including a lifting main rod, a fixed pulley, a winch, a wire rope and a hanging frame is designed, which can perform vertical or inclined lifting operations at horizontal manholes and vertical openings.
The device can safely and conveniently lift the horizontal manhole and vertical holes, replacing the traditional tripod vertical lifting device, reducing the risk of falling and reducing the wear of the wire rope.
Smart Images
Figure CN222948043U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of emergency rescue equipment, can vertically lift or tilt personnel, and can also be used for small-scale hoisting and lifting operations in the production field. Specifically, it is a simple lifting device that can be used for both horizontal manholes and vertical openings. Background Art
[0002] When entering confined spaces such as tanks, tanks or towers through high-level horizontal manholes for emergency rescue, it is necessary to quickly lift the distressed people at the bottom to the high-level horizontal manhole and transfer them out; when performing emergency rescue at the vertical hole opening, it is also necessary to lift and pull heavy objects or people; during production and maintenance, it is often necessary to transport materials and spare parts in and out through horizontal manholes. At present, when performing lifting operations at vertical hole openings, tripod vertical lifting devices are mainly used, but they cannot be used for horizontal manholes. It is necessary to use fixed pulleys suspended on the frame pipe or temporarily select anchor points to suspend fixed pulleys for lifting operations, but the risk of falling caused by bending of the frame pipe, skewed support and loose anchor points is relatively high. When conditions permit, a crane is used to pull and slant at the manhole, but this will cause certain wear on the wire rope, and the key is that this is an illegal operation. Utility Model Content
[0003] The utility model aims to solve the technical problem that the current pressure vessel field lacks a device that can be used for lifting operations of both horizontal manholes and vertical openings, and provides a simple lifting device that can be used for both horizontal manholes and vertical openings.
[0004] The utility model is realized by adopting the following technical scheme: a simple lifting device which can be used for both horizontal manholes and vertical openings comprises a lifting main rod; a main rod bottom cross bar is welded at the end of the lifting main rod, connecting rings are installed at both ends of the main rod bottom cross bar, a fixed pulley is installed at the front end of the lifting main rod through a fixed pulley bracket, a winch is installed at the middle and rear part of the lifting main rod through a winch fixed base, a steel wire rope is wound around the winch, one end of the steel wire rope passes around the winch and then around the fixed pulley and is connected to a hook; a front limit baffle and a rear limit baffle are installed at a certain distance between the fixed pulley bracket and the winch fixed base of the lifting main rod, a groove roller is provided between the front limit baffle and the rear limit baffle, and the winch and the groove roller are located opposite to the lifting main rod. on the two side walls; it also includes a cross joist and two V-shaped hangers, a roller bearing matching the groove roller is installed in the middle of the cross joist, connecting rings are symmetrically arranged at both ends of the cross joist, and connecting rings are installed on the top and both ends of the hanger; the connecting rings at both ends of the hanger can be docked with the cross joist and the connecting rings at both ends of the bottom cross bar of the main rod and connected by bolts; anti-slip groove baffles are symmetrically arranged on both sides of the roller bearing on the cross joist, and the spacing between the anti-slip groove baffles matches the outer width of the groove roller; the anti-slip groove baffles are equipped with lifting main rod positioning lock pins, and also include two auxiliary rods, a connecting ring is welded on the top of the auxiliary rod; the auxiliary rod bottom cross bar is vertically symmetrically welded at the bottom of the auxiliary rod; the connecting ring on the top of the auxiliary rod can be docked with the connecting ring on the hanger and the cross joist and connected with bolts.
[0005] Furthermore, a fixed pulley bracket is welded to the end of the lifting main rod, and the fixed pulley bracket is installed on the fixed pulley bracket through a bolt pin shaft. The axis of the fixed pulley is perpendicular to the lifting main rod, and the plane where the wire rope groove of the fixed pulley is located remains in the same plane as the lifting main rod.
[0006] Furthermore, the fixed pulley bracket sinks to the side opposite to the capstan.
[0007] Furthermore, the center line of the grooved roller and the wire rope groove of the fixed pulley are kept in the same plane (referring to the same vertical plane); the depth of the groove matches the height of the roller bearing.
[0008] Furthermore, a level is installed on the bottom cross bar of the main pole.
[0009] When the device is used for lifting operations at the horizontal manhole, the cantilever length of the lifting main rod extending into the manhole can be appropriately adjusted to prevent the heavy objects from scratching the tank wall; when it is lifted to the height of the horizontal manhole axis, the lifting main rod is pulled outward to make it slide on the cross support beam, so that the heavy objects can be horizontally moved to the edge of the manhole opening, which is convenient for transportation; the cross support beam and the lifting main rod are both at a high position in the manhole, and there is ample space for heavy objects or personnel to enter and exit the manhole; the hanger and the connecting ring are hinged, and the pitch and forward and backward sliding movement of the lifting main rod are not affected; when there is a need for lifting operations at the vertical hole opening, a vertical lifting device can be assembled to complete the lifting task, so this device can completely replace the currently commonly used emergency rescue equipment tripod vertical lifting device; a spirit level is attached to the cross bar at the bottom of the lifting main rod, which can monitor the horizontal state of the fixed pulley axis at any time to prevent the wire rope from escaping from the fixed pulley rope groove and the lifting center of gravity from deviating; using a winch for lifting is safe, labor-saving, convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 A schematic diagram of the structure of the lifting main rod of the utility model.
[0011] Figure 2 Schematic diagram of the crossbeam structure.
[0012] Figure 3 Schematic diagram of suspended cantilever lifting at manhole.
[0013] Figure 4 Schematic diagram of the vertical support lifting of the tripod.
[0014] 1-lifting main rod, 11-main rod bottom cross bar, 12-level meter, 13-fixed pulley bracket, 14-groove roller, 15-front limit baffle, 16-rear limit baffle, 17-capstan fixing base; 2-fixed pulley, 3-cross support beam, 31-roller bearing, 32-anti-slip groove baffle, 33-lifting main rod positioning lock pin; 4-hanging bracket, 5-connecting ring, 6-capstan, 7-wire rope, 8-hook, 9-auxiliary rod, 91-auxiliary rod bottom cross bar. DETAILED DESCRIPTION
[0015] The emergency rescue equipment in stock in enterprises generally has a tripod vertical lifting device, but it can only be used for lifting operations at vertical openings, and cannot be used for horizontal manholes whose entrances and exits are opened on vertical walls of towers, tanks, tanks, etc. The utility model is a simple lifting device that can be used for both horizontal manholes and vertical openings. When there is a need for lifting operations at the horizontal manhole, its components are transported to the work site and quickly installed: the cross beam is suspended and fixed at the highest bolt hole of the horizontal manhole with a hanger, and the lifting main rod is buckled on the roller bearing of the cross beam and slides into the horizontal manhole. After adjusting the cantilever length of the lifting main rod extending into the horizontal manhole, it is locked, and the auxiliary rod is connected and anchored in place before the lifting and lowering operation can be started. The auxiliary rod support method can also be used for lifting operations at vertical openings. When there is no power supply at the work site, a manual winch is used to vertically lift or tilt and pull personnel, which is labor-saving and uniform in force; when the work site is equipped with a maintenance power supply, the manual winch can be replaced with an electric winch, which will be faster and more efficient.
[0016] The following is a specific embodiment of the utility model. The utility model is a simple lifting device that can be used for both horizontal manholes and vertical openings, and mainly includes the following components: a lifting main rod 1; a main rod bottom cross bar 11 is vertically and symmetrically welded to the bottom of the lifting main rod 1; a level 12 is installed on the main rod bottom cross bar 11; a fixed pulley bracket 13 is welded to the end of the lifting main rod 1, and a bolt pin is used to fix the fixed pulley 2 on the fixed pulley bracket 13, the axis of the fixed pulley 2 is perpendicular to the lifting main rod 1, and the plane where the steel wire rope groove of the fixed pulley 2 is located is kept in the same plane as the lifting main rod 1 and should keep the plumb bob. In order to lower the center of gravity during lifting, the fixed pulley bracket 13 is slightly sunken downward (such as Figure 1As shown, it sinks to the left, opposite to the side where the winch is located), it is better to make the fixed pulley wire rope groove flush with the upper part of the lifting main rod 1 to ensure that the wire rope 7 will not be worn; in order to prevent the wire rope from slipping out of the groove or the lifting center of gravity from deviating during lifting, the fixed pulley axial direction should be kept horizontal during lifting operation, and the main rod bottom cross bar 11 is parallel to the axis of the fixed pulley 2, so pay attention to observe the level meter 12 during lifting operation to keep the main rod bottom cross bar 11 horizontal; connecting rings 5 are symmetrically arranged at both ends of the cross support beam 3, and the end of the isosceles triangle hanger 4 (the isosceles triangle lacks the bottom edge and is actually V-shaped) is also provided with a connecting ring 5. After the hanger is hinged to the cross support beam with bolts, Hang the cross support beam 3 at the highest bolt hole in the manhole (lifting operation at the manhole); the cross support beam 3 should be kept in a horizontal state as much as possible; install a reinforcement sleeve on the front half of the lifting main rod 1, and the bottom of the reinforcement sleeve has a groove roller 14; the center line of the groove roller 14 and the wire rope groove of the fixed pulley 2 should be kept in the same plane (same vertical plane); the inner width of the groove roller 14 should match the width of the roller bearing 31 set in the middle of the cross support beam 3, and anti-slip groove baffles 32 are symmetrically arranged on both sides of the roller bearing 31 on the cross support beam, and the spacing between the anti-slip groove baffles 32 matches the outer width of the groove roller 14; the groove depth should match the height of the roller bearing 31. When the lifting main rod 1 slides on the roller bearing 31 on the cross support beam 3, the bottom edge of the groove roller shall not rub against the cross support beam 3; after the cross support beam 3 is fixed to the bolt hole at the highest point of the manhole (fixed by connecting rings and bolts), lift the lifting main rod 1 through the hanger 4 and buckle it on the cross support beam 3, slide forward and extend into the manhole, and after the cantilever length of the lifting main rod 1 is selected appropriately, use the lifting main rod positioning lock pin 33 to lock it. The lifting main rod positioning lock pin 33 is symmetrically arranged on the anti-slip groove when plate 32 on the cross support beam 3 by thread combination. Screw the two symmetrically arranged lifting main rod positioning lock pins 33, and the pins are pushed forward and tightly pressed against the outside of the groove roller, so that the cross support beam and the lifting main rod 1 can be locked together; the front end of the groove roller 14 of the lifting main rod 1 is provided with a front limit baffle 15, and the rear end is provided with a rear limit baffle 16. The capstan fixing seat 17 is symmetrically welded with the plumb surface upward in the middle and rear part of the lifting main rod 1; after the capstan 6 is installed and fixed in place, the drum axis of the capstan 6 should be parallel to the fixed pulley axis and symmetrically evenly distributed; two auxiliary rods 9; a connecting ring 5 is welded on the top of the auxiliary rod; the auxiliary rod bottom cross bar 91 is vertically and symmetrically welded at the bottom of the auxiliary rod; the connecting rings 5 are symmetrically welded at both ends of the main rod bottom cross bar 11; the connecting rings 5 are also symmetrically welded at both ends of the auxiliary rod bottom cross bar; finally, the bottom cross bar of the lifting main rod is hinged with the auxiliary rod through the hanger, and after the auxiliary rod is fixed, the wire rope and hook are pulled out to start the lifting operation. The capstan 6, wire rope 7 and hook 8 are all finalized products and can be purchased in combination. When lifting at the vertical opening, after the cross support beam 3 slides to the top of the lifting main rod, that is, the front end of the groove roller 14, the front limit stop plate 15 will be blocked on the cross support beam. The cross support beam, supported by two auxiliary rods, together with the lifting main rod, forms a vertical lifting device to complete the lifting task at the vertical opening.
[0017] The connecting ring at the top of the hanger is connected to the bolt holes at the top of the manhole by bolts, so the direction (axial direction) of the hanger and the connecting rings at both ends is perpendicular.
[0018] The practical application of the present invention is further described below in conjunction with the accompanying drawings. Figure 3 As shown, the suspended cantilever lifting operation at the horizontal manhole: install the fixed pulley 2 on the fixed pulley bracket 13 of the lifting main rod 1; hinge the isosceles triangle hanger 4 with the connecting ring 5 on the cross beam 3 with bolts, and then suspend the cross beam 3 at the highest bolt hole in the manhole through the triangular hanger 4; install the winch 6 on the winch fixing base 17 of the lifting main rod 1; lift the lifting main rod 1 through the hanger 4 and then set it on the cross beam 3, confirm that the groove roller 14 is stably buckled into the roller bearing 31, pull out the wire rope 7 through the hanger 4 and send it into the rope groove of the fixed pulley 2, and the hook 8 is suspended; hinge another isosceles triangle hanger 4 with the end of the bottom cross bar 11 of the main rod with the connecting ring 5, and then connect the top of the hanger with the top of the auxiliary rod 9 through the connecting ring After hinged, lift the bottom cross bar 11 of the main pole and push the lifting main pole 1 to slide on the cross beam 3 into the manhole. When the cantilever length of the lifting main pole extending into the manhole is appropriate (when the lifting main pole is extended to the limit position, the rear limit stopper 16 will be blocked on the cross beam to prevent it from falling out of the groove), symmetrically screw and push the lifting main pole positioning lock pin 33 to lock the lifting main pole 1. Finally, anchor the auxiliary bottom cross bar 91 at the appropriate position of the running platform at the manhole (the height of the manhole centerline from the running platform is generally about 1.5 meters. When the height difference is not large, the height can be adjusted by the pitch of the lifting main pole). When the lifting hook 8 is subjected to force, pay attention to keeping the bottom cross bar 11 of the main pole horizontal to keep the fixed pulley axis horizontal to prevent the lifting center of gravity from deviating, the main pole from being unbalanced, and the wire rope from falling out of the groove. The winch has a two-way self-locking function. When the hook is lowered, additional pulling force is required and the winch is turned. The items to be lifted are tied securely, the hook is hung at the center of gravity, and the hook safety lock is fastened, then a trial lift is notified. The winch is slowly turned to lift 200mm and then checked. After confirmation, it is lifted to the height of the manhole axis. The personnel outside the manhole grasp the bottom cross bar of the lifting main rod and then screw the lifting main rod positioning lock pin 33 to withdraw. After unlocking, pull the lifting main rod to slide outward, so that the lifted object is close to the edge of the manhole mouth, and then it can be easily transported.
[0019] like Figure 4The figure shows the lifting operation at the vertical hole opening: buckle the groove roller of the lifting main rod downward on the roller bearing of the cross support beam, adjust the position of the cross support beam to the top of the lifting main rod, that is, the cross support beam is blocked at the front limit stop plate 15, lock the lifting main rod positioning lock pin 33, hinge the top connecting rings 5 of the two auxiliary rods with the connecting rings 5 at both ends of the cross support beam respectively, lift the head of the lifting main rod, and pull back the auxiliary rod. According to the diameter of the hole, support the auxiliary rod bottom cross bar 91 of the auxiliary rod 9 near the hole opening. After adjusting the position of the lifting main rod so that the rope outlet side of the fixed pulley faces the center of the wellhead, tighten and fix the bolts of the hinged connection rings 5 at both ends of the cross beam, and finally use wire or chain to connect all the connection rings of the bottom cross bar in series and lock them; a wide and thick wooden pad should be added under the bottom cross bar; because the lifting center of gravity is close to the cross beam, a small counterweight can be added to the bottom cross bar 11 of the main rod, and finally the winch is fixed to the lifting main rod, and the wire rope and hook are pulled out to bypass the rope groove of the fixed pulley and then sent into the hole. During the operation, the level gauge on the bottom cross bar of the lifting main rod should be observed in real time to keep the axis of the fixed pulley horizontal to prevent the occurrence of abnormal working conditions such as deviation of the lifting center of gravity, imbalance of the lifting main rod, and separation of the wire rope from the rope groove of the fixed pulley. The hinge between the connection rings mentioned above refers to passing the bolts through the two connection rings and tightening the two by tightening the nuts; of course, the nuts can also be loosened to appropriately adjust the connection angle between the two.
[0020] Technical features of this utility model:
[0021] 1. A reinforcement sleeve is installed on the front half of the lifting main rod, and the bottom of the reinforcement sleeve has a grooved roller, which further strengthens the structure;
[0022] 2. A roller bearing is provided in the middle of the cross beam, and the inner width of the groove roller is matched with it;
[0023] 3. Anti-slip groove baffles are symmetrically arranged on both sides of the roller bearing of the cross beam, and the distance between the baffles matches the outer width of the groove;
[0024] 4. The cantilever length of the lifting main rod can be adjusted;
[0025] 5. The lifting main rod positioning lock pin is symmetrically set on the anti-slip groove baffle plate on the cross beam by thread combination. Screw the two symmetrically set positioning lock pins, and the pins are pushed forward and pressed against the outside of the groove roller, so that the cross beam and the lifting main rod can be locked together;
[0026] 6. The lifting main rod slides on the horizontal support beam, and the heavy objects can be moved horizontally to the edge of the manhole, which is convenient for transportation;
[0027] The cross beam and lifting main rod are both at the high position of the manhole, so there is ample space for heavy objects or people to enter and exit the manhole;
[0028] 7. The hanger and the connecting ring are hinged, so the main pole will not be affected when it is lifted, pitched, or slid forward and backward;
[0029] 8. A level gauge is attached to the bottom crossbar of the lifting main rod, which can monitor the horizontal state of the fixed pulley axis at any time to prevent the wire rope from escaping from the fixed pulley groove and the lifting center of gravity from deviating;
[0030] 9. A front limit stop plate is arranged at the front end of the groove roller of the lifting main rod, and a rear limit stop plate is arranged at the rear end.
Claims
1. A simple lifting device that can be used for both horizontal manholes and vertical openings, characterized in that: The invention comprises a lifting main rod (1); a main rod bottom cross bar (11) is welded at the end of the lifting main rod (1); connecting rings (5) are installed at both ends of the main rod bottom cross bar (11); a fixed pulley (2) is installed at the front end of the lifting main rod (1) through a fixed pulley bracket (13); a winch (6) is installed at the middle and rear part of the lifting main rod (1) through a winch fixing base (17); a steel wire rope (7) is wound around the winch (6); one end of the steel wire rope (7) passes around the winch (6) and then passes around the fixed pulley (2) and is connected A hook (8) is connected; a front limit stop plate (15) and a rear limit stop plate (16) are installed at a certain distance between the lifting main rod (1) between the fixed pulley bracket (13) and the capstan fixed base (17); a groove roller (14) is provided between the front limit stop plate (15) and the rear limit stop plate (16) of the lifting main rod (1), and the capstan (6) and the groove roller (14) are located on two opposite side walls of the lifting main rod (1); and a cross beam (3) and two V-shaped The hanger (4) is provided with a roller bearing (31) matching the groove roller (14) in the middle of the cross beam (3), connecting rings (5) are symmetrically arranged at both ends of the cross beam (3), and connecting rings (5) are installed at the top and both ends of the hanger (4); the connecting rings (5) at both ends of the hanger (4) can be butted with the connecting rings (5) at both ends of the cross beam (3) and the main rod bottom cross bar (11) and connected by bolts; the cross beam (3) is symmetrically provided with anti-slipping The groove baffle plate (32) has a spacing that matches the outer width of the groove roller (14); the anti-slip groove baffle plate (32) is provided with a lifting main rod positioning lock pin (33), and also includes two auxiliary rods (9), the top of the auxiliary rod (9) is welded with a connecting ring (5); the bottom of the auxiliary rod (9) is vertically symmetrically welded with an auxiliary rod bottom cross bar (91); the top connecting ring (5) of the auxiliary rod (9) can be connected to the connecting ring (5) on the hanger (4) and the cross beam (3) and connected with bolts.
2. A simple lifting device that can be used for both horizontal manholes and vertical openings as claimed in claim 1, characterized in that: A fixed pulley bracket (13) is welded to the end of the lifting main rod (1), and the fixed pulley bracket (13) is used to mount the fixed pulley (2) on the fixed pulley bracket (13) through a bolt pin. The axis of the fixed pulley (2) is perpendicular to the lifting main rod (1), and the plane where the steel wire rope groove of the fixed pulley (2) is located is kept in the same plane as the lifting main rod (1).
3. A simple lifting device that can be used for both horizontal manholes and vertical openings as claimed in claim 2, characterized in that: The fixed pulley bracket (13) is sunken toward the side opposite to the capstan (6).
4. A simple lifting device that can be used for both horizontal manholes and vertical openings as described in any one of claims 1 to 3, characterized in that: The center line of the grooved roller (14) and the wire rope groove of the fixed pulley (2) are kept in the same plane; the depth of the groove matches the height of the roller bearing (31).
5. A simple lifting device that can be used for both horizontal manholes and vertical openings as described in any one of claims 1 to 3, characterized in that: A level gauge (12) is mounted on the main rod bottom cross bar (11).
6. A simple lifting device that can be used for both horizontal manholes and vertical openings as claimed in claim 4, characterized in that: A level gauge (12) is mounted on the main rod bottom cross bar (11).
7. A simple lifting device that can be used for both horizontal manholes and vertical openings as described in any one of claims 1 to 3, characterized in that: The lifting main rod (1) is sleeved with a reinforcement sleeve between the front limit stop plate (15) and the rear limit stop plate (16), and the groove roller (14) is opened at the bottom of the reinforcement sleeve.