CN115490109A

CN115490109A - Lifting device with high safety performance

Info

Publication number: CN115490109A
Application number: CN202211360936.6A
Authority: CN
Inventors: 林如锡; 杨彪; 吴子剑
Original assignee: GUANGDONG INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND RESEARCH ZHONGSHAN BRANCH; Guangdong Haoxiang Machinery Manufacturing Co ltd
Current assignee: GUANGDONG INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND RESEARCH ZHONGSHAN BRANCH; Guangdong Haoxiang Machinery Manufacturing Co ltd
Priority date: 2022-11-02
Filing date: 2022-11-02
Publication date: 2022-12-20

Abstract

The invention discloses a high-safety lifting device, which comprises a main body frame, wherein a lift car is arranged in the main body frame, lifting mechanisms capable of driving the lift car to move up and down are symmetrically arranged on two sides of the main body frame, top anti-falling mechanisms are respectively arranged on two sides of the top of the lift car, a brake pipe is arranged on the main body frame, an eccentric wheel mechanism is arranged on the brake pipe and fixedly arranged on the lift car, an inner door frame is arranged at an inlet and an outlet of the lift car, a counterweight door is arranged in the inner door frame in a sliding manner, a driving mechanism capable of driving the counterweight door to lift is arranged on the inner door frame, an outer door frame is arranged at an inlet of the main body frame, outer door bodies are respectively arranged on two sides of the outer door frame, an electric mortise lock is arranged between the outer door frame and the outer door body, and the electric mortise lock is connected with a control switch. The lifting device has the advantages of simple structure, good anti-falling effect and good safety performance.

Description

Lifting device with high safety performance

Technical Field

The invention relates to the technical field of lifting devices, in particular to a lifting device with high safety performance.

Background

Lifting type lifting platform, pump oil through hydraulic pressure station, the piston rod of hydro-cylinder stretches out and drives the chain through the sprocket and rise, under the effect of chain tension, platform platen and goods rise, otherwise, open the solenoid valve, platform and goods descend, at the whole lift in-process of platform, the dead weight of platform and the weight of goods are born by the chain, so the intensity of chain is vital, for preventing the unexpected fracture of chain, the method of using always adds a set of wire rope and regards as auxiliary protection, in the design of platform, the selection of chain all will surpass more than 5 times of rated load, wire rope is as the protection of assisting the rib, its tensile strength is lower than the chain, if the chain fracture, wire rope is not enough to bear corresponding weight, can not play the guard action effectively. In order to solve the problem, the anti-falling mechanism is generally arranged on a hydraulic lifting platform at present, but the structure of the existing anti-falling mechanism is relatively complex, and the anti-falling effect is relatively poor.

In addition, when the goods outlet is a wall opening of a building, a safety door needs to be arranged at the wall opening to prevent people from falling accidentally. At present, the safety door is mostly opened and closed by adopting a manual push rod lock structure; in order to improve safety, a limit stop is added at the position of the push rod to detect whether the safety door is correctly closed. However, such a safety door does not prevent a user from being out of the elevator floor safety door to the extent that an accident casualty accident occurs.

Therefore, the existing lifting device is to be further improved.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the lifting device with simple structure, good anti-falling effect and good safety performance.

In order to achieve the purpose, the invention adopts the following scheme:

the utility model provides a high security performance's elevating gear, including main body frame be equipped with the car in the main body frame both sides symmetry is provided with and orders about the lifting mechanism that the car reciprocated, its characterized in that: be equipped with the top respectively on the car top both sides and prevent weighing down the mechanism be equipped with the brake pipe on the main body frame be equipped with eccentric wheel mechanism on the brake pipe, eccentric wheel mechanism is fixed to be set up on the car the entry and exit department of car is equipped with interior portal it is provided with the counter weight door to slide in the interior portal be equipped with on the interior portal and drive the actuating mechanism that the counter weight door goes up and down is provided with outer portal in main body frame entry department be equipped with the outer door body on the outer portal both sides respectively be equipped with the electric mortiser lock between outer portal and the outer door body, the electric mortiser lock is connected with control switch.

As another improvement of the high-safety lifting device, the top anti-falling mechanism comprises a mounting base arranged on the top of the car, an anti-falling hanging rod is movably arranged at the front part of the mounting base, an electric push rod capable of driving the anti-falling hanging rod to extend out and be lapped on the main body frame is arranged at the rear part of the mounting base, and the movable end of the electric push rod is connected with the rear end of the anti-falling hanging rod.

As another improvement of the high-safety lifting device, a guide sleeve is fixedly arranged at the front part of the mounting base through a fixed lug plate, the anti-falling hanging rod is movably arranged in the guide sleeve, a travel switch assembly induction rod is arranged at the joint of the anti-falling hanging rod and the electric push rod, a travel switch assembly is arranged on the mounting base and is connected with the electric push rod, the travel switch assembly comprises a supporting seat arranged on the mounting base, a mounting platform is arranged between the supporting seat and the fixed lug plate, a first travel switch is arranged on one side of the front end of the mounting platform, a first rocker arm matched with the travel switch assembly induction rod is arranged on the outer side of the first travel switch, a second travel switch is arranged on one side of the rear end of the mounting platform, a second rocker arm matched with the travel switch assembly induction rod is arranged on the outer side of the second travel switch, and the first travel switch and the second travel switch are respectively connected with the electric push rod.

As another improvement of the lifting device with high safety performance, the eccentric wheel mechanism comprises a bottom plate, guide wheel sets capable of movably clamping the brake pipe are arranged on the front end face of the bottom plate at intervals along the vertical direction, two eccentric wheels are arranged on the front end face of the bottom plate between the two guide wheel sets at intervals from left to right, arc-shaped transmission teeth are arranged at the rear ends of the eccentric wheels, transmission gears meshed with the arc-shaped transmission teeth are arranged on the front end face of the bottom plate, movable slotted holes are formed in the front end face of the bottom plate between the eccentric wheels, a connecting main shaft is arranged in each movable slotted hole, a driving rack is arranged at the front end of the connecting main shaft and is respectively meshed with the transmission gears at two sides, the rear end of the connecting main shaft is fixedly arranged on the bottom of the lift car through a mounting seat, abdicating notch grooves are formed in opposite side walls of the eccentric wheels, the brake pipe is positioned between the two abdicating notch grooves, and a plurality of clenching teeth are arranged on the outer walls of the lower sides of the abdicating notch grooves at intervals.

As another improvement of the lifting device with high safety performance, the lifting mechanism comprises an oil cylinder arranged in the side wall of the main body frame, an oil cylinder cross beam is arranged at the movable end of the oil cylinder, guide pulleys are respectively arranged at two ends of the oil cylinder cross beam, guide slide rails are arranged at the corresponding positions of the main body frame and the guide pulleys, the guide pulleys are arranged in the guide slide rails, lifting chain wheels are respectively arranged at two sides of the upper end surface of the oil cylinder cross beam, chain hangers are arranged at the side wall of the lower end of the car, a chain connecting seat is arranged at the side wall of the middle part of the main body frame, one end of a lifting chain is fixedly connected to the chain hangers, the other end of the lifting chain is fixedly connected to the chain connecting seat, and the lifting chain is wound on the lifting chain wheels.

As another improvement of the lifting device with high safety performance, the driving mechanism comprises bearing seats arranged at intervals on the upper end of an inner gantry, bearings are arranged on the bearing seats, a hoisting shaft is arranged in the bearings, first transmission chain wheels are respectively arranged at two ends of the hoisting shaft, a second transmission chain wheel is arranged in the middle of each bearing, a driving motor is arranged on the inner gantry, a driving chain wheel is arranged on a motor shaft of the driving motor, a driving chain is arranged between the driving chain wheel and the second transmission chain wheel, connecting seats are respectively arranged at two sides of the counterweight door, the connecting seats are connected with one ends of the transmission chains, the other ends of the transmission chains are connected with counterweight blocks, and the transmission chains are wound on the first transmission chain wheels.

As another improvement of the high-safety lifting device, a mechanical lock is arranged between the outer door body and a main body frame of the lifting device, the mechanical lock comprises a lock catch arranged on the lower portion of the inner side face of the outer door body, a base is arranged on an outer door frame on one side of the lock catch, a lock hook is hinged to the front side, close to the lock catch, of the base, a guide wheel mechanism is arranged on the rear side of the base, a driving deflector rod is hinged to the left side of the base, a traction rope is arranged at the upper end of the driving deflector rod, the traction rope bypasses the guide wheel mechanism and then is connected with the inner side of the lock hook, a driving head is arranged at the lower end of the driving deflector rod, a return spring is arranged between the base and the upper portion of the driving deflector rod, and an extrusion guide block matched with the driving head is arranged on the side wall of the lower end of the lift car.

As another improvement of the lifting device with high safety performance, the main body frame comprises frame bodies which are arranged in bilateral symmetry, each frame body comprises I-shaped channel steel which is arranged at a front-back interval, wheel carriers are arranged at positions of the car corresponding to the I-shaped channel steel, large guide wheels are arranged on the inner sides of the wheel carriers, the inner side surfaces of the I-shaped channel steel abut against the large guide wheels, small guide wheels are symmetrically arranged on the outer sides of the wheel carriers at a front-back interval, and the small guide wheels abut against the inner walls of the I-shaped channel steel.

As another improvement of the lifting device with high safety performance, a falling prevention device is arranged between the outer wall of the car and the main body frame.

As another improvement of the lifting device with high safety performance, a plurality of shock absorption columns are uniformly distributed at the lower end of the lift car.

In summary, compared with the prior art, the invention has the beneficial effects that:

the anti-falling hanging rod is driven by the electric push rod to extend out and overlap or bear on the main body frame, so that the accident that the lift car falls accidentally is effectively prevented. In addition, the brake pipe is matched with the eccentric wheel mechanism, so that the brake pipe is bitten by the car instantly when the car drops instantly, the car is effectively prevented from falling, and potential safety hazards are reduced.

The elevator car is simple in structure and convenient to use, the electric mortise lock is arranged between the outer door body and the outer door frame, the outer door body can be effectively locked through the electric mortise lock, and therefore the accident of falling of personnel is effectively prevented after the car leaves. The counterweight door can be driven by the driving mechanism, and the lifting speed of the counterweight door is uniform and stable. Through the mechanical lock, the outer door body is effectively locked after the lift car leaves, so that personnel are prevented from entering, and the safety performance is greatly improved.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an enlarged schematic view of a point a in fig. 1.

Fig. 3 is an enlarged schematic view of fig. 1 at B.

FIG. 4 is a schematic view of the electric push rod and the anti-falling hanging rod of the invention.

FIG. 5 is a perspective view of an eccentric wheel mechanism according to the present invention.

FIG. 6 is a second perspective view of the eccentric mechanism of the present invention.

Fig. 7 is a third perspective view of the eccentric mechanism of the present invention.

FIG. 8 is a fourth perspective view of the eccentric mechanism of the present invention.

Fig. 9 is a schematic view of the drive rack of the present invention.

Fig. 10 is a second perspective view of the present invention.

Fig. 11 is a third perspective view of the present invention.

Fig. 12 is a schematic view of the car of the present invention.

FIG. 13 is a schematic view of a counterbalanced door of the present invention.

Fig. 14 is an enlarged schematic view at C in fig. 10.

Fig. 15 is an enlarged schematic view of fig. 12 at D.

Fig. 16 is an enlarged schematic view at E in fig. 12.

Fig. 17 is an enlarged schematic view at F in fig. 13.

FIG. 18 is a fourth perspective view of the present invention.

Fig. 19 is an enlarged schematic view at G in fig. 18.

In the figure: 1. a main body frame; 2. a car; 3. installing a base; 4. the anti-falling hanging rod; 5. an electric push rod; 6. a brake pipe; 7. an eccentric wheel mechanism; 71. a base plate; 72. a guide wheel group; 73. an eccentric wheel; 74. an arc-shaped transmission gear; 75. a transmission gear; 76. a movable slotted hole; 77. connecting the main shaft; 78. a driving rack; 79. a mounting base; 710. a groove is cut out in a way; 711. teeth are clenched; 8. fixing the ear plate; 9. a guide sleeve; 10. a travel switch assembly sensing rod; 11. a travel switch assembly; 111. a supporting seat; 112. mounting a platform; 113. a first travel switch; 114. a first rocker arm; 115. a second travel switch; 116. a second rocker arm; 12. a circular ring; 13. a buffer column; 14. a buffer sleeve; 15. a buffer spring; 16. adjusting the bolt; 17. a waist-shaped groove; 18. a set screw; 19. a spring pressing seat is pressed down; 20. compressing the spring; 21. an upper pressure spring seat; 103. a lifting mechanism; 104. a top anti-falling mechanism; 105. an inner gantry; 106. a counterweight door; 107. a drive mechanism; 108. an outer gantry; 109. an outer door body; 110. an electric mortise lock; 1031. an oil cylinder; 1032. a cylinder cross beam; 1033. a guide pulley; 1034. a guide slide rail; 1035. a lifting sprocket; 1036. hanging a chain; 1037. a chain connecting seat; 1071. a bearing seat; 1072. a bearing; 1073. a hoisting shaft; 1074. a first drive sprocket; 1075. a second drive sprocket; 1076. a drive motor; 1077. a drive sprocket; 1078. a connecting seat; 111. a mechanical lock; 1111. locking; 1112. a base; 1113. a latch hook; 1114. a guide wheel mechanism; 1115. driving a deflector rod; 1116. a hauling rope; 1117. a drive head; 1118. extruding the guide block; 1001. a frame body; 1002. i-shaped channel steel; 1003. a wheel carrier; 1004. a large guide wheel; 1005. a small guide wheel; 200. an anti-falling device.

Detailed Description

The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1-19, a lifting device with high safety performance comprises a main body frame 1, a car 2 is arranged in the main body frame 1, lifting mechanisms 103 capable of driving the car 2 to move up and down are symmetrically arranged on two sides of the main body frame 1, top anti-falling mechanisms 104 are respectively arranged on two sides of the top of the car 2, a brake pipe 6 is arranged on the main body frame 1, an eccentric wheel mechanism 7 is arranged on the brake pipe 6, the eccentric wheel mechanism 7 is fixedly arranged on the car 2, an inner door frame 105 is arranged at an inlet and an outlet of the car 2, a counterweight door 106 is slidably arranged in the inner door frame 105, a driving mechanism 107 capable of driving the counterweight door 106 to lift is arranged on the inner door frame 105, an outer door frame 108 is arranged at the inlet of the main body frame 1, outer door bodies 109 are respectively arranged on two sides of the outer door frame 1, an electric plug 110 is arranged between the outer door frame 108 and the outer door bodies 109, and the electric plug 110 is connected with a control switch.

The invention has simple structure, convenient use and high safety performance.

The top anti-falling mechanism 104 comprises a mounting base 3 arranged on the top of a lift car 2, an anti-falling hanging rod 4 is movably arranged at the front part of the mounting base 3, an electric push rod 5 capable of driving the anti-falling hanging rod 4 to extend out and lap-joint on a main body frame 1 is arranged at the rear part of the mounting base 3, and the movable end of the electric push rod 5 is connected with the rear end of the anti-falling hanging rod 4.

When the lift car reaches a preset position, the electric push rod drives the anti-falling hanging rod to extend out and overlap or bear on the main body frame, so that the lift car is prevented from moving downwards after stopping, and the lift car is effectively prevented from falling. When the lift car needs to move downwards, the lift car is driven to firstly move upwards for a short distance, so that the anti-falling hanging rod is convenient to contract and separate from the main body frame. When the anti-falling hanging rod is separated from the main body frame, the car can be driven to move downwards. When the car needs to move downwards, the car can be directly driven to move upwards, and meanwhile, the electric push rod is driven to pull the anti-falling hanging rod inwards, so that the anti-falling hanging rod is separated from the main body frame.

The front part of the installation base 3 is fixedly provided with a guide sleeve 9 through a fixed lug plate 8, the anti-falling hanging rod 4 is movably arranged in the guide sleeve 9, a travel switch assembly induction rod 10 is arranged at the joint of the anti-falling hanging rod 4 and an electric push rod 5, the installation base 3 is provided with a travel switch assembly 11, the travel switch assembly 11 is connected with the electric push rod 5, the travel switch assembly 11 comprises a support seat 111 arranged on the installation base 3, an installation platform 112 is arranged between the support seat 111 and the fixed lug plate 8, one side of the front end of the installation platform 112 is provided with a first travel switch 113, the outer side of the first travel switch 113 is provided with a first rocker 114 matched with the travel switch assembly induction rod 10, one side of the rear end of the installation platform 112 is provided with a second travel switch 115, the outer side of the second travel switch 115 is provided with a second rocker 116 matched with the travel switch assembly induction rod 10, and the first travel switch 113 and the second travel switch 115 are respectively connected with the electric push rod 5.

The guide sleeve can be firmly fixed on the top of the car through the fixing lug plate, so that the anti-falling hanging rod can move more stably, the overall strength of the anti-falling hanging rod is effectively improved, and the anti-falling hanging rod is effectively prevented from being bent or broken.

In the invention, when the electric push rod drives the anti-falling hanging rod to move towards one side of the main body frame, and when the induction rod of the travel switch assembly touches the first rocker arm, the first travel switch controls the electric push rod to stop moving; when the electric push rod drives the anti-falling hanging rod to move towards the inner side of the lift car, and when the induction rod of the travel switch assembly touches the second rocker arm, the second travel switch controls the electric push rod to stop moving.

The eccentric wheel mechanism 7 comprises a bottom plate 71, guide wheel sets 72 capable of movably clamping a brake pipe 6 are arranged on the front end face of the bottom plate 71 at intervals along the vertical direction, two eccentric wheels 73 are arranged on the front end face of the bottom plate 71 between the two guide wheel sets 72 at intervals on the left and right, arc-shaped transmission teeth 74 are arranged at the rear end of the eccentric wheels 73, transmission gears 75 meshed with the arc-shaped transmission teeth 74 are arranged on the front end face of the bottom plate 71, movable slotted holes 76 are arranged on the front end face of the bottom plate 71 between the eccentric wheels 73, a connecting main shaft 77 is arranged in the movable slotted holes 76, a driving rack 78 is arranged at the front end of the connecting main shaft 77, the driving rack 78 is respectively meshed with the transmission gears 75 on the two sides, the rear end of the connecting main shaft 77 is fixedly arranged on the bottom of a lift car 2 through a mounting seat 79, yielding slots 710 are arranged on opposite side walls of the eccentric wheels 73, the brake pipe 6 is arranged between the two yielding slots 710, and a plurality of clenching teeth 711 are arranged on the outer wall of the outer wall 73 on the lower side of the yielding slots 710 at intervals.

When the lift car normally moves upwards, the guide wheel set and the eccentric wheel can be driven by the driving lower bottom plate connected with the main shaft to smoothly move, and when the lift car normally moves downwards, the guide wheel set and the eccentric wheel can be driven by the lower bottom plate to smoothly move under the action of the weight. When the lift car falls in the twinkling of an eye, the falling speed of the connecting main shaft is greater than the falling speed of the guide wheel set and the eccentric wheel, at the moment, the connecting main shaft drives the driving rack to move downwards quickly, the driving transmission gear rotates to drive the arc-shaped transmission gear, the eccentric wheel is driven to rotate, the eccentric wheel rotates to enable the far end away from the rotating shaft to rotate towards the brake pipe, and therefore the brake pipe is bitten to effectively prevent the lift car from falling, and potential safety hazards are reduced.

The lifting mechanism 103 of the invention comprises an oil cylinder 1031 arranged in the side wall of the main body frame 1, an oil cylinder beam 1032 is arranged at the movable end of the oil cylinder 1031, guide pulleys 1033 are respectively arranged at the two ends of the oil cylinder beam 1032, a guide slide rail 1034 is arranged at the position of the main body frame 1 corresponding to the guide pulleys 1033, the guide pulleys 1033 are arranged in the guide slide rail 1034, lifting chain wheels 1035 are respectively arranged at the two sides of the upper end face of the oil cylinder beam 1032, chain hangers 1036 are arranged on the side wall of the lower end of the car 2, a chain connecting seat 1037 is arranged on the side wall of the middle part of the main body frame 1, one end of the lifting chain is fixedly connected to the chain hangers 1036, the other end of the lifting chain is fixedly connected to the chain connecting seat 1037, and the lifting chain is wound on the lifting chain wheels 1035.

The driving mechanism 107 comprises a bearing seat 1071 arranged at the upper end of an inner gantry 105 at intervals, a bearing 1072 is arranged on the bearing seat 1071, a hoisting shaft 1073 is arranged in the bearing 1072, first transmission chain wheels 1074 are respectively arranged at two ends of the hoisting shaft 1073, a second transmission chain wheel 1075 is arranged in the middle of the bearing 1072, a driving motor 1076 is arranged on the inner gantry 105, a driving chain wheel 1077 is arranged on a motor shaft of the driving motor 1076, a driving chain is arranged between the driving chain wheel 1077 and the second transmission chain wheel 1075, connecting seats 1078 are respectively arranged at two sides of the counterweight door 106, the connecting seats 1078 are connected with one end of the transmission chain, the other end of the transmission chain is connected with a counterweight block, and the transmission chain is wound on the first transmission chain wheel 1074.

In the invention, an upper travel switch 201 is arranged on the lower side of the upper end of the inner gantry, a lower travel switch 90 is arranged on one side of the lower end of the car, and the upper travel switch and the lower travel switch are respectively connected with the driving motor.

When the counterweight door rises to the upper travel switch, the upper travel switch is triggered, the driving motor stops moving, and at the moment, the counterweight door is opened. When the counterweight door descends to the lower travel switch, the upper travel switch and the lower travel switch are triggered, the driving motor stops moving, and at the moment, the counterweight door is closed.

When the elevator car needs to enter the elevator car, a user needs to firstly press the control button on the control switch to control the electric mortise lock to be opened, and after the outer door body needs to be pulled open, the user controls the driving mechanism to work to pull up the counterweight door, so that the counterweight door can safely enter the elevator car. When the lift car needs to be controlled to ascend or descend, the driving mechanism needs to be controlled to work to descend the counterweight door, the two outer door bodies are closed, the electric mortise lock is controlled to be locked through the control switch, and finally the ascending or descending button on the control switch is pressed, so that the lift car can move, and safety capacity is greatly improved.

According to the invention, the weight of the counterweight door can be balanced through the counterweight block, and the transmission chain can be effectively straightened, so that the stability of the counterweight door in the moving process is ensured. According to the invention, the balancing weight is arranged in the inner gantry. Can prevent effectively that the balancing weight from taking place to rock at the removal process, guarantee balancing weight rectilinear movement from top to bottom.

According to the invention, a mechanical lock 111 is arranged between the outer door body 109 and a main body frame of a lifting device, the mechanical lock 111 comprises a latch 1111 arranged on the lower part of the inner side surface of the outer door body 109, a base 1112 is arranged on an outer door frame 108 on one side of the latch 1111, a latch hook 1113 is hinged on the base 1112 close to the front side of the latch 1111, a guide wheel mechanism 1114 is arranged on the rear side of the base 1112, a driving shift lever 1115 is hinged on the left side of the base 1112, a traction rope 1116 is arranged at the upper end of the driving shift lever 1115, the traction rope 1116 bypasses the guide wheel mechanism 1114 and then is connected with the inner side of the latch hook 1113, a driving head 1117 is arranged at the lower end of the driving shift lever 1115, a return spring is arranged between the base 1112 and the upper part of the driving shift lever 1115, and an extrusion guide block 1118 matched with the driving head 1117 is arranged on the side wall of the lower end of the car.

When elevating gear's car removed access & exit department, the drive head can be set up at the car lower extreme with the extrusion guide block extrusion on one side to order about drive driving lever lower extreme backward side and remove, because the drive driving lever middle part articulates on the base, estimate drive driving lever upper portion and remove forward, drag the haulage rope, the haulage rope moves around guide wheel mechanism, thereby orders about the latch hook and overturns to the rear, this moment, latch hook and hasp alternate segregation, thereby automatic unblock. On the contrary, when the car left the access point, the extrusion force was lost to the drive head, under the effect of latch hook self gravity or external force, in latch hook front end card goes into the hasp to the outer door body of automatic locking effectively prevents the car at the removal process, and outer door body is opened, thereby takes place accident.

The main body frame 1 comprises frame bodies 1001 which are arranged in a bilateral symmetry mode, the frame bodies 1001 comprise I-shaped channel steel 1002 which are arranged at intervals in the front-back mode, wheel frames 1003 are arranged at positions, corresponding to the I-shaped channel steel 1002, of the lift car 2, large guide wheels 1004 are arranged on the inner sides of the wheel frames 1003, the inner side faces of the I-shaped channel steel 1002 abut against the large guide wheels 1004, small guide wheels 1005 are symmetrically arranged on the outer sides of the wheel frames 1003 at intervals in the front-back mode, and the small guide wheels 1005 abut against the inner walls of the I-shaped channel steel 1002.

The invention is provided with a falling prevention device 200 between the outer wall of the cage 2 and the main body frame 1.

According to the invention, a plurality of shock absorption columns are uniformly distributed at the lower end of the car 2.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high security performance's elevating gear, including main body frame (1) be equipped with car (2) in main body frame (1) bilateral symmetry is provided with and orders about car (2) lifting mechanism (103) that reciprocate, its characterized in that: be equipped with the top on car (2) top both sides respectively and prevent weighing down mechanism (104) be equipped with brake pipe (6) on main body frame (1) be equipped with eccentric wheel mechanism (7) on brake pipe (6), eccentric wheel mechanism (7) are fixed to be set up on car (2) the entrance and exit department of car (2) is equipped with interior portal (105) it is provided with counter weight door (106) to slide in interior portal (105) be equipped with on interior portal (105) can drive actuating mechanism (107) that counter weight door (106) go up and down are provided with outer portal (108) in main body frame (1) entrance department be equipped with outer door body (109) on outer portal (1) both sides respectively be equipped with electric mortiser lock (110) between outer portal (108) and outer door body (109), electric mortiser lock (110) are connected with control switch.

2. The high-safety lifting device as claimed in claim 1, wherein the top anti-falling mechanism (104) comprises a mounting base (3) disposed on the top of the car (2), an anti-falling hanging rod (4) is movably disposed at the front of the mounting base (3), an electric push rod (5) capable of driving the anti-falling hanging rod (4) to extend out and overlap on the main frame (1) is disposed at the rear of the mounting base (3), and the movable end of the electric push rod (5) is connected with the rear end of the anti-falling hanging rod (4).

3. A high safety lift system as recited in claim 2, wherein: installation base (3) front portion is provided with uide bushing (9) through fixed otic placode (8) is fixed, prevent weighing down peg (4) activity and set up in uide bushing (9) prevent weighing down peg (4) and electric putter (5) junction and be equipped with travel switch subassembly response pole (10) be equipped with travel switch subassembly (11) on installation base (3), travel switch subassembly (11) are connected with electric putter (5), travel switch subassembly (11) are including setting up supporting seat (111) on installation base (3) be equipped with mounting platform (112) between supporting seat (111) and fixed otic placode (8) be equipped with first travel switch (113) on mounting platform (112) front end one side be equipped with on the first travel switch (113) outside be equipped with first rocking arm (114) of travel switch subassembly response pole (10) matched with be equipped with second travel switch (115) on mounting platform (112) rear end one side be equipped with the second travel switch (115) outside with travel switch subassembly response pole (10) matched with second travel switch (115) and electric putter (113) are connected respectively.

4. A high safety lifting device as claimed in claim 1, wherein: eccentric wheel mechanism (7) include bottom plate (71) be provided with the centre gripping of can moving about along upper and lower direction interval on the terminal surface before bottom plate (71) the guide pulley group (72) of brake pipe (6), be provided with two eccentric wheels (73) at the interval about on bottom plate (71) between two guide pulley groups (72) preceding terminal surface be equipped with arc driving gear (74) on eccentric wheel (73) rear end, be equipped with on bottom plate (71) preceding terminal surface with transmission gear (75) that arc driving gear (74) engaged with be equipped with movable slotted hole (76) on bottom plate (71) preceding terminal surface between eccentric wheel (73 be equipped with in activity slotted hole (76) and connect main shaft (77) front end be provided with drive rack (78) connecting main shaft (77), drive rack (78) mesh with transmission gear (75) of both sides respectively, connect main shaft (77) rear end through mount pad (79) fixed the setting on car (2) bottom, be equipped with on eccentric wheel (73) the lateral wall that faces each other and let off the position groove (710), let off pipe (6) be located between two brake pipe (710) and let off the position groove (710) the interval on the tooth (710) the tooth of a plurality of eccentric wheel (710) downside.

5. A high safety lifting device as claimed in claim 1, wherein: lifting mechanism (103) are including setting up hydro-cylinder (1031) in main body frame (1) lateral wall be equipped with hydro-cylinder crossbeam (1032) on the expansion end of hydro-cylinder (1031) be equipped with guide pulley (1033) on hydro-cylinder crossbeam (1032) both ends respectively main body frame (1) is equipped with direction slide rail (1034) with the corresponding position of guide pulley (1033), guide pulley (1033) set up in direction slide rail (1034) be equipped with lifting sprocket (1035) on hydro-cylinder crossbeam (1032) up end both sides respectively be equipped with chain hangers (1036) on car (2) lower extreme lateral wall be equipped with chain connecting seat (1037) on main body frame (1) middle part lateral wall, the one end fixed connection of lifting chain is on chain hangers (1036), the other end fixed connection of lifting chain is on chain connecting seat (1037), the lifting chain is around establishing on lifting sprocket (1035).

6. A high safety lift system as recited in claim 1, wherein: the driving mechanism (107) comprises a bearing seat (1071) arranged at the upper end of an inner portal (105) at intervals, a bearing (1072) is arranged on the bearing seat (1071), a hoisting shaft (1073) is arranged in the bearing (1072), first transmission chain wheels (1074) are respectively arranged at two ends of the hoisting shaft (1073), a second transmission chain wheel (1075) is arranged in the middle of the bearing (1072), a driving motor (1076) is arranged on the inner portal (105), a driving chain wheel (1077) is arranged on a motor shaft of the driving motor (1076), a driving chain is arranged between the driving chain wheel (1077) and the second transmission chain wheel (1075), connecting seats (1078) are respectively arranged on two sides of the counterweight door (106), the connecting seats (1078) are connected with one end of the transmission chain, the other end of the transmission chain is connected with the counterweight block, and the transmission chain is wound on the first transmission chain wheel (1074).

7. A high safety lift system as recited in claim 1, wherein: be equipped with mechanical lock (111) between outer door body (109) and elevating gear's the main body frame, mechanical lock (111) including installing hasp (1111) on outer door body (109) medial surface lower part be equipped with base (1112) on outer portal (108) of hasp (1111) one side base (1112) are close to hasp (1111) front side and are articulated to have latch hook (1113) be equipped with guide wheel mechanism (1114) on base (1112) rear side, and it has drive driving lever (1115) to articulate on base (1112) left side, is equipped with haulage rope (1116) on drive driving lever (1115), be connected with latch hook (1113) inboard behind guide wheel mechanism (1114) haulage rope (1116) are equipped with driving head (1117) on drive driving lever (1115) lower extreme be equipped with reset spring between base (1112) and the drive driving lever (1115) upper portion be equipped with on the car lower extreme lateral wall with driving head (1117) matched with extrusion guide block (1118).

8. A high safety lift system as recited in claim 1, wherein: main body frame (1) is including the frame body (1001) that bilateral symmetry set up, frame body (1001) is including I-shaped channel steel (1002) that the interval set up around car (2) are equipped with wheel carrier (1003) with the corresponding position of I-shaped channel steel (1002) wheel carrier (1003) inboard is equipped with big guide pulley (1004), the medial surface of I-shaped channel steel (1002) supports and leans on big guide pulley (1004) interval symmetry is provided with little guide pulley (1005) around wheel carrier (1003) outside, little guide pulley (1005) support and lean on I-shaped channel steel (1002) inner wall.

9. A high safety lift system as recited in claim 1, wherein: an anti-falling device (200) is arranged between the outer wall of the cage (2) and the main body frame (1).

10. A high safety lift system as recited in claim 1, wherein: a plurality of shock absorption columns are uniformly distributed at the lower end of the lift car (2).