CN217558833U - Crown block brake device - Google Patents

Abstract

A crown block braking device comprising: a brake wheel; a brake pad; the normally open system is used for keeping the brake shoe and the brake wheel in a separated state; the brake force system, the brake force system is including power device and many link assemblies, many link assemblies are including first action pole, the second action pole, the pull rod, the push rod, bull stick and well connecting rod, first action pole is connected with a set of brake shoe of keeping away from power device, the second action pole is connected with a set of brake shoe that is close to power device, the pull rod is located the below of push rod, the both sides of push rod are located with power device branch to the bull stick, the pull rod, bull stick and push rod are head and the tail connection in proper order and are formed with the tripod structure, the one end of well connecting rod is connected with first action pole, the other end of well connecting rod is connected with the tie point of pull rod and bull stick, power device is including telescopic power take off end, power take off end is connected with the tie point of pull rod and push rod. The utility model has the advantages of reasonable design, simple to use, the braking is reliable.

Description

Crown block brake device

Technical Field

The utility model relates to a crown block equipment technical field, more specifically say, in particular to crown block arresting gear.

Background

The overhead traveling crane apparatus is a hoisting apparatus widely used in the industrial field, and can hoist and transfer a cargo along a set trajectory. In the prior art, a crown block device comprises a rail (overhead) and a vehicle body (the vehicle body can be divided into a cart or a trolley), and the vehicle body can move on the rail. The vehicle body is provided with a power system and a brake system, the power system provides driving force to enable the vehicle body to travel on the track, and the brake system provides braking force to enable the vehicle body to brake or keep a static state.

For a braking system adopted by a crown block device, a hydraulic brake is generally adopted, and in the prior art, a hydraulic push rod brake is generally adopted as the hydraulic brake, and two sets of hydraulic brakes are provided and work independently and are controlled independently.

In the overhead travelling crane, various options are available for the brakes of large and small vehicles, which are mainly determined by the use environment. Generally, the national standard generally adopts a hydraulic push rod normally closed brake, and the brake and an electric motor synchronously work, namely the electric motor is powered on, the brake is opened, the electric motor is powered off, and the brake is clamped. This mechanism of synchronous operation of the brake and the electric motor presents several drawbacks: 1. in the running process of the big trolley and the small trolley, the crown block worker operation controller returns to zero (a control instruction, namely the big trolley or the small trolley stops running), at the moment, the electric brake is released by the motor, the big trolley or the small trolley can stop immediately, and the lifting hook and the hanging object can swing under the action of inertia; 2. after the motor loses power, the brake responds to the band-type brake immediately, so that larger mechanical impact can be caused, and the service life of equipment is influenced; 3. the braking torque of the normally closed brake is not easy to adjust and is adjusted too tightly, which is not beneficial to crown block worker operation, and is adjusted too loosely and can not be braked, especially in the production operation of small electric furnaces, the steel is required to be cast by mould, the 100% reliability of the braking torque of large and small cars is required to be ensured, and the car body can not be braked, which brings great potential safety hazard; 4. in the working process of the brake, friction and heating exist between the brake wheel and the shoe, the brake shoe is greatly abraded, the brake wheel is greatly influenced by expansion caused by heat and contraction caused by cold, the brake torque is not easy to adjust or needs to be adjusted frequently, and inconvenience is brought to crown operators for operation and inspection; 5. the braking system consists of a motor, a brake and a plurality of auxiliary parts, and has complex system structure, high equipment cost and difficult maintenance.

SUMMERY OF THE UTILITY MODEL

In summary, how to provide a crown block braking device with reliable braking and simple structure becomes a problem to be solved urgently by those skilled in the art.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a crown block arresting gear, this crown block arresting gear includes:

a brake wheel rotating with the wheel shaft of the crown block;

the brake pads are in friction contact with the brake wheel, two groups of brake pads are arranged, and the two brake pads are respectively arranged on two sides of the brake wheel and are symmetrical with the rotation center of the brake wheel;

a normally open system for maintaining the brake pad and the brake wheel in a separated state, wherein the normally open system is in power fit with the brake pad and is used for applying normally open acting force separated from the brake wheel to the brake pad;

the brake shoe brake device is characterized by comprising a normally open acting force, a brake shoe and a brake wheel contact brake force system, wherein the brake force system comprises a power device and a multi-link assembly, the multi-link assembly comprises a first acting rod, a second acting rod, a pull rod, a push rod, a rotating rod and a middle connecting rod, the first acting rod is far away from the power device, the brake shoe is connected, the second acting rod is close to the power device, the brake shoe is connected, the pull rod is located below the push rod, the rotating rod is respectively arranged on two sides of the push rod, the pull rod, the rotating rod and the push rod are sequentially connected end to form a tripod structure, one end of the middle connecting rod is connected with the first acting rod, the other end of the middle connecting rod is connected with a connecting point of the pull rod and the rotating rod, the power device comprises a telescopic power output end, and the power output end is connected with the connecting point of the pull rod and the connecting point of the push rod.

Preferably, in the crown block braking device provided by the present invention, a bottom end of the first actuating rod is hinged to the brake wheel, and a top end of the first actuating rod is hinged to one end of the middle connecting rod; the bottom end of the second action rod is hinged relative to the brake wheel, and the top end of the second action rod is hinged with a connecting point of the push rod and the rotating rod; the top end of the power device is a power output end, and the bottom end of the power device is hinged to the brake wheel.

Preferably, in the crown block braking device provided by the present invention, the brake pad is connected to the rod body of the first actuating rod and is disposed near the bottom end of the first actuating rod; and the other group of brake pads are connected with the rod body of the second action rod and are arranged close to the bottom end of the second action rod.

Preferably, in the utility model provides an in the overhead traveling crane arresting gear, normally open the system including compress set up in first action pole and normally open drive spring between the second action pole, normally open drive spring's both ends respectively with first action pole and second action pole power contact, be used for right first action pole and the second action pole is applyed normally open the effort.

Preferably, in the crown block braking device provided by the present invention, a telescopic limiting rod is provided between the first actuating rod and the second actuating rod, and the normally open driving spring is sleeved on the limiting rod.

Preferably, the utility model provides an among the overhead traveling crane arresting gear, still including be used for overcoming normally open effort, and through first action bars and the drive of second action bars the brake shoe with the auxiliary brake system of braked wheel contact.

Preferably, in the crown block braking device provided by the present invention, the auxiliary braking system includes a traction mechanism connected to a connection point of the push rod and the pull rod; the traction mechanism is a rope or a pull rod.

Preferably, in the utility model provides an overhead traveling crane arresting gear, connecting rod and auxiliary power device in auxiliary brake system is including auxiliary pull rod, auxiliary push rod, supplementary bull stick, the auxiliary pull rod is located auxiliary push rod's top, the bull stick with auxiliary power device divides to locate auxiliary pull rod's both sides, auxiliary pull rod the bull stick with auxiliary push rod end to end connects in proper order and is formed with the tripod structure, in the supplementary one end of connecting rod with the second action lever is connected, in the supplementary other end of connecting rod with auxiliary pull rod with the tie point of auxiliary bull stick is connected, auxiliary power device is including the stay cord structure, the one end of stay cord structure with auxiliary pull rod and auxiliary push rod's tie point is connected.

Preferably, in the utility model provides an overhead traveling crane arresting gear, auxiliary power device is including footboard and directive wheel, the one end of footboard for the braked wheel is articulated, the other end of stay cord structure with the footboard is connected.

Preferably, in the utility model provides an overhead traveling crane arresting gear, auxiliary power device and power device branch is located the both sides of braked wheel, auxiliary power device set up in one side of first action pole, set up in one side of second action pole.

Compared with the prior art, the beneficial effects of this application are as follows:

according to the above, the utility model provides a crown block arresting gear, this crown block arresting gear includes: a brake wheel rotating with the wheel shaft of the crown block; the brake shoe blocks are in friction contact with the brake wheel, two groups of brake shoe blocks are arranged, and the two brake shoe blocks are respectively arranged on two sides of the brake wheel and are symmetrical with the rotation center of the brake wheel; the normally open system is in power fit with the brake shoe and is used for applying a normally open acting force separated from the brake wheel to the brake shoe; a braking force system for overcoming normally open effort, drive brake shoe and braked wheel contact, braking force system is including power device and many link assembly, many link assembly is including first action pole, the second action pole, the pull rod, the push rod, bull stick and well connecting rod, first action pole is connected with a set of brake shoe of keeping away from power device, the second action pole is connected with a set of brake shoe that is close to power device, the pull rod is located the below of push rod, the both sides of push rod are located with power device branch to the bull stick, the pull rod, bull stick and push rod are end to end connected in proper order and are formed with the tripod structure, the one end and the first action pole of well connecting rod are connected, the other end and the tie point of pull rod and bull stick of well connecting rod are connected, power device is including telescopic power take off, power take off end is connected with the tie point of pull rod and push rod. Through the structure design, the utility model provides an overhead traveling crane arresting gear has structural design rationally, simple to use, advantages such as braking is reliable.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of a crown block braking device in a first structural form in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an overhead traveling crane braking device in a second structural form according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a crown block braking device in a third structural form in the embodiment of the present invention.

The correspondence between the component names and reference numerals in fig. 1 to 3 is:

a brake wheel 1, a brake shoe 2, a first action rod 3, a second action rod 4, a pull rod 5, a push rod 6, a rotating rod 7, a middle connecting rod 8, a power device 9, a normally open drive spring 10, a limiting rod 11,

The traction mechanism 12, an auxiliary pull rod 13, an auxiliary push rod 14, an auxiliary rotating rod 15, an auxiliary middle connecting rod 16, an auxiliary power device 17 and a steering wheel 18.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For example, shown or described

Features that are part of one embodiment can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.

In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

Referring to fig. 1 to fig. 3, fig. 1 is a schematic structural diagram of a crown block braking device of a first structural form according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of an overhead traveling crane braking device of a second structural form in the embodiment of the present invention; fig. 3 is a schematic structural diagram of a crown block braking device in a third structural form in the embodiment of the present invention.

The utility model provides a crown block arresting gear is applicable to the braking of cart or dolly in the crown block equipment, and this braking includes two kinds of braking methods of mechanical braking (preferably hydraulic braking) and non-mechanical braking (manpower operation braking), and wherein, mechanical braking and non-mechanical braking are worked alone, can both realize the braking of crown block.

In prior art, overhead traveling crane equipment is including the track and the automobile body (cart or dolly) that traveles on the track, the utility model provides an overhead traveling crane arresting gear assembles on overhead traveling crane equipment's automobile body to realize the braking of automobile body.

Specifically, the crown block braking device comprises a brake wheel 1 and a brake shoe 2, the brake wheel 1 can be of a disc structure or a drum structure, the brake shoe 2 can move relative to the brake wheel 1, when the brake shoe 2 is separated from the brake wheel 1, the braking effect on the vehicle body is completely lost, after the brake shoe 2 is in contact with the brake wheel 1, the braking on the vehicle body is started, and along with the increase of the pressure of the brake shoe 2 on the brake wheel 1, the braking force is increased more and more.

The brake wheel 1 is mounted to a wheel shaft of a vehicle body and can rotate together with the wheel shaft of an overhead traveling crane (vehicle body), and a braking effect can be obtained when the brake wheel 1 is in contact with the brake pad 2.

The brake pads 2 are moveable relative to the brake wheel 1, and frictional contact between the brake pads 2 and the brake wheel 1 is achieved. In order to guarantee the braking effect to and the stationarity of automobile body operation when improving the braking, the utility model discloses set up braking shoe 2 into two sets ofly, as shown in fig. 1, two sets of braking shoes 2 divide and establish the left and right sides at braked wheel 1, and, two braking shoes 2 set up with the rotation central symmetry of braked wheel 1.

The utility model provides a crown block arresting gear is open arresting gear always, does not have under the condition of any external force input promptly, and crown block arresting gear is normally opened (opposite with traditional crown block braking equipment braking mode, traditional crown block braking equipment is closed arresting gear always). Therefore, the utility model provides a normally open system for realizing that brake shoe 2 keeps the disconnect-state with braked wheel 1, normally open system and 2 power fit of brake shoe, be used for to brake shoe 2 exert with the normally open effort of braked wheel 1 separation, when brake shoe 2 receives the normally open effort that normally open system provided alone, brake shoe 2 keeps the disconnect-state with braked wheel 1.

If braking is to be achieved, then the brake pads 2 must be in contact (frictional contact) with the brake wheel 1, and therefore, the utility model discloses a braking force system for overcoming normally open effort, driving the brake pads 2 and being in contact with the brake wheel 1 is also provided. Braking force system can provide the effort that is reverse with normally open effort to brake shoe 2, along with the increase of this effort, overcomes normally open effort gradually, and when this effort was greater than normally open effort, brake shoe 2 just can move and with braked wheel 1 contact, and along with the continuation increase of effort, the frictional force between brake shoe 2 and the braked wheel 1 is just also bigger, and braking effect is just more obvious.

Specifically, the braking force system is structured as follows: the multi-link mechanism comprises a power device 9 (used for providing power) and a multi-link assembly (used for transmitting power), wherein the multi-link assembly comprises a first action rod 3, a second action rod 4, a pull rod 5, a push rod 6, a rotating rod 7 and a middle link 8, and the rods are all of hard rod structures, preferably metal rods, and further metal solid rods.

As shown in fig. 1, in one embodiment of the present invention, the power device 9 is disposed on one side of the brake wheel 1 (including the brake shoe 2), preferably on the right side. The first actuating lever 3 is connected to a set of brake pads 2 remote from the power unit 9 (the left brake pad 2 in fig. 1), and the second actuating lever 4 is connected to a set of brake pads 2 close to the power unit 9 (the right brake pad 2 in fig. 1). The brake pad 2 and the operating levers (the first operating lever 3 and the second operating lever 4) are in a rigid connection structure, and the brake pad 2 can move together with the operating levers. The utility model discloses in, first action bars 3 and second action bars 4 length are the same, and the bottom of two action bars is located same level, the top of two action bars is located same level. Of course, when the bottom ends of the two action bars are located at the same horizontal level, the top ends of the two action bars can be arranged in a height mode (i.e. the lengths of the first action bar 3 and the second action bar 4 are different) according to the field situation. When the brake shoe 2 is normally open, the first actuating lever 3 and the second actuating lever 4 may be parallel or have a certain included angle (the included angle is preferably 5-10 degrees, which cannot be too large). The bottom end of the first actuating rod 3 is hinged relative to the brake wheel 1, and the bottom end of the second actuating rod 4 is hinged relative to the brake wheel 1, and is not directly hinged on the brake wheel 1, but the hinge point is fixed relative to the brake wheel 1. Specifically, the utility model discloses set up articulated seat on the fixed body construction for braked wheel 1, first action pole 3 and second action pole 4 are all installed on articulated seat.

Pull rod 5 is the utility model discloses in to the tensile member of 3 transmission of first action bars when braking, push rod 6 is the utility model discloses in to the member of 4 transmission thrust of second action bars when braking, under pull rod 5 and 6 combined action of push rod, just can realize that first action bar 3 and second action bar 4 draw close each other like this, make brake shoe 2 and the realization braking of the contact of braked wheel 1 draw close the in-process. Specifically, pull rod 5 is located the below of push rod 6, and the both sides of push rod 6 are located to bull stick 7 and power device 9 branch, and pull rod 5, bull stick 7 and push rod 6 end to end connection in proper order and are formed with the tripod structure, and well connecting rod 8 sets up in the outside of tripod structure and is located the left side of tripod structure (establishes the both sides at the tripod structure with power device 9 branch), and the one end of well connecting rod 8 is connected with first action pole 3 (specifically is articulated with the top of first action pole 3), and the other end of well connecting rod 8 is connected (specifically is articulated) with the tie point of pull rod 5 and bull stick 7. After the multi-link assembly is assembled according to the structure, the connecting point of the pull rod 5 and the push rod 6 in the tripod structure is pushed upwards, the push rod 6 can push the second action rod 4 to act, and the pull rod 5 can pull the first action rod 3 to act, so that the first action rod 3 and the second action rod 4 are close to each other.

Power device 9 is including telescopic power take off the utility model discloses in, power device 9 is the pneumatic cylinder, and power take off end is the hydraulic cylinder pole, and power take off end is connected (articulated) with the tie point of pull rod 5 and push rod 6, passes through power take off end by power device 9 and to three hinge structure output power, accomplish the braking.

Specifically, the top end of the first action rod 3 is hinged to one end of the middle connecting rod 8, the top end of the second action rod 4 is hinged to a connecting point of the push rod 6 and the rotating rod 7, the top end of the power device 9 is a power output end, and the bottom end of the power device 9 is hinged to the brake wheel 1 (namely, a hinged seat is arranged at a certain fixed point of the vehicle body relative to the brake wheel 1, and the brake wheel 1 is mounted on the hinged seat).

Further, the brake pads 2 are connected with the shaft of the first actuating rod 3 and are arranged near the bottom end of the first actuating rod 3, and the brake pads 2 of another group are connected with the shaft of the second actuating rod 4 and are arranged near the bottom end of the second actuating rod 4. Above-mentioned structure is similar to the lever, can effectively reduce like this the utility model discloses to the requirement of 9 output power of power device, promptly: the requirement of higher braking force can be met only by outputting smaller acting force.

The utility model discloses in, normally open the concrete structure of system as follows: the normally-open type driving device comprises a normally-open driving spring 10 which is arranged between a first action rod 3 and a second action rod 4 in a compressed mode, wherein the normally-open driving spring 10 is arranged in a compressed mode, and two ends of the normally-open driving spring 10 are in power contact with the first action rod 3 and the second action rod 4 respectively and are used for applying normally-open acting force to the first action rod 3 and the second action rod 4. Preferably, the normally open drive spring 10 is disposed above the brake wheel 1 and near the apexes of the first actuating lever 3 and the second actuating lever 4. In other embodiments, as shown in fig. 2, one end of the normally open driving spring 10 abuts against the second actuating rod 4, and the other end of the normally open driving spring 10 is fixed on the limiting rod 11, for example, the middle part of the limiting rod 11.

In order to carry on spacingly to normally opening drive spring 10, the utility model discloses be provided with telescopic gag lever post 11 between first action pole 3 and second action pole 4, normally open drive spring 10 cover and locate gag lever post 11 on, by gag lever post 11 to normally opening drive spring 10 extend and compression deformation carry on spacingly.

In the structural design, the utility model provides a braking force system to realize mechanical braking, in order to avoid taking place mechanical failure, perhaps the problem of braking inefficacy appears under the special circumstances such as power failure, the utility model also provides an auxiliary brake system who is used for overcoming normally open effort and through first action pole 3 and second action pole 4 drive brake shoe 2 and braked wheel 1 contact, auxiliary brake system does the utility model provides a non-mechanical braking, the manpower operation braking promptly.

The utility model discloses in, supplementary braking system is including two kinds of structural style:

the first structural form is as follows: the brake device comprises a traction mechanism 12 connected with a connection point of a push rod 6 and a pull rod 5, wherein the traction mechanism 12 is a rope or a pull rod 5, in the embodiment, the rope or the pull rod 5 is connected with the connection point of the push rod 6 and the pull rod 5, and as shown in fig. 1, the rope or the pull rod 5 applies an upward acting force to draw the first action rod 3 and the second action rod 4 together to complete braking.

The second structure is as follows: the auxiliary brake system comprises an auxiliary pull rod 13, an auxiliary push rod 14, an auxiliary rotating rod 15, an auxiliary middle connecting rod 16 and an auxiliary power device 17. The auxiliary pull rod 13, the auxiliary push rod 14, the auxiliary rotating rod 15 and the auxiliary middle connecting rod 16 are all metal rod pieces, and a set of multi-connecting-rod transmission system which can independently move relative to the multi-connecting-rod assembly can be constructed by the auxiliary pull rod 13, the auxiliary push rod 14, the auxiliary rotating rod 15 and the auxiliary middle connecting rod 16.

Auxiliary power device 17 is then one set of device by artificial operation input "power", the utility model discloses in, as shown in fig. 1, auxiliary pull rod 13 is located auxiliary push rod 14's top, the both sides of auxiliary pull rod 13 are located with auxiliary power device 17 branch to bull stick 7, auxiliary pull rod 13, bull stick 7 and auxiliary push rod 14 end to end connection in proper order and be formed with the tripod structure, the one end and the second action pole 4 of connecting rod 16 are connected in the assistance, the other end and the tie point of auxiliary pull rod 13 and auxiliary bull stick 15 of connecting rod 16 are connected in the assistance, auxiliary power device 17 is including the stay cord structure, the one end and the tie point of auxiliary pull rod 13 and auxiliary push rod 14 of stay cord structure are connected. In the above-described structure, applying a force (downward force) to the connection point of the auxiliary rod 13 and the auxiliary push rod 14 can move the first actuating rod 3 and the second actuating rod 4 toward each other, thereby achieving braking.

Specifically, the auxiliary power device 17 includes a pedal and a steering wheel 18, the steering wheel 18 can be set according to actual conditions, one end of the pedal is hinged with the brake wheel 1, the other end of the rope pulling structure is connected with the pedal, and when the pedal is stepped on by a foot, the pedal is operated, so that the rope pulling structure can be pulled downwards, and thus the movement of the tripod structure (composed of the auxiliary pull rod 13, the rotating rod 7 and the auxiliary push rod 14) is realized.

Of course, the utility model discloses can replace the footboard into manual brake structure (similar with the bicycle brake among the prior art), adopt manual mode to realize the brake.

Further, the auxiliary power unit 17 and the power unit 9 are provided on both sides of the brake wheel 1, and the auxiliary power unit 17 is provided on one side of the first operating lever 3 and on one side of the second operating lever 4.

According to the above, the utility model provides a crown block arresting gear, this crown block arresting gear includes: a brake wheel 1 rotating together with the wheel shaft of the crown block; the brake shoe blocks 2 can be in frictional contact with the brake wheel 1, two groups of brake shoe blocks 2 are arranged, and the two brake shoe blocks 2 are respectively arranged on two sides of the brake wheel 1 and are symmetrical with the rotation center of the brake wheel 1; the normally open system is used for keeping the brake shoe 2 and the brake wheel 1 in a separated state, is in power fit with the brake shoe 2 and is used for applying a normally open acting force separated from the brake wheel 1 to the brake shoe 2; the braking force system is used for overcoming normally-open acting force and driving a brake shoe 2 to be in contact with a brake wheel 1, and comprises a power device 9 and a multi-link assembly, the multi-link assembly comprises a first action rod 3, a second action rod 4, a pull rod 5, a push rod 6, a rotating rod 7 and a middle connecting rod 8, the first action rod 3 is connected with a group of brake shoes 2 far away from the power device 9, the second action rod 4 is connected with a group of brake shoes 2 close to the power device 9, the pull rod 5 is positioned below the push rod 6, the rotating rod 7 and the power device 9 are respectively arranged on two sides of the push rod 6, the pull rod 5, the rotating rod 7 and the push rod 6 are sequentially connected end to form a tripod structure, one end of the middle connecting rod 8 is connected with the first action rod 3, the other end of the middle connecting rod 8 is connected with a connecting point of the pull rod 5 and the rotating rod 7, the power device 9 comprises a telescopic power output end, and the power output end is connected with connecting points of the pull rod 5 and the push rod 6.

The utility model provides a braking device is used in braking of overhead traveling crane cart, this braking device can prevent that the out of control condition after overhead traveling crane cart, dolly meet with the sudden power failure in the motion process from appearing through new braking structure (new braking mode). The utility model discloses a redesign's arresting gear can solve the unexpected swift current car problem that the overhead traveling crane cart (and dolly) stopper arouses because of any reason effectively, the utility model discloses can realize stably, reliably, braking parking controlled to stop swift current car and arouse the purpose of occurence of failure.

Through the structural analysis to braking equipment among the prior art, because there are a great deal of defects in normal close formula stopper, for example lose the problem out of control behind the electricity, in the use, the utility model discloses reform transform big and small car braking equipment, used the scheme that hydraulic push rod 6 normal open braking structure and service brake combined together, just can still can carry out brake control to the overhead traveling crane after losing the electricity.

Through the structure design, the utility model provides an overhead traveling crane arresting gear has structural design rationally, simple to use, advantages such as braking is reliable. The utility model discloses having successfully been applied to special smelter electric stove overhead traveling crane cart braking control system, having realized the purpose that the stopper reliably parkked, finally obtained the reliable and stable braking system of operation, satisfied the overhead traveling crane and stabilized the production requirement of high yield.

The utility model discloses in, when the brake shoe 2 did not have the effort, the spring that is produced the moment by normally open system struts brake shoe 2. When the power device 9 is powered on, the power device 9 acts to enable each rod piece in the multi-link assembly to perform linkage action, due to the lever action, a plurality of connecting points (for example, a connecting point between the push rod 6 and the pull rod 5, a connecting point between the push rod 6 and the rotating rod 7, and a connecting point between the pull rod 5 and the rotating rod 7) can rotate, the pull rod 5 pulls the left brake shoe 2 to move rightwards to clasp the brake wheel 1, and meanwhile, the push rod 6 pushes the right brake shoe 2 to move leftwards to clasp the brake wheel 1, so that clasping action is formed.

The utility model discloses by the direct power supply of electrical switch, not with the motor linkage, at ordinary times and not work, only electrical switch power transmission just works, forms the band-type brake action. Reliable operation and large braking torque. When needs are braked, power device 9 does not have the circumstances of getting electricity again simultaneously under, the utility model also provides a service brake device. Namely, a lever hinge is added at the connecting point of a push rod 6 and a pull rod 5 of the multi-link assembly to lead the pedal of the cab to be pedaled down, and the connecting point is lifted. The utility model discloses can also improve the service brake scheme. The design that can realize the service brake scheme is more certainly, must pay attention to the chooseing for use of spring model when carrying out structural design, and the spring force reaches for a short time, can not effectively strut the tile, and the spring force is too big, and the foot is stepped on arduously, still can make the band-type brake stroke not enough, and braking torque is not enough.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A crown block braking device, comprising:

a brake wheel (1) rotating together with the wheel shaft of the crown block;

the brake shoe blocks (2) can be in friction contact with the brake wheel, two groups of brake shoe blocks are arranged, and the two brake shoe blocks are respectively arranged on two sides of the brake wheel and are symmetrical with the rotation center of the brake wheel;

a normally open system for maintaining the brake pad and the brake wheel in a separated state, wherein the normally open system is in power fit with the brake pad and is used for applying normally open acting force separated from the brake wheel to the brake pad;

the brake shoe brake device comprises a normally open acting force, a brake shoe and a brake wheel contact brake force system, wherein the brake force system comprises a power device (9) and a multi-link assembly, the multi-link assembly comprises a first acting rod (3), a second acting rod (4), a pull rod (5), a push rod (6), a rotating rod (7) and a middle connecting rod (8), the first acting rod is connected with the brake shoe, the second acting rod is close to the power device, the brake shoe is connected with the pull rod, the pull rod is located below the push rod, the rotating rod is arranged on two sides of the push rod, the pull rod is connected with the rotating rod and the push rod in sequence in an end-to-end manner and is formed with a tripod structure, one end of the middle connecting rod is connected with the first acting rod, the other end of the middle connecting rod is connected with a connecting point of the pull rod and the rotating rod, the power device comprises a telescopic power output end, and the power output end is connected with a connecting point of the pull rod and the push rod.

2. The crown block braking device according to claim 1,

the bottom end of the first action rod is hinged relative to the brake wheel, and the top end of the first action rod is hinged with one end of the middle connecting rod;

the bottom end of the second action rod is hinged relative to the brake wheel, and the top end of the second action rod is hinged with a connecting point of the push rod and the rotating rod;

the top end of the power device is a power output end, and the bottom end of the power device is hinged to the brake wheel.

3. The crown block braking device according to claim 2,

the brake pad is connected with the rod body of the first action rod and is arranged close to the bottom end of the first action rod;

and the other group of brake pads are connected with the rod body of the second action rod and are arranged close to the bottom end of the second action rod.

4. The crown block braking device according to claim 1,

the normally open system comprises a normally open drive spring (10) which is arranged between the first action rod and the second action rod in a compressed mode, and two ends of the normally open drive spring are in power contact with the first action rod and the second action rod respectively and are used for applying normally open acting force to the first action rod and the second action rod.

5. The crown block braking device according to claim 4,

a telescopic limiting rod (11) is arranged between the first action rod and the second action rod, and the normally open drive spring is sleeved on the limiting rod.

6. The crown block braking device according to claim 1,

the auxiliary brake system is used for overcoming the normally open acting force and driving the brake shoe to be in contact with the brake wheel through the first action rod and the second action rod.

7. The crown block braking device according to claim 6,

the auxiliary braking system comprises a traction mechanism (12) connected with a connecting point of the push rod and the pull rod;

the traction mechanism is a rope or a pull rod.

8. The crown block braking device according to claim 6,

the auxiliary brake system is including auxiliary pull rod (13), auxiliary push rod (14), supplementary bull stick (15), supplementary well connecting rod (16) and auxiliary power device (17), the auxiliary pull rod is located auxiliary push rod's top, the bull stick with auxiliary power device divides to locate auxiliary pull rod's both sides, the auxiliary pull rod the bull stick and auxiliary push rod end to end connects in proper order and is formed with the tripod structure, in supplementary the one end of connecting rod with the second action bars is connected, in supplementary the other end of connecting rod with the auxiliary pull rod with the tie point of auxiliary bull stick is connected, auxiliary power device is including the stay cord structure, the one end of stay cord structure with auxiliary pull rod and auxiliary push rod's tie point is connected.

9. The crown block braking device according to claim 8,

the auxiliary power device comprises a pedal and a steering wheel (18), one end of the pedal is hinged relative to the brake wheel, and the other end of the pull rope structure is connected with the pedal.

10. The crown block braking device according to claim 9,

the auxiliary power device and the power device are respectively arranged on two sides of the brake wheel, the auxiliary power device is arranged on one side of the first action rod, and the auxiliary power device is arranged on one side of the second action rod.

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