CN214243532U

CN214243532U - Crane with double-limiting protection function

Info

Publication number: CN214243532U
Application number: CN202122030735.7U
Authority: CN
Inventors: 张庆元; 高红勋
Original assignee: Henan Jini Intelligent Crane Co ltd
Current assignee: Henan Jini Intelligent Crane Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2021-09-21
Anticipated expiration: 2031-08-26

Abstract

The utility model discloses a hoist with double-limit protection function, including girder and the landing leg of being connected with girder fixed connection, install hoisting mechanism on the girder, hoisting mechanism includes the electric block that hangs in the girder lower extreme, electric block is connected with the hoist through wire rope, the bottom fixed connection level of electric block sets up the mounting panel, the buffer board of level setting is installed to the below of mounting panel, the hoist is located the buffer board below, be connected through two buffer units of symmetry setting between mounting panel and the buffer board, the mounting panel bottom fixed connection between two buffer units has two pressure sensor of symmetry setting; the bottom of the buffer plate is fixedly connected with two proximity switches which are symmetrically arranged. Pressure sensor and proximity switch all play the limiting displacement to the hoist, through setting up two stop device, have reduced the emergence that the hoist dashes the top phenomenon, have guaranteed electric block's security.

Description

Crane with double-limiting protection function

Technical Field

The utility model relates to a hoist technical field especially relates to a hoist with two spacing protect function.

Background

In recent years, the application and development of cranes are more and more extensive, and various industries have higher and higher requirements on various aspects such as the performance and design of cranes, so that the cranes are promoted to be continuously developed towards intellectualization and safety. In the process of hoisting and taking the heavy object by the crane, the hoisting speed of the hoisting mechanism is higher under the driving action of the motor, so that the heavy object is easy to rush to the top, and the hoisting mechanism is damaged. At present, in order to prevent the top impact, a crane is generally provided with a heavy hammer type limiting device, but the heavy hammer type limiting device is easy to cause the falling accident of the heavy hammer, so that the damage of a workpiece or the damage of workers can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hoist with two spacing protect function to solve the problem that accident appears easily in present hoist stop device.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a crane with a double-limit protection function comprises a main beam and supporting legs fixedly connected with the main beam, wherein a lifting mechanism is mounted on the main beam, the lifting mechanism comprises an electric hoist hung at the lower end of the main beam, the electric hoist is connected with a lifting appliance through a steel wire rope, the bottom of the electric hoist is fixedly connected with a horizontally arranged mounting plate, a horizontally arranged buffer plate is mounted below the mounting plate, the lifting appliance is positioned below the buffer plate, the mounting plate and the buffer plate are connected through two symmetrically arranged buffer devices, and two symmetrically arranged pressure sensors are fixedly connected to the bottom of the mounting plate between the two buffer devices; the bottom of the buffer plate is fixedly connected with two proximity switches which are symmetrically arranged; buffer includes upper sleeve and the lower sleeve that the interval set up, upper sleeve fixed connection is in the mounting panel bottom, lower sleeve fixed connection is at the buffer board top, sliding connection has the top shoe in the upper sleeve, sliding connection has lower slider in the lower sleeve, the spliced pole of the vertical setting of fixedly connected with between top shoe and the lower slider, the first damping spring of fixedly connected with between roof in the upper sleeve and the top shoe, fixedly connected with second damping spring between the diapire in lower slider and the lower sleeve.

Preferably, the hoist includes the connecting plate that two intervals set up, installs the movable pulley between two connecting plates, and fixed connection has the fixed column that the level set up between two connecting plates of movable pulley below, installs the lifting hook on the fixed column, equal fixedly connected with elastic plate on the lateral wall of two connecting plates, the equal fixedly connected with infrared distance meter in top of two connecting plates.

Preferably, the stand that two intervals of both sides fixedly connected with of landing leg bottom set up, and two stands set up with the equal interval of landing leg, the equal fixedly connected with mount pad in both sides of the inside wall of two stands and landing leg lower part, and it has the stiffener that the slope set up to articulate between the mount pad on the stand that mount pad on the landing leg and rather than being close to, and fixedly connected has the last strong board that the level set up between two stands, the bottom and the last strong board fixed connection of landing leg.

Preferably, a lower strong plate horizontally arranged is fixedly connected between the two stand columns, the lower strong plate and the upper strong plate are arranged at intervals and fixedly connected with reinforcing blocks between the lower strong plate and the upper strong plate, the bottom parts of the lower strong plate and the stand columns are fixedly connected with vertically arranged anchor columns, and the end parts of the anchor columns are arranged in a conical shape.

Preferably, a plurality of upper inclined rods which are obliquely and upwardly arranged are fixedly connected to the side wall of the anchor post, lower inclined rods which are obliquely and downwardly arranged are fixedly connected to the side wall of the anchor post above the upper inclined rods, and the end parts of the lower inclined rods are fixedly connected with the upper inclined rods.

Preferably, the crane further comprises a steel bar column, the steel bar column sequentially penetrates through the upper strong plate, the reinforcing block and the lower strong plate, the end part of the steel bar column is arranged in a hook shape, and the top of the steel bar column penetrates through the upper strong plate and extends to the position above the upper strong plate.

The utility model discloses the beneficial effect who has does: (1) the utility model discloses set gradually mounting panel and buffer board in the electric block bottom, set up proximity switch in the buffer board bottom simultaneously, set up buffer and pressure sensor bottom the mounting panel, the hoist is at the in-process that rises to rise, at first the operation that stops electric block through the controller when proximity switch detects the hoist, damage appears if proximity switch, then buffer can play certain cushioning effect when the hoist continues to rise, avoid the quick dashing of hoist to push up the damage that causes electric block, when buffer board conflict pressure sensor, pressure sensor passes through the operation that the controller stopped electric block, thereby the dashing of hoist has been avoided, through setting up two stop device, the emergence of hoist dashing the top phenomenon has been reduced, electric block's security has been guaranteed.

(2) Buffer includes upper sleeve and lower sleeve, is provided with first damping spring in the upper sleeve, is provided with second damping spring in the lower sleeve, is connected through the spliced pole between upper sleeve and the lower sleeve, and when the buffer board rose, first damping spring received the compression, and second damping spring then was in tensile state, and first damping spring and second damping spring's combined action has improved buffer's buffering effect, has reduced the damage of hoist to electric block.

(3) The stability of landing leg installation has been guaranteed through setting up the base to the stability of this hoist has been guaranteed.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection between the buffer board and the mounting board of the present invention;

fig. 3 is a schematic structural view of the buffering device of the present invention;

fig. 4 is a schematic view of the connection relationship between the foundation and the supporting legs of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A crane with a double-limit protection function comprises a main beam 1 and supporting legs 2 fixedly connected with the main beam 1, wherein a lifting mechanism is mounted on the main beam 1, the lifting mechanism comprises an electric hoist 3 suspended at the lower end of the main beam 1, the electric hoist 3 is connected onto the main beam 1 in a rolling manner through walking wheels, the electric hoist 3 is connected with a lifting appliance through a steel wire rope, the bottom of the electric hoist 3 is fixedly connected with a horizontally arranged mounting plate 4, a horizontally arranged buffer plate 5 is mounted below the mounting plate 4, the buffer plate 5 and the mounting plate 4 are arranged at intervals and are connected through two symmetrically arranged buffer devices, and two symmetrically arranged pressure sensors 6 are fixedly connected to the bottom of the mounting plate 4 between the two buffer devices; two proximity switches 7 which are symmetrically arranged are fixedly connected to the bottom of the buffer plate 5. The trompil that is used for wire rope to pass is all seted up on mounting panel 4 and the buffer board 5, and wire rope passes the trompil on buffer board 5 and the mounting panel 4 in proper order and is connected with the hoist, and fixedly connected with audible-visual annunciator 8 is still gone back to one side of mounting panel 4. The proximity switch 7, the pressure sensor 6, the electric hoist 3 and the audible and visual alarm 8 are electrically connected with a controller of the crane (the circuit connection relationship is prior art and is not repeated here), in the lifting process of the lifting appliance, when the proximity switch 7 detects that the distance between the top of the lifting appliance and the buffer plate 5 reaches a limit value, the proximity switch 7 sends a signal to the controller to stop the electric hoist 3 and simultaneously starts the audible and visual alarm 8, so as to prevent the lifting appliance from damaging the electric hoist 3, when the proximity switch 7 breaks down, the lifting appliance pushes against the buffer plate 5 to lift the buffer plate 5, the buffer plate 5 and the buffer device play a certain buffer role, the lifting appliance continues to lift until the buffer plate 5 pushes against the pressure sensor 6, when the pressure sensor 6 reaches a numerical upper limit, the proximity switch sends a signal to the controller to control the electric hoist 3 to stop working, and simultaneously activates the audible and visual alarm 8. The two sets of limiting devices are arranged, so that the electric hoist 3 is prevented from being damaged by jacking of the lifting appliance when one set of limiting device is damaged, and the safety of the crane in the lifting process is ensured.

The hoist is located 5 below of buffer board, buffer includes upper sleeve 9 and lower sleeve 10 that the interval set up, upper sleeve 9 fixed connection is in 4 bottoms of mounting panel, lower sleeve 10 fixed connection is at 5 tops of buffer board, sliding connection has slider 11 in the upper sleeve 9, sliding connection has slider 12 down in the lower sleeve 10, spliced pole 13 of the vertical setting of fixedly connected with between slider 11 and the lower slider 12, spliced pole 13 passes upper sleeve 9 bottom and extends to in lower sleeve 10 promptly, the first damping spring 14 of fixedly connected with between roof in the upper sleeve 9 and the upper slider 11, fixedly connected with second damping spring 15 between the diapire in lower slider 12 and the lower sleeve 10. During the use, buffer board 5 receives the impact of hoist and to the direction removal that is close to mounting panel 4, and then makes spliced pole 13 to the direction removal that is close to upper sleeve 9, and first damping spring 14 receives the compression, and second damping spring 15 is then in tensile state, and spliced pole 13 resets under first damping spring 14 and second damping spring 15's effort, and then plays the effect of buffering.

Optionally, the hoist includes the connecting plate 16 that two intervals set up, proximity switch 7's vertical projection is located the connecting plate 16 top, install movable pulley 17 between two connecting plates 16, fixed column 18 that fixed connection has the level to set up between two connecting plates 16 of movable pulley 17 below, install lifting hook 19 on the fixed column 18, equal fixedly connected with elastic plate 20 on two connecting plates 16's the lateral wall, the material of elastic plate 20 can be selected from rubber, silica gel or polyurethane, the equal fixedly connected with infrared distance meter 21 in top of two connecting plates 16, infrared distance meter 21 is connected with the controller electricity. Lifting hook 19 can take place to rock at the in-process of lifting by crane the heavy object, this just makes the hoist can collide with barrier on every side, can reduce the damage of collision to hoist itself through setting up elastic plate 20, and infrared distance meter 21 can monitor the height that lifting hook 19 rises or descends, when its rise or descend the height reach the upper limit, infrared distance meter 21 can send signal to the controller, audible-visual annunciator 8 is started to the controller, the staff takes corresponding operation in order to avoid the hoist to dash the top or touch to the earth.

Further, every one side in girder 1 bottom all is provided with landing leg 2 that two intervals set up, through bottom end rail (not shown in the figure) fixed connection between two landing legs 2 of girder 1 homonymy, the equal fixedly connected with ground base in bottom of every landing leg 2, the ground base includes the stand 22 that two intervals set up, two stands 22 are located the both sides of landing leg 2 respectively and two stands 22 and the equal interval setting of landing leg 2, the equal fixedly connected with mount pad 23 in both sides of the inside wall of two stands 22 and the 2 lower parts of landing leg, it has the stiffener 24 that the slope set up to articulate between the mount pad 23 on the stand 22 on the mount pad 23 on the landing leg 2 and rather than being close to, the last strong board 25 that fixedly connected with level set up between two stands 22, the bottom and the last strong board 25 fixed connection of landing leg 2, it is located the below of stiffener 24 to go up strong board 25. When the ground foundation is used, the upper reinforcing plate 25 is buried below the ground, so that part of the upright posts 22 are also positioned below the ground, the cross section area of the upper reinforcing plate 25 is larger than that of the bottoms of the supporting legs 2, the contact area of the ground foundation and the soil is increased through the arrangement of the upper reinforcing plate 25, the stability of the ground foundation is ensured, and the stability of the ground foundation is also improved through the arrangement of the reinforcing rods 24.

Further, still fixedly connected with lower strong board 26 that the level set up between two stands 22, lower strong board 26 and last strong board 25 interval set up and fixedly connected with boss 27 between the two, the equal fixedly connected with anchor post 28 of vertical setting in the bottom of lower strong board 26 and the bottom of stand 22, the tip of anchor post 28 is the toper setting. By arranging the lower reinforcing plates 26 and the anchor posts 28, the contact area between the foundation and the soil is further increased, and the stability of the foundation is improved.

Further, a plurality of upper inclined rods 29 arranged obliquely upward are fixedly connected to the side walls of the anchor posts 28, lower inclined rods 30 arranged obliquely downward are fixedly connected to the side walls of the anchor posts 28 above the upper inclined rods 29, and the ends of the lower inclined rods 30 are fixedly connected to the upper inclined rods 29. The upper and lower inclined bars 29, 30 improve the stability of the anchor posts 28 in the ground and thus the stability of the foundation.

Optionally, the foundation further includes a steel bar column 31, the steel bar column 31 sequentially passes through the upper strong plate 25, the reinforcing block 27 and the lower strong plate 26, and the end portions of the steel bar column 31 are arranged in a hook shape, the top portion of the steel bar column 31 passes through the upper strong plate 25 and extends above the upper strong plate 25, and concrete is poured into the upright column 22, the upper strong plate 25, the reinforcing block 27 and the lower strong plate 26. Through setting up the bending resistance performance that steel column 31 improved the foundation, guarantee foundation's stability.

The using method comprises the following steps: during the use, at first bury the foundation below with last strong board 25 and below, then at the in-process of lifting by crane the heavy object, when proximity switch 7 detected that the distance between hoist top and buffer board 5 reaches the limit value, proximity switch 7 signals to the controller and makes electric block 3 stop working, start audible-visual annunciator 8 simultaneously, thereby prevent that the hoist from causing the damage to electric block 3, if proximity switch 7 breaks down, when the hoist continues to rise, the hoist conflicts buffer board 5 and makes buffer board 5 rise, buffer board 5 and buffer play certain cushioning effect, the hoist continues to rise until buffer board 5 conflicts pressure sensor 6, can send a signal and control electric block 3 stop working when pressure sensor 6 reaches numerical value upper limit, start audible-visual annunciator 8 simultaneously. The two sets of limiting devices are arranged, so that the electric hoist 3 is prevented from being damaged by jacking of the lifting appliance when one set of limiting device is damaged, and the safety of the crane in the lifting process is ensured.

The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification of the above embodiments.

Claims

1. The utility model provides a hoist with two spacing protect function, includes girder and the landing leg with girder fixed connection, installs hoisting mechanism on the girder, and hoisting mechanism is connected with hoist, its characterized in that through wire rope including hanging in the electric block of girder lower extreme, electric block: the bottom of the electric hoist is fixedly connected with a horizontally arranged mounting plate, a horizontally arranged buffer plate is mounted below the mounting plate, the lifting appliance is positioned below the buffer plate, the mounting plate and the buffer plate are connected through two symmetrically arranged buffer devices, and two symmetrically arranged pressure sensors are fixedly connected to the bottom of the mounting plate between the two buffer devices; the bottom of the buffer plate is fixedly connected with two proximity switches which are symmetrically arranged; buffer includes upper sleeve and the lower sleeve that the interval set up, upper sleeve fixed connection is in the mounting panel bottom, lower sleeve fixed connection is at the buffer board top, sliding connection has the top shoe in the upper sleeve, sliding connection has lower slider in the lower sleeve, the spliced pole of the vertical setting of fixedly connected with between top shoe and the lower slider, the first damping spring of fixedly connected with between roof in the upper sleeve and the top shoe, fixedly connected with second damping spring between the diapire in lower slider and the lower sleeve.

2. The crane with the double-limit protection function as claimed in claim 1, wherein: the hoist includes the connecting plate that two intervals set up, installs the movable pulley between two connecting plates, and fixed connection has the fixed column that the level set up between two connecting plates of movable pulley below, installs the lifting hook on the fixed column, equal fixedly connected with elastic plate on the lateral wall of two connecting plates, the equal fixedly connected with infrared distance meter in top of two connecting plates.

3. The crane with the double-limit protection function as claimed in claim 1, wherein: the stand that two intervals of both sides fixedly connected with of landing leg bottom set up, and two stands set up with the equal interval in landing leg, and the equal fixedly connected with mount pad in both sides of the inside wall of two stands and landing leg lower part articulates between the mount pad on the stand that the mount pad on the landing leg is rather than being close to has the stiffener that the slope set up, and fixed connection has the last strong board that the level set up between two stands, the bottom and the last strong board fixed connection of landing leg.

4. A crane with double-limit protection function as claimed in claim 3, wherein: the lower strong plate is fixedly connected between the two stand columns and horizontally arranged, the lower strong plate and the upper strong plate are arranged at intervals and fixedly connected with reinforcing blocks between the lower strong plate and the upper strong plate, the bottom parts of the lower strong plate and the stand columns are fixedly connected with anchor columns which are vertically arranged, and the end parts of the anchor columns are arranged in a conical shape.

5. A crane with double-limit protection function as claimed in claim 4, wherein: the anchor post is characterized in that a plurality of inclined upward-arranged upward-inclined rods are fixedly connected to the side wall of the anchor post, downward-inclined rods are fixedly connected to the side wall of the anchor post above the upward-inclined rods, and the end portions of the downward-inclined rods are fixedly connected with the upward-inclined rods.

6. A crane with double-limit protection function as claimed in claim 4, wherein: the crane further comprises a steel bar column, the steel bar column sequentially penetrates through the upper strong plate, the reinforcing block and the lower strong plate, the end portion of the steel bar column is in hook-shaped arrangement, and the top of the steel bar column penetrates through the upper strong plate and extends to the position above the upper strong plate.