CN111675142A

CN111675142A - Loading and unloading elevator capable of automatically locking overweight

Info

Publication number: CN111675142A
Application number: CN202010218807.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Shaoxing Huangge Intelligent Technology Co ltd
Current assignee: Shaoxing Huangge Intelligent Technology Co ltd
Priority date: 2020-01-19
Filing date: 2020-03-25
Publication date: 2020-09-18

Abstract

The invention discloses an overweight automatic locking loading and unloading elevator, which comprises a base, wherein the upper end surface of the base is provided with a first sliding block cavity with an upward opening, a first sliding block is arranged in the first sliding block cavity and can slide up and down, a first spring is fixedly connected between the first sliding block and the inner wall of the first sliding block cavity, the lifting device is arranged above the base, the locking device is arranged above the base, and the unlocking reset device is arranged in the locking device, the invention has simple structure, when the material is lifted, the lifting device is automatically locked under the condition of overweight, thereby avoiding the possibility of accidents in the lifting operation under the condition of overweight, and the locking can be automatically released after the overweight part is taken down, so that the locking device is reset, the judgment and the locking of the next overweight state are not influenced, and the safety and the reliability of the material lifting operation are obviously improved.

Description

Loading and unloading elevator capable of automatically locking overweight

Technical Field

The invention relates to the technical field of material lifting equipment, in particular to an overweight automatic locking feeding and discharging elevator.

Background

Due to the development of transportation, storage and the like, lifting and conveying materials become one of indispensable conveying modes in many industries, the conveying efficiency can be remarkably improved, and space can be effectively and reasonably utilized to stack more materials, however, the lifting operation of the materials has great danger, especially in many cases, an operator cannot accurately control the weight of the materials lifted at a single time, or the operation is overweight and illegal for faster completion, so that serious safety accidents are easily caused, equipment damage is caused, the operation efficiency is influenced, and the personal safety of the personnel is threatened. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows:

the lifting operation of materials has great danger, and under many circumstances, an operator cannot accurately control the weight of the materials lifted at a time, or the materials are overweight and illegal to finish more quickly, so that major safety accidents are easily caused, equipment is damaged, the operation efficiency is influenced, and the personal safety of the operator is endangered by extension.

In order to solve the problems, the embodiment designs an overweight automatic locking feeding and discharging elevator, which comprises a base, wherein the upper end surface of the base is provided with a first slide block cavity with an upward opening, a first slide block is arranged in the first slide block cavity in a vertically sliding manner, a first spring is fixedly connected between the first slide block and the inner wall of the first slide block cavity, a lifting device is arranged above the base and comprises a lifting box fixedly arranged at the upper end of the first slide block extending to the outside, a lifting table is arranged above the lifting box, the lower end surface of the lifting table is provided with a first telescopic cavity with a downward opening, the upper end surface of the lifting box is provided with a second telescopic cavity with an upward opening corresponding to the first telescopic cavity, hinge telescopic rods are arranged in the first telescopic cavity and the second telescopic cavity, and a locking device is arranged above the base, the locking device comprises a locking cavity arranged in the lower wall of the second telescopic cavity, the left wall of the locking cavity is communicated with a power cavity, a motor is fixedly arranged in the left wall of the power cavity, the right end of the motor is in power connection with a rotary disc, the right end face of the rotary disc is provided with a gear groove with a right opening, a first rotating shaft with a left end extending into the gear groove is rotatably arranged in the right wall of the locking cavity, a first gear capable of being meshed with the gear groove is arranged on the left side of the fixed block in a left-right sliding manner on the first rotating shaft, an unlocking reset device is arranged in the locking device and comprises an inserting rod fixedly arranged on the upper end face of the base, a third tooth groove is arranged on the left end face of the inserting rod, an inserting groove with a downward opening is arranged on the lower end face of the lifting box and above the inserting rod, the left wall of the inserting groove is communicated with a second gear cavity, and a third rotating shaft is rotatably, and a third gear which can be meshed with the third tooth groove is fixedly arranged on the third rotating shaft. Preferably, the lifting device comprises a limiting groove which is symmetrical in front and back and is communicated with the front wall and the back wall of the first telescopic cavity, a limiting rod which is arranged in the first telescopic cavity in a left-right sliding mode and extends from the front end to the back end into the limiting groove is arranged in the first telescopic cavity, a second sliding block cavity is communicated with the lower wall of the second telescopic cavity below the limiting groove, a screw rod is rotatably arranged between the left wall and the right wall of the second sliding block cavity on the left side of the first rotating shaft, the right end of the first rotating shaft extends into the second sliding block cavity and is fixedly connected with the left end of the screw rod, a second sliding block which is connected with the screw rod in a threaded mode is arranged in the second sliding block cavity in a left-right sliding mode, a connecting block of which the upper end extends into the second telescopic cavity is fixedly arranged on the upper end face of the second sliding block, the left side of the upper end of the hinge telescopic rod is rotatably connected between, the left side of the lower end of the hinge telescopic rod is rotatably connected between the front wall and the rear wall of the second telescopic cavity, and the right side of the lower end of the hinge telescopic rod is rotatably connected to the upper end of the connecting block.

Preferably, the locking device is including fixed locating in the first pivot and in the fixed block on first gear right side, the fixed block with fixedly connected with second spring between the first gear, first pivot up end is equipped with the ascending keyway of opening, but the horizontal slip in the keyway be equipped with fixed connection in the key of first gear, the fixed internal gear that is equipped with in locking chamber circumference inner wall left side can mesh in first gear.

Preferably, the right wall of the locking cavity is communicated with and provided with a push rod cavity below the fixing block, a push rod is arranged in the push rod cavity in a left-right sliding mode, the left end of the push rod extends out of the push rod cavity and is provided with a roller groove with a left opening, a roller with a left end extending out of the roller groove is rotatably arranged between the upper wall and the lower wall of the roller groove, and a first tooth groove with a downward opening is formed in the lower end face of the push rod.

Preferably, the unlocking reset device comprises a third slider cavity which is communicated with the left side of the lower wall of the push rod cavity, a third slider is arranged in the third slider cavity in a vertically sliding manner, a third spring is fixedly connected between the third slider and the inner wall of the third slider cavity, a first gear cavity with an upward opening is arranged on the upper end face of the third slider, a second rotating shaft is rotatably arranged in the front wall of the first gear cavity, a second gear with an upper end extending to the outside is fixedly arranged on the second rotating shaft, and the second gear can be meshed with the first tooth groove.

Preferably, a first abutting groove with a right opening is formed in the lower side of the right end face of the third sliding block, a first sliding rod cavity is communicated with the right side of the lower wall of the push rod cavity, a first sliding rod is arranged in the first sliding rod cavity in a vertically sliding mode, the upper end of the first sliding rod can extend into the push rod cavity, a second abutting groove with a left opening is formed in the lower side of the left end face of the first sliding rod, a abutting rod cavity is communicated with the third sliding block cavity and the first sliding rod cavity, an abutting rod is arranged in the abutting rod cavity in a horizontally sliding mode, the left end of the abutting rod can extend into the first abutting groove, and the right end of the abutting rod can extend into the second abutting groove.

Preferably, a first clamping block cavity with a right opening is arranged on the upper side of the right end face of the third sliding block, a first clamping block is arranged in the first clamping block cavity and can slide left and right, a fourth spring is fixedly connected between the first clamping block and the inner wall of the first clamping block cavity, a pushing block cavity is communicated with the right wall of the third sliding block cavity, when the third sliding block slides up to the first clamping block cavity and is aligned with the pushing block cavity, the right end of the first clamping block can extend into the pushing block cavity, a pushing block is arranged in the pushing block cavity and can slide left and right, a second sliding rod cavity is communicated between the pushing block cavity and the pushing rod cavity, a second sliding rod is arranged in the second sliding rod cavity and can slide up and down, a fifth spring is fixedly connected between the second sliding rod and the inner wall of the second sliding rod cavity, a third abutting groove with a left opening is arranged on the left end face of the second sliding rod, and the right end of the pushing block can extend into the third abutting groove, the lower end face of the push rod is provided with a second fixture block cavity with a downward opening, a second fixture block with a lower end capable of extending into the second slide rod cavity is arranged in the second fixture block cavity in a vertically sliding mode, and a sixth spring with elasticity larger than that of the fifth spring is fixedly connected between the second fixture block and the inner wall of the second fixture block cavity.

Preferably, a fourth slider cavity is arranged in the lifting box above the left side of the slot, a fourth slider is arranged in the fourth slider cavity in a left-right sliding manner, a seventh spring is fixedly connected between the fourth slider and the right wall of the fourth slider cavity, a pull wire is fixedly connected between the right end of the fourth slider and the right end of the push rod, a clamping groove with a downward opening and a rightward opening is arranged on the lower end surface of the fourth slider, a third clamping block cavity is communicated with the upper wall of the clamping groove, a third clamping block with a lower end capable of extending into the clamping groove is arranged in the third clamping block cavity in a vertical sliding manner, an eighth spring is fixedly connected between the third clamping block and the inner wall of the third clamping block cavity, a third slider cavity is communicated between the lower wall of the fourth slider cavity and the left wall of the second gear cavity, and a third slide rod with an upper end capable of extending into the clamping groove is arranged in the third slide rod cavity in a vertical sliding manner, and a second tooth groove is formed in the right end face of the third sliding rod, and the left end of the third gear is meshed with the second tooth groove.

Preferably, a transmission cavity is formed in the front wall of the third slider cavity and the front wall of the second gear cavity, a communication port is formed between the third slider cavity and the transmission cavity in a communicating mode, the front end of the second rotating shaft penetrates through the communication port to extend into the transmission cavity and is fixedly provided with a first belt wheel, the front end of the third rotating shaft extends into the transmission cavity and is fixedly provided with a second belt wheel, a transmission belt is wound between the first belt wheel and the second belt wheel, when the third slider is located at an upper limit position, the second belt wheel is meshed with the first tooth groove, and at the moment, the transmission belt is in a tensioned state.

The invention has the beneficial effects that: the invention has simple structure, automatically locks the lifting device when the overweight condition occurs during the lifting operation of the material, avoids the possibility of accidents during the lifting operation when the overweight condition occurs, and can automatically unlock after the overweight part is taken down, so that the locking device is reset, the judgment and the locking of the next overweight state are not influenced, and the safety and the reliability of the material lifting operation are obviously improved.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of the overall structure of an overweight auto-locking loading/unloading elevator according to the present invention;

FIG. 2 is an enlarged schematic view of "A" of FIG. 1;

FIG. 3 is a sectional view taken in the direction "B-B" of FIG. 2;

FIG. 4 is an enlarged schematic view of "C" of FIG. 2;

FIG. 5 is an enlarged schematic view of "D" of FIG. 2;

FIG. 6 is a cross-sectional view taken in the direction "E-E" of FIG. 4;

FIG. 7 is an enlarged schematic view of "F" of FIG. 4;

fig. 8 is a sectional view in the direction of "G-G" of fig. 6.

Detailed Description

The invention will now be described in detail with reference to fig. 1-8, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to an overweight automatic locking loading and unloading elevator, which is mainly applied to short-distance safe lifting and conveying of materials, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to an overweight automatic locking loading and unloading elevator, which comprises a base 11, wherein the upper end surface of the base 11 is provided with a first slide block cavity 12 with an upward opening, a first slide block 13 is arranged in the first slide block cavity 12 in a way of sliding up and down, a first spring 14 is fixedly connected between the first slide block 13 and the inner wall of the first slide block cavity 12, a lifting device 101 is arranged above the base 11, the lifting device 101 comprises a lifting box 15 fixedly arranged at the upper end of the first slide block 13 extending to the outside, a lifting table 16 is arranged above the lifting box 15, the lower end surface of the lifting table 16 is provided with a first telescopic cavity 17 with a downward opening, the upper end surface of the lifting box 15 is provided with a second telescopic cavity 18 with an upward opening corresponding to the first telescopic cavity 17, hinge telescopic rods 19 are arranged in the first telescopic cavity 17 and the second telescopic cavity 18, and a locking device 102 is arranged above the base 11, the locking device 102 comprises a locking cavity 26 arranged in the lower wall of the second telescopic cavity 18, the left wall of the locking cavity 26 is communicated with a power cavity 27, a motor 28 is fixedly arranged in the left wall of the power cavity 27, the right end of the motor 28 is in power connection with a rotary disc 29, a gear groove 30 with a right opening is arranged on the right end face of the rotary disc 29, a first rotary shaft 31 with a left end extending into the gear groove 30 is rotatably arranged in the right wall of the locking cavity 26, a first gear 33 capable of being meshed with the gear groove 30 is arranged on the first rotary shaft 31 and on the left side of the fixed block 32 in a left-right sliding manner, an unlocking reset device 103 is arranged in the locking device 102, the unlocking reset device 103 comprises an inserted rod 80 fixedly arranged on the upper end face of the base 11, a third toothed groove 81 is arranged on the left end face of the inserted rod 80, a slot 82 with a downward opening is arranged on the lower end face of the lifting box 15 and, a second gear cavity 83 is communicated with the left wall of the slot 82, a third rotating shaft 84 is rotatably arranged in the front wall of the second gear cavity 83, and a third gear 85 which can be meshed with the third tooth groove 81 is fixedly arranged on the third rotating shaft 84.

Beneficially, as will be described in detail below, the lifting device 101 includes a limiting groove 20 which is symmetrical in front and back and is communicated with the front wall and the back wall of the first telescopic cavity 17, a limiting rod 21 which is provided in the first telescopic cavity 17 and can slide left and right and has front and back ends extending into the limiting groove 20, a second slider cavity 22 is provided in the lower wall of the second telescopic cavity 18 and is communicated with the lower side of the limiting groove 20, a screw 23 is rotatably provided between the left wall and the right wall of the second slider cavity 22 and on the left side of the first rotating shaft 31, the right end of the first rotating shaft 31 extends into the second slider cavity 22 and is fixedly connected to the left end of the screw 23, a second slider 24 which is connected to the screw 23 by screw thread is provided in the second slider cavity 22 and can slide left and right, a connecting block 25 whose upper end extends into the second telescopic cavity 18 is fixedly provided on the upper end face of the second slider 24, the left side of the upper end of the hinge telescopic rod 19 is rotatably connected between the front wall and the rear wall of the first telescopic cavity 17, the right side of the upper end of the hinge telescopic rod 19 is rotatably connected on the limiting rod 21, the left side of the lower end of the hinge telescopic rod 19 is rotatably connected between the front wall and the rear wall of the second telescopic cavity 18, and the right side of the lower end of the hinge telescopic rod 19 is rotatably connected at the upper end of the connecting block 25.

Advantageously, as will be described in detail below, the locking device 102 includes a fixed block 32 fixedly disposed on the first rotating shaft 31 and on the right side of the first gear 33, a second spring 34 is fixedly connected between the fixed block 32 and the first gear 33, a key slot 35 with an upward opening is disposed on the upper end surface of the first rotating shaft 31, a key 36 fixedly connected to the first gear 33 is slidably disposed in the key slot 35 from side to side, and an internal gear 37 engageable with the first gear 33 is fixedly disposed on the left side of the circumferential inner wall of the locking cavity 26.

Advantageously, a push rod cavity 38 is formed in the right wall of the locking cavity 26 and communicated below the fixed block 32, a push rod 39 is arranged in the push rod cavity 38 in a left-right sliding manner, the left end of the push rod 39 extends out of the push rod cavity 38 and is provided with a roller groove 40 with a left opening, a roller 41 with a left end extending out of the roller groove 40 is rotatably arranged between the upper wall and the lower wall of the roller groove 40, and a first tooth groove 43 with a downward opening is formed in the lower end surface of the push rod 39.

Beneficially, the unlocking return device 103 is described in detail below, the unlocking return device 103 includes a third slider cavity 44 disposed on the left side of the lower wall of the push rod cavity 38 in a communicating manner, a third slider 45 is disposed in the third slider cavity 44 in a vertically slidable manner, a third spring 46 is fixedly connected between the third slider 45 and the inner wall of the third slider cavity 44, a first gear cavity 47 with an upward opening is disposed on an upper end surface of the third slider 45, a second rotating shaft 48 is rotatably disposed in the front wall of the first gear cavity 47, a second gear 49 with an upper end extending to the outside is fixedly disposed on the second rotating shaft 48, and the second gear 49 can be engaged with the first tooth slot 43.

Beneficially, a first abutting groove 50 with a right opening is arranged on the lower side of the right end face of the third slider 45, a first slider cavity 51 is communicated with the right side of the lower wall of the push rod cavity 38, a first slider 52 with an upper end capable of extending into the push rod cavity 38 is arranged in the first slider cavity 51 in a vertically slidable manner, a second abutting groove 53 with a left opening is arranged on the lower side of the left end face of the first slider 52, an abutting rod cavity 54 is communicated between the third slider cavity 44 and the first slider cavity 51, an abutting rod 55 is arranged in the abutting rod cavity 54 in a horizontally slidable manner, the left end of the abutting rod 55 is capable of extending into the first abutting groove 50, and the right end of the abutting rod 55 is capable of extending into the second abutting groove 53.

Beneficially, a first fixture block cavity 56 with a right opening is arranged on the upper side of the right end face of the third slider 45, a first fixture block 57 is arranged in the first fixture block cavity 56 and can slide left and right, a fourth spring 58 is fixedly connected between the first fixture block 57 and the inner wall of the first fixture block cavity 56, a push block cavity 59 is communicated with the right wall of the third slider cavity 44, when the third slider 45 slides up to the first fixture block cavity 56 and aligns with the push block cavity 59, the right end of the first fixture block 57 can extend into the push block cavity 59, a push block 60 is arranged in the push block cavity 59 and can slide left and right, a second slider cavity 61 is communicated between the push block cavity 59 and the push rod cavity 38, a second slider 62 is arranged in the second slider cavity 61 and can slide up and down, a fifth spring 63 is fixedly connected between the second slider 62 and the inner wall of the second slider cavity 61, a third abutting groove 65 with a left opening is arranged on the left end face of the second slider 62, the right end of the push block 60 can extend into the third abutting groove 65, a second block cavity 66 with a downward opening is formed in the lower end face of the push rod 39, a second block 67 with a lower end extending into the second slide rod cavity 61 is formed in the second block cavity 66 in a vertically sliding manner, and a sixth spring 68 with elasticity larger than that of the fifth spring 63 is fixedly connected between the second block 67 and the inner wall of the second block cavity 66.

Beneficially, a fourth slider cavity 69 is arranged in the lifting box 15 and above the left side of the slot 82, a fourth slider 70 is arranged in the fourth slider cavity 69 and can slide left and right, a seventh spring 71 is fixedly connected between the fourth slider 70 and the right wall of the fourth slider cavity 69, a pull wire 72 is fixedly connected between the right end of the fourth slider 70 and the right end of the push rod 39, a slot 73 with a downward opening and a rightward opening is arranged on the lower end surface of the fourth slider 70, a third block cavity 74 is communicated with the upper wall of the slot 73, a third block 75 with a lower end capable of extending into the slot 73 is arranged in the third block cavity 74 and can slide up and down, an eighth spring 76 is fixedly connected between the third block 75 and the inner wall of the third block cavity 74, a third slider cavity 77 is communicated between the lower wall of the fourth slider cavity 69 and the left wall of the second gear cavity 83, a third slide bar 78 with an upper end capable of extending into the clamping groove 73 is arranged in the third slide bar cavity 77 in a vertically sliding manner, a second gear groove 79 is arranged on the right end face of the third slide bar 78, and the left end of the third gear 85 is meshed with the second gear groove 79.

Beneficially, a transmission cavity 86 is provided in front walls of the third slider cavity 44 and the second gear cavity 83, a communication port 87 is provided in communication between the third slider cavity 44 and the transmission cavity 86, a front end of the second rotating shaft 48 extends into the transmission cavity 86 through the communication port 87 and is fixedly provided with a first pulley 88, a front end of the third rotating shaft 84 extends into the transmission cavity 86 and is fixedly provided with a second pulley 89, a transmission belt 90 is wound between the first pulley 88 and the second pulley 89, and when the third slider 45 is at the upper limit position, the second gear 49 is engaged with the first tooth groove 43, and the transmission belt 90 is in a tensioned state.

The following describes in detail the use steps of an overweight automatic locking loading and unloading elevator in the present document with reference to fig. 1 to 8:

at the beginning, the first slider 13 is at the upper limit position, the lower end surface of the lifting platform 16 abuts against the lifting box 15, the hinge telescopic rod 19 is in the contraction state, the second slider 24 is at the right limit position, the first gear 33 and the key 36 are at the left limit position, the first gear 33 and the gear groove 30 are in the engagement state, the second spring 34 is in the stretched state, the push rod 39 is at the left limit position, the third slider 45 is at the lower limit position, the upper end of the first slide rod 52 is in the 42, the right end of the abutting rod 55 abuts against the inclined surface of the second abutting groove 53, the first block 57 is received in the first block cavity 56, the fourth spring 58 is in the compressed state, the second slide rod 62 is at the lower limit position, the fifth spring 63 is in the compressed state, the lower end of the second block 67 extends into the second slide rod cavity 61 and abuts against the upper end of the second slide rod 62, the fourth slider 70 is at the right limit position, the seventh spring 71 is in the, the lower end of the third block 75 extends into the locking groove 73, and the upper end of the third slide bar 78 extends into the locking groove 73 and is located on the left side of the third block 75.

During normal use raising and lowering functions, place the material behind elevating platform 16 up end, motor 28 starts to drive carousel 29 and rotates, then carousel 29 drives first pivot 31 and screw rod 23 through first gear 33 and rotates, and then drives second slider 24 through threaded connection and slide left, then connecting block 25 slides left and drives hinge telescopic link 19 and extend, and then elevating platform 16 rises to carry the material to required position, then drive elevating platform 16 during the motor 28 reversal and descend to required position.

After the material is placed on the upper end surface of the lifting platform 16, the lifting box 15 and the lifting platform 16 are pressed down under the action of the gravity of the material, so that the first sliding block 13 slides down, if an overweight condition occurs, the third tooth space 81 slides up relative to the lifting box 15 and enters a meshing state with the third gear 85, the third gear 85 rotates and drives the third sliding rod 78 to slide down and be accommodated in the third sliding rod cavity 77, then the upper end of the third sliding rod 78 is separated from the clamping groove 73, the fourth sliding block 70 is ejected leftwards under the action of the seventh spring 71, the copper drum pulls the pull wire 72 to pull the push rod 39 rightwards when the fourth sliding block 70 slides leftwards, when the push rod 39 starts to slide rightwards, the inclined surface at the lower end of the second clamping block 67 abuts against the right wall of the second sliding rod cavity 61 and is pushed back into the second clamping block cavity 66, when the push rod 39 slides rightwards under the action of the pull wire 72 to the right limit position, the first gear 33 slides rightwards under the action of the second spring 34 and is, and the first rotation shaft 31 is locked against rotation.

When the push rod 39 slides to the right limit position, the right end of the push rod 39 abuts against the inclined surface at the upper end of the first slide rod 52 and pushes the first slide rod 52 back to the first slide rod cavity 51, then the first slide bar 52 slides downwards to push the abutting bar 55 to slide leftwards, the left end of the abutting bar 55 extends into the inner inclined plane of the first abutting groove 50 to abut against and push the third slide block 45 to slide upwards, when the third slide block 45 slides upwards to the upper limit position and the second gear 49 is engaged with the first tooth groove 43, the first block cavity 56 is aligned with the push block cavity 59, at this time, under the action of the fourth spring 58, the right end of the first block 57 extends into the push block cavity 59 and pushes the push block 60 to slide right, the third slide block 45 is clamped by the first block 57 to keep the state of the upper limit position, since the lower end of the second latch 67 is already separated from the second slide rod cavity 61, the second slide rod 62 slides up to the upper limit position under the action of the fifth spring 63, and therefore the pushing block 60 slides right to the right end and extends into the third abutting groove 65.

Because the third slider 45 is in a tightened state at the upper limit position, the transmission belt 90 is in a tightened state, when the unlocking is required from the locked state, only the overweight part needs to be taken down, the first slider 13 slides up under the action of the first spring 14, the inserted link 80 slides down relative to the lifting box 15 and drives the third gear 85 to rotate reversely, the third gear 85 drives the third slide bar 78 to slide up to the upper end to extend into the fourth slider cavity 69 when rotating reversely, the third gear 85 rotates reversely and drives the second belt wheel 89 to rotate, the second rotating shaft 48 is driven to rotate through belt transmission, then the second gear 49 rotates to drive the push rod 39 to slide left, when the third tooth groove 81 is disengaged from the third gear 85, the push rod 39 slides left to the left limit position, when sliding left, the first gear 33 is pushed to slide left to the left limit position, the first gear 33 is engaged with the gear groove 30, the second fixture cavity 66 is aligned with the second slide bar cavity 61, the lower end of the second fixture 67 extends into the second slide bar cavity 61 and pushes the second slide bar 62 to slide downwards under the action of the sixth spring 68, the pushing block 60 is pushed to slide left and push the first latch 57 back into the first latch cavity 56, and then the third slider 45 slides down under the action of the third spring 46 to return to the initial state, so that the second gear 49 is disengaged from the first tooth groove 43.

When the push rod 39 slides to the left, the pull wire 72 pulls the fourth slider 70 to slide to the right limit position, when the fourth slider 70 slides to the upper side of the third slide bar 78 to the right, the third latch 75 firstly abuts against the upper end of the third slide bar 78 and is pushed back into the third latch cavity 74, and when the fourth slider 70 slides to the right until the third slide bar cavity 77 is located at the left side of the third latch 75, the lower end of the third latch 75 extends into the latch cavity 73 again to latch the position of the fourth slider 70.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides an unloading lift on overweight automatic locking, includes the base, the base up end is equipped with the ascending first slider chamber of opening, the gliding first slider that is equipped with from top to bottom in the first slider chamber, first slider with the first spring of fixedly connected with between the first slider intracavity wall, the base top is equipped with elevating gear, its characterized in that: the lifting device comprises a lifting box fixedly arranged at the upper end of the first sliding block extending to the outside, a lifting platform is arranged above the lifting box, a first telescopic cavity with a downward opening is arranged on the lower end face of the lifting platform, a second telescopic cavity with an upward opening is arranged on the upper end face of the lifting box corresponding to the first telescopic cavity, hinge telescopic rods are arranged in the first telescopic cavity and the second telescopic cavity, a locking device is arranged above the base and comprises a locking cavity arranged in the lower wall of the second telescopic cavity, the left wall of the locking cavity is communicated with a power cavity, a motor is fixedly arranged in the left wall of the power cavity, the right end of the motor is in power connection with a turntable, a gear groove with a rightward opening is arranged on the right end face of the turntable, a first rotating shaft with a left end extending to the gear groove is rotatably arranged in the right wall of the locking cavity, and a first gear capable of being meshed with the gear groove is arranged on the left side and on the left side of the fixing block in a sliding mode, be equipped with unblock resetting means in the locking device, unblock resetting means locates including fixed the inserted bar of base up end, the inserted bar left end face is equipped with the third tooth's socket, under the cage terminal surface just in the inserted bar top is equipped with the decurrent slot of opening, slot left side wall intercommunication is equipped with the second gear chamber, rotatable third pivot that is equipped with in the second gear chamber antetheca, fixed being equipped with in the third pivot can mesh in the third gear of third tooth's socket.

2. The loading and unloading elevator with automatic overweight locking according to claim 1, characterized in that: the lifting device comprises limiting grooves which are symmetrical front and back and are communicated with the front wall and the back wall of the first telescopic cavity, a limiting rod which is arranged in the first telescopic cavity in a left-right sliding mode and extends from the front end to the back end of the first telescopic cavity, a second sliding block cavity is communicated with the lower wall of the second telescopic cavity below the limiting groove, a screw rod is rotatably arranged between the left wall and the right wall of the second sliding block cavity on the left side of the first rotating shaft, the right end of the first rotating shaft extends into the second sliding block cavity and is fixedly connected with the left end of the screw rod, a second sliding block which is connected with the screw rod in a threaded mode is arranged in the second sliding block cavity in a left-right sliding mode, a connecting block of which the upper end extends into the second telescopic cavity is fixedly arranged on the upper end face of the second sliding block, the left side of the upper end of the hinge telescopic rod is rotatably connected between the front wall and the back, the left side of the lower end of the hinge telescopic rod is rotatably connected between the front wall and the rear wall of the second telescopic cavity, and the right side of the lower end of the hinge telescopic rod is rotatably connected to the upper end of the connecting block.

3. The loading and unloading elevator with automatic overweight locking according to claim 1, characterized in that: locking device locates including fixed in the first pivot and in the fixed block on first gear right side, the fixed block with fixedly connected with second spring between the first gear, first pivot up end is equipped with the ascending keyway of opening, but the horizontal slip be equipped with fixed connection in the keyway the key of first gear, fixed being equipped with in locking chamber circumference inner wall left side can mesh in the internal gear of first gear.

4. The loading and unloading elevator with automatic overweight locking according to claim 1, characterized in that: the locking chamber right wall just in fixed block below intercommunication is equipped with the push rod chamber, but the push rod intracavity horizontal slip be equipped with the push rod, the push rod left end stretches out the push rod chamber just is equipped with the gyro wheel groove of opening left, rotatable being equipped with the left end between the gyro wheel groove upper and lower wall stretches out the gyro wheel in gyro wheel groove, the terminal surface is equipped with the first tooth's socket that the opening is decurrent under the push rod.

5. The loading and unloading elevator with automatic overweight locking according to claim 4, characterized in that: the unlocking reset device comprises a third slider cavity which is communicated with the left side of the lower wall of the push rod cavity, a third slider is arranged in the third slider cavity in a vertically sliding mode, a third spring is fixedly connected between the third slider and the inner wall of the third slider cavity, a first gear cavity with an upward opening is formed in the upper end face of the third slider, a second rotating shaft is rotatably arranged in the front wall of the first gear cavity, a second gear with the upper end extending to the outside is fixedly arranged on the second rotating shaft, and the second gear can be meshed with the first tooth groove.

6. The loading and unloading elevator with automatic overweight locking according to claim 5, characterized in that: the left end of the support rod can extend into the first support groove, and the right end of the support rod can extend into the second support groove.

7. The loading and unloading elevator with automatic overweight locking according to claim 5, characterized in that: a first clamping block cavity with a right opening is formed in the upper side of the right end face of the third sliding block, a first clamping block is arranged in the first clamping block cavity and can slide left and right, a fourth spring is fixedly connected between the first clamping block and the inner wall of the first clamping block cavity, a pushing block cavity is communicated with the right wall of the third sliding block cavity, when the third sliding block slides up to the first clamping block cavity and is aligned with the pushing block cavity, the right end of the first clamping block can extend into the pushing block cavity, a pushing block is arranged in the pushing block cavity and can slide left and right, a second sliding rod cavity is communicated between the pushing block cavity and the pushing rod cavity, a second sliding rod is arranged in the second sliding rod cavity and can slide up and down, a fifth spring is fixedly connected between the second sliding rod and the inner wall of the second sliding rod cavity, a third abutting groove with a left opening is formed in the left end face of the second sliding rod, and the right end of the pushing block can extend into the third abutting groove, the lower end face of the push rod is provided with a second fixture block cavity with a downward opening, a second fixture block with a lower end capable of extending into the second slide rod cavity is arranged in the second fixture block cavity in a vertically sliding mode, and a sixth spring with elasticity larger than that of the fifth spring is fixedly connected between the second fixture block and the inner wall of the second fixture block cavity.

8. The loading and unloading elevator with automatic overweight locking according to claim 1, characterized in that: a fourth slider cavity is arranged in the lifting box and above the left side of the slot, a fourth slider is arranged in the fourth slider cavity in a left-right sliding manner, a seventh spring is fixedly connected between the fourth slider and the right wall of the fourth slider cavity, a pull wire is fixedly connected between the right end of the fourth slider and the right end of the push rod, a clamping groove with a downward opening and a rightward opening is arranged on the lower end surface of the fourth slider, a third clamping block cavity is communicated with the upper wall of the clamping groove, a third clamping block with a lower end capable of extending into the clamping groove is arranged in the third clamping block cavity in a vertical sliding manner, an eighth spring is fixedly connected between the third clamping block and the inner wall of the third clamping block cavity, a third slider cavity is communicated between the lower wall of the fourth slider cavity and the left wall of the second gear cavity, and a third slide rod with an upper end capable of extending into the clamping groove is arranged in the third slide rod cavity in a vertical sliding manner, and a second tooth groove is formed in the right end face of the third sliding rod, and the left end of the third gear is meshed with the second tooth groove.

9. The loading and unloading elevator with automatic overweight locking according to claim 5, characterized in that: the third slider chamber with be equipped with the transmission chamber in the second gear chamber antetheca, the third slider chamber with the intercommunication is equipped with the intercommunication mouth between the transmission chamber, the second pivot front end passes the intercommunication mouth extends to the transmission intracavity and fixed first band pulley that is equipped with, the third pivot front end extends to the transmission intracavity and fixed second band pulley that is equipped with, first band pulley with around being equipped with the drive belt between the second band pulley, work as when the third slider is in last extreme position, the second gear mesh in first tooth's socket, this moment the drive belt is in the state of tightening.