CN210763972U - Low-clearance chain block - Google Patents

Abstract

The utility model discloses a low headroom chain block relates to hoisting equipment technical field, and chain block includes sports car, vertical board and chain block body, and wherein the sports car of hand pulling includes first panel, second panel, connecting rod, first sprocket that are parallel to each other, with first sprocket coaxial coupling's drive gear, meshing gear and gyro wheel, is equipped with two supporting wheels on the first panel, and each gyro wheel and each supporting wheel are all taken on external guide rail. The vertical plate comprises a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are connected, the second connecting portion is located below the first connecting portion, the first connecting portion is sleeved on the connecting rod, the first connecting portion is rotatably provided with a first chain wheel, the chain block body is arranged on the second connecting portion, the chain block body does not occupy the space of the first connecting portion of the vertical plate, the hoisting chain can hoist the heavy object to an effective space, the space is limited to a small space, the heavy object is hoisted easily, and the workshop is effectively utilized.

Description

Low-clearance chain block

Technical Field

The utility model relates to an explosion-proof hoisting equipment technical field, more specifically say, relate to a low headroom chain block.

Background

The chain block is the most ideal explosion-proof hoisting equipment in the world and is mainly applied to space hoisting operation containing inflammable and explosive gas and dust.

The application of chain block among the prior art is more extensive, and general chain block includes body and sports car, and the chain block body can be in vertical direction lift by crane the heavy object, and the sports car can drive the calabash body and move in the horizontal direction to shift the heavy object to suitable position. However, when the chain block is used in a low space, the height of the chain block body is large, so that the heavy object cannot be lifted to an effective height and cannot be completed, the heavy object is difficult to lift, and the lifting of the heavy object is limited. In order to avoid the problem, a mode of lifting and heightening a workshop is adopted in some cases, and a mode of digging the floor of the workshop downwards is also adopted in some cases, so that the floor of the workshop is reduced, the workshop can not be used for other purposes if the workshop is not provided with the conditions, the workshop can not be effectively utilized, and the cost is greatly improved.

Therefore, how to solve the problems that the hand chain block in the prior art is greatly limited by space, cannot lift the heavy object to an effective height, is difficult to lift the heavy object, and cannot effectively utilize a workshop becomes an important technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low headroom chain block in order to solve among the prior art chain block exist receive the space restriction big, can't promote the heavy object to effective height, lift by crane the heavy object difficulty, make the unable effectively utilized technical problem in workshop. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

The utility model provides a low headroom chain block, include:

the hand-pulling sports car comprises a support frame and a transmission assembly, wherein the support frame is used for an external guide rail to stretch into, the transmission assembly is arranged on the support frame, the support frame comprises a first panel, a second panel and a connecting rod, the first panel and the second panel are parallel to each other, the connecting rod is used for connecting the first panel and the second panel, the transmission assembly comprises a first chain wheel, a first hand chain arranged on the first chain wheel, a transmission gear coaxially connected with the first chain wheel, two meshing gears meshed with the two sides of the transmission gear respectively, and two idler wheels coaxially connected with the two meshing gears respectively, the first chain wheel is arranged on one side, away from the second panel, of the first panel, the transmission gear, the meshing gears and the idler wheels are all arranged on one side, facing the second panel, of the first panel, and two support wheels are arranged on the side, facing the first panel, of the second panel, the positions of the two supporting wheels respectively correspond to the positions of the two rollers, and each roller and each supporting wheel are lapped on the external guide rail so as to enable the hand-drawn sports car to move along the guide direction of the external guide rail;

the vertical plate comprises a first connecting part and a second connecting part connected with the first connecting part, the first connecting part is sleeved on the connecting rod, a first chain wheel is rotatably arranged on the first connecting part, and the second connecting part is positioned below the first connecting part;

the chain block body sets up on the second connecting portion, the chain block body is including relative the fixed casing of second connecting portion, setting are in transmission shaft, setting in the casing are in epaxial second hand sprocket and jack-up sprocket, with second hand sprocket matched with second hand chain, with jack-up sprocket matched with jack-up chain, the power of second hand sprocket transmits for after reduction gear's speed reduction jack-up sprocket, jack-up chain includes the stiff end and the end of lifting by crane that is used for lifting by crane the heavy object, the end of lifting by crane passes through in proper order the jack-up sprocket first sprocket cooperatees with the two, just the below of lifting by crane the end is equipped with the lifting hook.

Preferably, the first panel and the second panel are vertically arranged and parallel to each other, the connecting rod and the vertical plates are arranged into two, the connecting rod and the vertical plates are parallel to each other respectively, and the first connecting parts of the vertical plates are sleeved on the two connecting rods, and the second connecting parts are fixedly connected with the chain block body.

Preferably, a straight rod is arranged between the two first connecting portions, two ends of the straight rod are respectively connected with the two first connecting portions, the first chain wheel is rotatably sleeved on the straight rod, and the straight rod and the first chain wheel are both located between the two connecting rods.

Preferably, two the lateral part of second connecting portion all is equipped with and is used for placing the depressed part of chain block body, and two be connected with the second sprocket between the second connecting portion, the position of second sprocket is less than the position of chain block body, the hoisting chain the end of hoisting passes through in proper order the hoisting sprocket the second sprocket with first sprocket.

Preferably, the axes of the first sprocket, the second sprocket, the first hand sprocket, the second hand sprocket, the lifting sprocket and the transmission shaft are all parallel to each other.

Preferably, the hoisting sprocket, the first sprocket and the second sprocket are provided with cross chain guide grooves for the hoisting chain to extend into so as to prevent the hoisting chain from rotating relative to the hoisting sprocket or the first sprocket or the second sprocket.

Preferably, be equipped with respectively with two on the chain block body the second connecting portion are connected, and two baffles that are parallel to each other, the transmission shaft runs through two the baffle, the second sprocket with reduction gears is located two respectively the baffle one side that deviates from each other, hoisting sprocket with hoisting chain sets up two between the baffle, the casing is established including being used for the cover the preceding shell of second sprocket is established with being used for the cover the backshell of reduction gears, preceding shell with the backshell is all fixed on the baffle, just still be equipped with on the preceding shell and be used for the confession the bar mouth that the second sprocket stretches out.

Preferably, guide wheels for guiding the lifting chain are respectively arranged between the two partition plates, between the two first connecting portions, and between the two second connecting portions.

Preferably, the external guide rail is an i-steel, and two sides of the i-steel respectively extend into the lower parts of the roller and the supporting wheel.

Preferably, the diameter of the meshing gear and the diameter of the roller are both larger than the diameter of the transmission gear, and the diameter of the roller is smaller than the diameter of the meshing gear.

In the technical proposal provided by the utility model, the low clearance chain block comprises a chain sports car, a vertical plate and a chain block body, wherein the hand-pulling sports car comprises a support frame and a transmission component arranged on the support frame, the support frame comprises a first panel, a second panel and a connecting rod which are parallel to each other, the connecting rod is used for connecting the first panel and the second panel, the support frame is used for an external guide rail to extend into, the transmission component comprises a first chain wheel, a transmission gear coaxially connected with the first chain wheel, two meshing gears respectively meshed with two sides of the transmission gear and two idler wheels respectively coaxially connected with the two meshing gears, the first chain wheel is arranged on one side of the first panel, which is away from the second panel, the transmission gear, the meshing gears and the idler wheels are all arranged on one side of the first panel, which faces the second panel, thus, the first hand chain wheel rotates to drive the two rollers to roll through the transmission gear and the meshing gear; and the side of the first panel facing the second panel is provided with two supporting wheels, the two supporting wheels respectively correspond to the positions of the two rollers, each roller and each supporting wheel are lapped on the external guide rail, and the rollers and the supporting wheels roll along the external guide rail together, so that the hand buggy can move along the guide direction of the external guide rail. The vertical plate comprises a first connecting part and a second connecting part which are connected, the second connecting part is positioned below the first connecting part, the first connecting part is sleeved on the connecting rod, the first connecting part is rotatably provided with a first chain wheel, the chain block body is arranged on the second connecting part, the chain block body is positioned at the side part of the whole structure and does not occupy the space of the first connecting part of the vertical plate, the chain block body comprises a shell, a transmission shaft, a second chain wheel, a hoisting chain wheel and a hoisting chain, the hoisting chain comprises a fixed end and a hoisting end for hoisting a heavy object, the hoisting end sequentially passes through the hoisting chain wheel and the first chain wheel and is matched with the hoisting chain wheel and the first chain wheel, a lifting hook is arranged below the hoisting end, the height of the hoisting chain wheel is lower than that of the first chain wheel, the hoisting end of the hoisting chain can be bent to the high position firstly and then hoists the heavy object downwards, and the chain block body does, the weight can be lifted to an effective space, the space limitation is small, the weight is easy to lift, and the workshop is effectively utilized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a low headroom chain block in an embodiment of the present invention;

fig. 2 is a front view of the low clearance chain block in the embodiment of the present invention;

fig. 3 is a right side view of the low headroom chain block in an embodiment of the present invention;

fig. 4 is a top view of the low clearance chain block in the embodiment of the present invention;

fig. 5 is a schematic view of the internal structure of the low headroom chain block in the embodiment of the present invention;

fig. 6 is a schematic structural view of the chain block body in the embodiment of the present invention.

In FIGS. 1-6:

1-support frame, 101-first panel, 102-second panel, 103-connecting rod, 2-first chain wheel, 3-transmission gear, 4-meshing gear, 5-rolling wheel, 6-support wheel, 7-first chain wheel, 8-vertical plate, 801-first connecting part, 802-second connecting part, 9-chain block body, 901-shell, 902-transmission shaft, 903-second chain wheel, 904-second chain wheel, 905-hoisting chain wheel, 906-hoisting chain wheel, 10-first chain wheel, 11-straight rod, 12-second chain wheel, 13-cross chain guide groove, 14-partition plate, 15-strip-shaped opening, 16-guide wheel and 17-I-steel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An object of this embodiment is to provide a low headroom chain block, which solves the problem that the chain block in the prior art is limited by space, cannot lift a heavy object to an effective height, is difficult to lift the heavy object, and cannot effectively utilize a workshop.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1-4, in the present embodiment, the low clearance chain block includes a chain block, a vertical plate 8, and a block body 9, wherein the chain block includes a support frame 1, and a transmission assembly disposed on the support frame 1, the support frame 1 is used for an external guide rail to extend into, as shown in fig. 1 and 4, the support frame 1 includes a first panel 101, a second panel 102, and a connecting rod 103, the connecting rod 103 is used for connecting the first panel 101 and the second panel 102, the transmission assembly includes a first chain wheel 2, a first chain 7, a transmission gear 3, a meshing gear 4, and a roller 5, the first chain 7 is disposed on the first chain wheel 2, the first chain wheel 2 can be pulled to rotate by pulling the first chain 7, the transmission gear 3 is coaxially connected with the first chain wheel 2, so that the first chain wheel 2 rotates to drive the transmission gear 3, the two meshing gears 4 are respectively meshed with two sides of the transmission gear 3, and the two idler wheels 5 are respectively coaxially connected with the two meshing gears 4, so that the transmission gear 3 rotates to drive the two meshing gears 4 to rotate simultaneously and drive the two idler wheels 5 to roll simultaneously, the first hand chain wheel 2 is arranged on one side of the first panel 101, which is far away from the second panel 102, the transmission gear 3, the two meshing gears 4 and the two idler wheels 5 are arranged on one side of the first panel 101, which faces the second panel 102, the side of the second panel 102, which faces the first panel 101, is provided with two supporting wheels 6, the supporting wheels 6 are used for supporting an external guide rail, the positions of the two supporting wheels 6 are respectively corresponding to the positions of the two idler wheels 5, so that each idler wheel 5 and each supporting wheel 6 can be lapped on the external guide rail, as shown in fig. 3, when the first hand chain wheel 7 is manually pulled, the first hand chain wheel, Drive gear 3, meshing gear 4, gyro wheel 5 all begin to rotate, and gyro wheel 5 rolls on the outer guide rail, just can drive whole hand power sports car and remove along the direction of outer guide rail. The vertical plate 8 comprises a first connection portion 801 and a second connection portion 802, the first connection portion 801 is connected with the second connection portion 802, as shown in fig. 2, wherein the first connection portion 801 is sleeved on the connection rod 103, the first chain wheel 10 is rotatably arranged on the first connection portion 801, the second connection portion 802 is arranged below the first connection portion 801, and the chain block body 9 is arranged on the second connection portion 802, such that the chain block body 9 is arranged below the first connection portion 801 and the sports car without occupying the upper space, specifically, the chain block body 9 comprises a housing 901, a transmission shaft 902 arranged in the housing 901, a second chain wheel 903 and a jack chain wheel 905 arranged on the transmission shaft 902, a second chain 904 matched with the second chain wheel 903, and a jack chain 906 matched with the jack chain wheel 905, the housing 901 is fixed relative to the second connection portion 802, wherein the second chain wheel 903 also needs to be manually pulled to rotate in the form of the second chain 904, the power of the second hand sprocket 903 is then transmitted to the jack sprocket 905 after being decelerated by a deceleration mechanism also provided in the casing 901. The hoisting chain 906 comprises a fixed end and a hoisting end for hoisting a heavy object, the hoisting end sequentially passes through the hoisting chain wheel 905 and the first chain wheel 10 and is matched with the hoisting chain wheel 905 and the first chain wheel 10, namely, the hoisting end passes through the hoisting chain wheel 905 and then is matched with the first chain wheel 10 above, so that the height of the highest point to be hoisted is increased, a lifting hook is arranged below the hoisting end, and the lifting hook is directly used for hoisting the heavy object and can lift the heavy object to a higher position.

Specifically, the reduction mechanism may include a sun gear sleeved on the transmission shaft 902, a planetary gear meshed with the sun gear, a gear ring, and spline hole gears connected with the planetary gears, the spline hole gears are sleeved on the hoisting sprocket 905, the gear ring is disposed on the outer periphery of the planetary gears and meshed with the planetary gears, so that when the first hand sprocket 2 rotates, the transmission shaft 902 is driven to rotate, the sun gear is driven to rotate at the same speed, the sun gear transmits power to the planetary gears, the revolution speed of the planetary gears is less than the rotation speed of the sun gear, the planetary gears further transmit power to the spline hole gears, the rotation speed of the spline hole gears is also less than that of the planetary gears, the spline hole gears are fixedly connected with the hoisting sprocket 905, so that the rotation speed of the hoisting sprocket 905 is the same as that of the spline hole gears, and in sum, the speed of the hoisting sprocket 905 is less than that of the hand sprockets, deceleration is achieved.

So set up, chain block body 9 is located the lateral part of overall structure, do not occupy the space of the first connecting portion 801 of vertical board 8, and chain block body 9 includes casing 901, transmission shaft 902, second sprocket 903, jack-up sprocket 905 and jack-up chain 906, jack-up chain 906 includes stiff end and the end of lifting by crane that is used for lifting by crane the heavy object, the end of lifting by crane can pass through jack-up sprocket 905 in proper order, first sprocket 10 and cooperate with the two, the below of the end of lifting by crane is equipped with the lifting hook, the height that highly is less than first sprocket 10 of jack-up sprocket 905 explains that the end of lifting by crane of jack-up chain 906 can buckle toward the eminence earlier, the heavy object of hanging down again, chain block body 9 self does not occupy the space, also can lift by crane the heavy object to effective space, it is little to receive the space restriction, easily lift by crane.

As an alternative embodiment, the first panel 101 and the second panel 102 are both vertically arranged and parallel to each other, and the two connecting rods 103 are arranged in two, as shown in fig. 4, the two connecting rods 103 are parallel to each other; the vertical plates 8 are also arranged to be two, the two vertical plates 8 are also parallel to each other, the first connecting portions 801 of the two vertical plates 8 are all sleeved on the two connecting rods 103, and the two second connecting portions 802 are all fixedly connected with the chain block body 9. Specifically, two through holes are formed in each of the first panel 101 and the second panel 102, and also two through holes are formed in the first connecting portion 801 of each of the vertical plates 8, each of which has the same size as the cross section of the connecting bar 103, one of the connecting rods 103 sequentially passes through one of the through holes of the first panel 101, one of the through holes of the two first connecting portions 801, and one of the through holes of the second panel 102, the other connecting rod 103 sequentially passes through the other through hole of the first panel 101, the other through hole of the two connecting portions, and the other through hole of the second panel 102, and the periphery cover of each connecting rod 103 is equipped with the sleeve, all is equipped with the sleeve between first panel 101 and the vertical board 8, between two vertical boards 8, between second panel 102 and the vertical board 8, and the tip of each connecting rod 103 passes through fasteners such as nut fastening at last, avoids each part of hand power sports car to take place to remove.

Because the common sports car is hung on a cross beam of a workshop, the cross beam is equivalent to an external guide rail, and the arrangement is that the first panel 101 and the second panel 102 are vertically arranged, so that the roller 5 can be well and stably positioned on the external guide rail, and the hand-pulling sports car can be driven to be hung on the external guide rail more stably; the two connecting rods 103 enable the connection between the first panel 101 and the second panel 102 to be more stable, and enable the vertical plate 8 to be more stable, so that the situation that the vertical plate 8 is only fixed on one connecting rod 103 to shake is avoided; the vertical plate 8 is also provided with two vertical plates, so that the chain block body 9 can be better fixed.

As an alternative embodiment, a straight rod 11 is disposed between the two first connecting portions 801, two ends of the straight rod 11 are respectively connected to the two first connecting portions 801, preferably, the straight rod 11 is disposed horizontally, the first sprocket 10 is sleeved on the straight rod 11 and can rotate relative to the straight rod 11, that is, the size of the middle through hole of the first sprocket 10 is larger than the size of the cross section of the straight rod 11, and the straight rod 11 and the first sprocket 10 are both disposed between the two connecting rods 103, as shown in fig. 4.

So set up, set up straight-bar 11 and first sprocket 10 between two connecting rods 103, like this when lifting by crane the heavy object, vertical board 8 both received the hand power sports car and is two ascending effort that connecting rod 103 gave promptly, also can receive the straight-bar 11 simultaneously and the decurrent effort that first sprocket 10 gave, both sides receive the effort that makes progress like this, and the centre receives down effort, and the atress is more even, avoids vertical board 8 atress uneven to receive the damage.

As an alternative embodiment, as shown in fig. 2, the side portions of the two second connecting portions 802 are each provided with a recessed portion, the recessed portions are used for placing the chain block body 9, and then the chain block body 9 is fixed in the recessed portions of the two. As shown in fig. 5, a second chain wheel 12 is connected between the second connecting portions 802 of the two vertical plates 8, the position of the second chain wheel 12 is lower than that of the chain block body 9, the hoisting end of the hoisting chain 906 sequentially passes through the hoisting chain wheel 905, the second chain wheel 12 and the first chain wheel 10, and the position of the second chain wheel 12 is closer to the hoisting chain wheel 905, so that the hoisting chain 906 needs to be firstly matched with the hoisting chain wheel 905, then downwards matched with the second chain wheel 12, and finally matched with the first chain wheel 10 above.

Compare and do not have second sprocket 12 the case, directly cooperate with first sprocket 10 after hoisting chain 906 and the cooperation of hoisting chain 905, so set up, hoisting chain 906 and the cooperation of hoisting chain 905 back down-drive, just can cooperate with second sprocket 12, like this hoisting chain 906 just can to a great extent cooperate with the guide way on the hoisting chain 905, upwards again after the cooperation of same downwards and second sprocket 12, hoisting chain 906 also to a great extent cooperates with the guide way on the second sprocket 12, whole hoisting chain 906's transmission in-process is very steady like this, play the tensioning, avoid the relative each sprocket of hoisting chain 906 the condition of sliding to appear.

As an alternative embodiment, the axes of the first sprocket 10, the second sprocket 12, the first hand sprocket 2, the second hand sprocket 903, the jack sprocket 905 and the drive shaft 902 are all parallel to each other.

So set up, the rotation direction of first sprocket 10, second sprocket 12, first hand sprocket 2, second hand sprocket 903, jack-up sprocket 905 is unanimous, and transmission direction is unanimous promptly for jack-up chain 906 and hand power chain all transmit in the coplanar, and transmission efficiency is high.

As an alternative embodiment, each of the lifting sprocket 905, the first sprocket 10, and the second sprocket 12 is provided with a cross chain guiding slot 13, the cross chain guiding slot 13 is used for the lifting chain 906 to extend into, and the specific structural shape of the cross chain guiding slot 13 is as shown in fig. 6, so as to prevent the lifting chain 906 from rotating relative to the lifting sprocket 905 or the first sprocket 10 or the second sprocket 12.

The guide groove of the chain of the common hoisting block for lifting the heavy object is very simple, and the chain is easy to rotate or twist, so that loss or accidents are caused. So set up, cross guide chain groove 13 can prevent effectively that hoisting chain 906 from rotating or distorting to avoid damaging hoisting chain 906 and chain block body.

As an alternative embodiment, two partition plates 14 are disposed on the chain block body 9, as shown in fig. 1 and fig. 3, the two partition plates 14 are respectively connected to the two second connecting portions 802, and the two partition plates 14 are parallel to each other. Specifically, two partition plates 14 are fixed relatively to each other, the side portions of the two partition plates 14 are attached to the side surfaces of the two second connecting portions 802, and then the connection is also achieved by providing through holes and connecting rods. The transmission shaft 902 runs through two clapboards 14, the second hand sprocket 903 and the speed reducing mechanism are respectively positioned at one side where the two clapboards 14 depart from each other, the hoisting sprocket 905 and the hoisting chain 906 are arranged between the two clapboards 14, so that the hoisting chain 906 is directly matched with the second sprocket 12 and the first sprocket 10 between the two vertical boards 8 after passing through the hoisting sprocket 905, the hoisting chain 906 is driven in the vertical plane, the transmission direction cannot be changed, and the parts at one side where the two clapboards 14 depart from each other and the parts between the two clapboards 14 cannot be influenced by each other. The housing 901 comprises a front shell and a rear shell, wherein the front shell is used for covering the second hand chain wheel 903, the rear shell is used for covering the speed reducing mechanism, but the front shell and the rear shell are both fixed on the partition plate 14, and the front shell is further provided with a strip-shaped opening 15 for the second hand chain 904 to extend out, as shown in fig. 3, the second hand chain 904 can be manually pulled from the outside of the front shell.

So set up, whole chain block body 9's compact structure can not influence each other between each part, still does not influence the use, thereby chain block body 9 is more firm through being connected of two baffles 14 with vertical board 8 moreover.

As an alternative embodiment, guide wheels 16 are respectively disposed between the two partition plates 14, between the two first connecting portions 801, and between the two second connecting portions 802, as shown in fig. 5, the guide wheels 16 are used for guiding the hoist chain 906, the guide wheels 16 between the two partition plates 14 are disposed at a position beside the hoist chain wheel 905, the guide wheels 16 between the two first connecting portions 801 are disposed at a position beside the first chain wheel 10, and the guide wheels 16 between the two second connecting portions 802 are disposed at a position beside the second chain wheel 12.

With such an arrangement, the guide wheel 16 can enable the lifting chain 906 to be better matched with the lifting chain wheel 905, the first chain wheel 10 and the second chain wheel 12, so that the phenomenon of disjointing is avoided.

In a preferred embodiment, the external guide rail is an i-beam 17, as shown in fig. 3, two sides of the i-beam 17 respectively extend below the roller 5 and the support wheel 6, so that the roller 5 and the support wheel 6 can respectively roll along the length direction of the i-beam 17 on two sides of the i-beam 17, thereby driving the sports cart, the vertical plate 8 and the chain block body 9 to move.

As an alternative embodiment, the diameter of the meshing gear 4 and the diameter of the roller 5 are both larger than the diameter of the transmission gear 3, and the diameter of the roller 5 is smaller than the diameter of the meshing gear 4, as shown in fig. 1, specifically, the rotation speed of the transmission gear 3 is the same as the rotation speed of the first hand sprocket 2, the rotation speed of the meshing gear 4 is smaller than the rotation speed of the transmission gear 3, and the roller 5 is coaxial with the meshing gear 4, so that the roller 5 and the meshing gear 4 are at the same speed, that is, the speed of the roller 5 is smaller than the speed of the transmission gear 3.

So set up, make the output speed of first sprocket 2 reduce through drive gear 3, meshing gear 4, gyro wheel 5, make low headroom chain block slow a little at the translation rate on I-steel 17, can guarantee that the heavy object moves steadily on the horizontal direction to remove the heavy object to accurate position.

The low clearance chain block is described in detail with reference to the above embodiments, in this embodiment, the low clearance chain block includes a running cart, a vertical plate 8, and a chain block body 9, wherein the running cart includes a support frame 1 for an i-steel 17 to extend into, and a transmission assembly disposed on the support frame 1, the support frame 1 includes a first panel 101, a second panel 102, and two connecting rods 103 disposed vertically and parallel to each other, the two connecting rods 103 are disposed in a same horizontal plane, the transmission assembly includes a first chain wheel 2, a first chain 7 disposed on the first chain wheel 2, a transmission gear 3 coaxially connected to the first chain wheel 2, two meshing gears 4 respectively meshed with two sides of the transmission gear 3, and two rollers 5 respectively coaxially connected to the two meshing gears 4, a diameter of the meshing gear 4 and a diameter of the roller 5 are both greater than a diameter of the transmission gear 3, the diameter of the roller 5 is smaller than that of the meshing gear 4, the first hand chain wheel 2 is arranged on one side, away from the second panel 102, of the first panel 101, the transmission gear 3, the meshing gear 4 and the roller 5 are arranged on one side, facing the second panel 102, of the first panel 101, the side, facing the first panel 101, of the second panel 102 is provided with two supporting wheels 6, the positions of the two supporting wheels 6 correspond to the positions of the two rollers 5 respectively, and each roller 5 and each supporting wheel 6 are lapped on the I-shaped steel 17 so that the hand buggy can move along the guide direction of the I-shaped steel 17; vertical board 8 includes first connecting portion 801 and the second connecting portion 802 that is connected with first connecting portion 801, second connecting portion 802 is located the below of first connecting portion 801, vertical pole 11 sets up to two and be parallel to each other, the first connecting portion 801 of two vertical boards 8 all overlaps and is established on two connecting rods 103, and the first connecting portion 801 of two vertical boards 8 all overlaps and is established on two connecting rods 103, two second connecting portions 802 all with chain block body 9 fixed connection, be equipped with straight-bar 11 between two first connecting portions 801, the both ends of straight-bar 11 are connected with two first connecting portions 801 respectively, rotationally be provided with first sprocket 10 on the straight-bar 11, straight-bar 11 and first sprocket 10 all are located between two connecting rods 103. The chain block body 9 is arranged on the second connecting portion 802, the chain block body 9 comprises a shell 901, a transmission shaft 902, a second chain wheel 903 and a hoisting chain wheel 905, a second chain 904 and a hoisting chain 906, the side portions of the two second connecting portions 802 are provided with recessed portions used for placing the chain block body 9, a second chain wheel 12 is connected between the two second connecting portions 802, the position of the second chain wheel 12 is lower than that of the chain block body 9, and the hoisting end of the hoisting chain wheel 906 sequentially passes through the hoisting chain wheel 905, the second chain wheel 12 and the first chain wheel 10. The axes of the first sprocket 10, the second sprocket 12, the first hand sprocket 2, the second hand sprocket 903, the jack sprocket 905 and the drive shaft 902 are all parallel to each other. The hoisting chain wheel 905, the first chain wheel 10 and the second chain wheel 12 are all provided with a cross chain guide groove 13 for the hoisting chain 906 to extend into. Be equipped with on chain block body 9 and be connected with two second connecting portion 802 respectively, and two baffles 14 that are parallel to each other, transmission shaft 902 runs through two baffles 14, second hand sprocket 903 and reduction gears are located the one side that two baffles 14 deviate from each other respectively, jacksprocket 905 and jackchain 906 set up between two baffles 14, casing 901 is including being used for the cover to establish the preceding shell of second hand sprocket 903 and being used for the cover to establish reduction gears's backshell, preceding shell and backshell are all fixed on baffle 14, and still be equipped with on the preceding shell and be used for supplying the bar mouth 15 that second hand chain 904 stretches out. Guide pulleys 16 for guiding the hoist chain 906 are provided between the two partition plates 14, between the two first connecting portions 801, and between the two second connecting portions 802, respectively.

So set up, chain block body 9 self does not occupy the space of the first connecting portion 801 of vertical board 8, and hoisting chain 906 can lift the heavy object to effective space, receives the space restriction little, lifts by crane the heavy object easily, also obtains effective utilization to the workshop.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The utility model provides a plurality of schemes contain the basic scheme of itself, mutual independence to restrict each other, but it also can combine each other under the condition of not conflicting, reaches a plurality of effects and realizes jointly.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A low headroom chain block, comprising:

hand-pulling sports car, including being used for supplying support frame (1) that outside guide rail stretched into, setting transmission assembly on support frame (1), support frame (1) is including first panel (101), second panel (102) that are parallel to each other and being used for connecting rod (103) of first panel (101) and second panel (102), transmission assembly includes first hand sprocket (2), set up first hand chain (7) on first hand sprocket (2), with drive gear (3) of first hand sprocket (2) coaxial coupling, respectively with two meshing gears (4) of the both sides intermeshing of drive gear (3) and respectively with two gyro wheels (5) of meshing gear (4) coaxial coupling, first hand sprocket (2) set up in one side that first panel (101) deviates from second panel (102), the transmission gear (3), the meshing gear (4) and the idler wheels (5) are all arranged on one side, facing the second panel (102), of the first panel (101), two supporting wheels (6) are arranged on the side, facing the first panel (101), of the second panel (102), the positions of the two supporting wheels (6) correspond to the positions of the two idler wheels (5), and each idler wheel (5) and each supporting wheel (6) are lapped on the external guide rail so that the hand buggy can move along the guide direction of the external guide rail;

the vertical plate (8) comprises a first connecting part (801) and a second connecting part (802) connected with the first connecting part (801), the first connecting part (801) is sleeved on the connecting rod (103), a first chain wheel (10) is rotatably arranged on the first connecting part (801), and the second connecting part (802) is positioned below the first connecting part (801);

a chain block body (9) arranged on the second connecting part (802), wherein the chain block body (9) comprises a shell (901) fixed relative to the second connecting part (802), a transmission shaft (902) arranged in the shell (901), a second chain wheel (903) and a hoisting chain wheel (905) arranged on the transmission shaft (902), a second chain (904) matched with the second chain wheel (903), and a hoisting chain (906) matched with the hoisting chain wheel (905), the power of the second hand chain wheel (903) is transmitted to the hoisting chain wheel (905) after being reduced by the speed reducing mechanism, the hoisting chain (906) comprises a fixed end and a hoisting end used for hoisting a heavy object, the hoisting end sequentially passes through the hoisting chain wheel (905), the first chain wheel (10) is matched with the first chain wheel and the first chain wheel, and a lifting hook is arranged below the hoisting end.

2. The low clearance chain block as claimed in claim 1, wherein the first panel (101) and the second panel (102) are both vertically disposed and parallel to each other, the connecting rod (103) and the vertical plate (8) are both disposed in two, the two connecting rods (103) and the two vertical plates (8) are respectively parallel to each other, the first connecting portions (801) of the two vertical plates (8) are both sleeved on the two connecting rods (103), and the two second connecting portions (802) are both fixedly connected with the chain block body (9).

3. The low headroom chain block of claim 2, wherein a straight rod (11) is disposed between the two first connecting portions (801), two ends of the straight rod (11) are respectively connected to the two first connecting portions (801), the first sprocket (10) is rotatably sleeved on the straight rod (11), and the straight rod (11) and the first sprocket (10) are both disposed between the two connecting rods (103).

4. A low clearance chain block as claimed in claim 2, characterized in that the side of the two second connecting portions (802) are each provided with a recess for placing the chain block body (9), and a second chain wheel (12) is connected between the two second connecting portions (802), the position of the second chain wheel (12) is lower than the position of the chain block body (9), the hoisting end of the hoisting chain (906) passes through the hoisting chain wheel (905), the second chain wheel (12) and the first chain wheel (10) in turn.

5. A low headroom chain block as claimed in claim 4, characterized in that the axes of the first sprocket (10), the second sprocket (12), the first hand sprocket (2), the second hand sprocket (903), the lifting sprocket (905) and the transmission shaft (902) are all parallel to each other.

6. A low clearance chain block as claimed in claim 4, wherein the hoisting chain wheel (905), the first chain wheel (10) and the second chain wheel (12) are provided with a cross chain guide slot (13) for the hoisting chain (906) to extend into to prevent the hoisting chain (906) from rotating relative to the hoisting chain wheel (905) or the first chain wheel (10) or the second chain wheel (12).

7. A low clearance chain block as claimed in claim 2, wherein the chain block body (9) is provided with two partitions (14) which are respectively connected to the two second connection portions (802) and are parallel to each other, the transmission shaft (902) penetrates through the two clapboards (14), the second hand sprocket (903) and the speed reducing mechanism are respectively positioned on one side of the two clapboards (14) which are mutually deviated, said lifting sprocket (905) and said lifting chain (906) being arranged between two of said bulkheads (14), the shell (901) comprises a front shell used for covering the second hand chain wheel (903) and a rear shell used for covering the speed reducing mechanism, the front shell and the rear shell are both fixed on the partition plate (14), and the front shell is also provided with a strip-shaped opening (15) for the second bracelet (904) to extend out.

8. Low headroom chain block according to claim 7, wherein guide wheels (16) for guiding the hoisting chain (906) are provided between two partitions (14), two first connections (801) and two second connections (802), respectively.

9. The low clearance chain block as claimed in claim 1, wherein the external guide rail is an i-beam (17), and both sides of the i-beam (17) are extended under the roller (5) and the supporting wheel (6), respectively.

10. Low clearance chain block according to claim 1, characterized in that the diameter of the meshing gear (4) and the diameter of the roller (5) are both larger than the diameter of the transmission gear (3), and the diameter of the roller (5) is smaller than the diameter of the meshing gear (4).

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