Brake mechanism for crane

Abstract

The utility model relates to the technical field of crane devices, and particularly discloses a brake mechanism for a crane, which is characterized in that a base is fixed at the end part of a travelling mechanism of the crane, and the bottom of the base is provided with a clamping groove matched with a track in a sliding and clamping manner; the brake pieces located on the two sides of the track respectively comprise a rectangular frame, short beams fixedly connected to the two ends of the rectangular frame in a butt joint mode, a shaft rod with the inner end rotationally sleeved with the middle of the rectangular frame and the outer end sleeved with the side wall of the clamping groove, a long beam with the middle movably clamped in the rectangular frame and rotationally connected with the shaft rod in a sleeved mode and brake blocks fixed to the outer ends of the short beams and the long beam. The traction piece comprises a vertical rod which is slidably sleeved with the base in the vertical direction, a double-end lug fixed to the bottom end of the vertical rod and a connecting rod with the top end hinged to the front end and the rear end of the double-end lug, and the bottom end of the connecting rod is hinged to the top ends of the short beam and the long beam on the upper side; the driving piece arranged on the top surface of the base is used for driving the vertical rod to vertically move by utilizing a screw-nut driving structure; and the problem that the brake mechanism of the portal crane is inconvenient to quickly brake and release is well solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to crane device technical field, concretely is a brake mechanism for crane. BACKGROUND

[0002] The crane refers to the multi -action hoist machinery of vertical promotion and horizontal transport heavy object in a certain range. Among them, the portal crane is one of the crane, is widely used in the outdoor freight yard, material yard freight, bulk cargo handling operation; its metal structure like door frame, carries the main beam below installation two support foot, the walking mechanism at the support foot can walk directly on the track on the ground, the main beam both ends can have the outer stretch cantilever beam.

[0003] In order to avoid under the action of strong wind, the outdoor portal crane of non - working state along the track sliding, generally needs brake mechanism to fix the support foot of portal crane and track. The commonly used brake mechanism is the rail clamp, and the existing rail clamp commonly adopts manual mode, for the manual rail clamp, multiple bolts are used to drive two clamping blocks to move and abut against the side of the track. In actual use, the linkage between the two clamping blocks is poor, and it is often necessary to loosen and tighten separately, that is, it is inconvenient to quickly brake and release. UTILITY MODEL CONTENTS

[0004] The utility model discloses a brake mechanism for crane, which solves the problem of inconvenient quick braking and releasing of the brake mechanism of the current portal crane.

[0005] To achieve the above object, the utility model provides the following technical scheme: a brake mechanism for crane, the base is fixed to the end of the walking mechanism of crane, the base bottom is equipped with the clamping groove matched with the sliding clamping of track. The brake member on both sides of the track includes a rectangular frame, a short beam fixedly connected to both ends of the rectangular frame, a shaft rod rotatably sleeved in the middle part of the rectangular frame and sleeved on the side wall of the clamping groove, a long beam movably clamped in the rectangular frame and rotatably sleeved with the shaft rod, and a brake block fixed to the outer end of the short beam and the long beam. The driving member arranged on the top surface of the base is used to drive the vertical movement of the vertical rod by using the screw nut driving structure.

[0006] Preferably, the base includes a fixed seat fixedly connected to the end of the walking mechanism of crane and a box type structure fixed to the end of the fixed seat, the clamping groove is arranged at the middle position of the bottom of the box type structure, the shaft sleeve rotatably sleeved with the outer end of the shaft rod is sleeved on both side walls of the box type structure, and the linear bearing slidably sleeved with the vertical rod is sleeved on the top surface of the box type structure.

[0007] Preferably, a lead screw is fixedly mounted on the top surface of the box structure between the two linear bearings. The driving component includes a strip with both ends fixed to the top of the vertical rod, a threaded sleeve with its bottom end rotatably mounted in the middle of the strip and threadedly connected to the lead screw, and a handle fixed radially to the outer peripheral wall of the threaded sleeve.

[0008] Preferably, the top of the vertical rod is fixedly connected to a threaded joint, and both ends of the strip are provided with through holes. After the threaded joint passes through the through holes, a locking nut is threaded onto it.

[0009] Preferably, the top of the outer side wall of the upper short beam and the top of the outer side wall of the long beam are respectively fitted with short shafts that are matched with the bottom end of the connecting rod when rotated into a sleeve.

[0010] Preferably, the brake block has a drag-increasing layer on its surface facing the track wing.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model relates to a braking mechanism for a crane, which facilitates the vertical movement of the vertical rod through a driving component, thereby facilitating the opening and closing of the brake component of the scissor-type structure, so as to realize rapid braking and release operations on the gantry crane braking mechanism. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0014] Figure 2 This is a three-dimensional structural diagram of the braking component of this utility model;

[0015] Figure 3 This is a three-dimensional structural diagram of the tensioning component of this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of the driving component of this utility model.

[0017] In the diagram: 1-Base; 1.1-Fixed seat; 1.2-Box structure; 1.2.1-Slot; 1.3-Shaft sleeve; 1.4-Linear bearing;

[0018] 2-Brake component; 2.1-Rectangular frame; 2.2-Short beam; 2.3-Shaft; 2.4-Long beam; 2.5-Brake block; 2.6-Short shaft; 2.7-Drag layer;

[0019] 3-Pulley; 3.1-Double-headed lug; 3.2-Connecting rod; 3.3-Vertical rod; 3.4-Threaded connector;

[0020] 4-Drive component; 4.1-Strip; 4.1.1-Through hole; 4.2-Threaded sleeve; 4.3-Handle;

[0021] 5-Screw;

[0022] 6- Lock nut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution: a braking mechanism for a crane, wherein the base 1 includes a fixed seat 1.1 fixedly connected to the end of the crane traveling mechanism and a box-type structure 1.2 fixed to the end of the fixed seat 1.1. A slot 1.2.1 is located at the middle position of the bottom of the box-type structure 1.2. Bushings 1.3 are fitted on both side walls of the box-type structure 1.2. Linear bearings 1.4 are respectively fitted on the top surface of the box-type structure 1.2 corresponding to the two sides of the slot 1.2.1. The slot 1.2.1 is slidably engaged with the I-shaped rail.

[0025] Braking components 2 are arranged in pairs on both sides of the inner cavity of the slot 1.2.1, and are located on both sides of the I-shaped track. Each braking component 2 includes a rectangular frame 2.1, short beams 2.2 fixedly connected to the top and bottom ends of the rectangular frame 2.1, a shaft 2.3 whose inner end is rotatably fitted into the middle of the rectangular frame 2.1 and whose outer end is rotatably fitted into the bushing 1.3, a long beam 2.4 whose middle part is movably engaged within the rectangular frame 2.1 and rotatably fitted into the shaft 2.3, and brake blocks 2.5 fixed to the outer ends of the short beams 2.2 and 2.4. The top of the outer wall of the upper short beam 2.2 and the top of the outer wall of the upper long beam 2.4 are respectively fitted with short shafts 2.6.

[0026] The traction component 3 includes a vertical rod 3.3 that is vertically slidably sleeved with the linear bearing 1.4, a double-headed lug 3.1 fixed to the bottom end of the vertical rod 3.3, and a connecting rod 3.2 whose top end is hinged to the front and rear ends of the double-headed lug 3.1 and whose bottom end is rotatably sleeved with the corresponding short shaft 2.6. Among them, the top end of the vertical rod 3.3 is fixedly connected to a threaded joint 3.4.

[0027] The bottom end of the lead screw 5 is fixedly mounted on the top surface of the box structure 1.2 and located between the two linear bearings 1.4.

[0028] The driving component 4 includes a strip 4.1 fixed at both ends to the top of the vertical rod 3.3, a threaded sleeve 4.2 rotatably fitted at the bottom of the strip 4.1 and threadedly connected to the lead screw 5, and a handle 4.3 radially fixed to the outer peripheral wall of the threaded sleeve 4.2. The strip 4.1 has through holes 4.1.1 at both ends. The threaded connector 3.4 passes through the through holes 4.1.1 and is threadedly fitted with a locking nut 6. That is, the outer edge of the top surface of the vertical rod 3.3 presses against the outer edge of the through hole 4.1.1 on the bottom surface of the strip 4.1. Tightening the locking nut 6 fixes the top of the vertical rod 3.3 to the strip 4.1, facilitating the lifting and pressing of the vertical rod 3.3 when the strip 4.1 moves up and down.

[0029] In summary, the lead screw 5 and the threaded sleeve 4.2 constitute the lead screw nut drive mechanism. The threaded sleeve 4.2 can be easily rotated through the extended handle 4.3, so that the strip 4.1 can drive the vertical rod 3.3 to move up and down accordingly.

[0030] When the crane needs to be braked, rotating the threaded sleeve 4.2 causes the strip 4.1 to drive the vertical rod 3.3 upward. The vertical rod 3.3 pulls the top of the corresponding short beam 2.2 and long beam 2.4 upward through the double-headed lug 3.1, connecting rod 3.2, and short shaft 2.6, thereby causing the four brake blocks 2.5 to move toward the wings of the I-beam track until they are pressed against the wings of the I-beam track to brake the crane.

[0031] When it is necessary to release the crane's brakes, the threaded sleeve 4.2 is rotated in the opposite direction by the handle 4.3, causing the strip 4.1 to drive the vertical rod 3.3 downward. The vertical rod 3.3 then pushes the tops of the corresponding short beam 2.2 and long beam 2.4 downward through the double-headed lug 3.1, connecting rod 3.2, and short shaft 2.6, causing the four brake blocks 2.5 to disengage from the wings of the I-beam track, thus completing the operation of releasing the brake blocks 2.5 and releasing the crane's brakes.

[0032] To improve the wear resistance and braking effect of the brake block 2.5, a friction-enhancing layer 2.7 is provided on the surface of the brake block 2.5 facing the track wing. The friction-enhancing layer 2.7 is made of a material that increases friction resistance and wear resistance, and is welded to the brake block 2.5.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A braking mechanism for a crane, characterized in that, include: The base (1) is fixed to the end of the crane traveling mechanism, and the bottom of the base (1) is provided with a slot (1.2.1) that matches the sliding engagement with the rail; The braking component (2), located on both sides of the track, includes a rectangular frame (2.1), a short beam (2.2) fixedly connected to both ends of the rectangular frame (2.1), a shaft (2.3) with its inner end rotatably fitted into the middle of the rectangular frame (2.1) and its outer end fitted into the side wall of the slot (1.2.1), a long beam (2.4) movably engaged in the middle of the rectangular frame (2.1) and rotatably fitted with the shaft (2.3), and a braking block (2.5) fixed to the outer ends of the short beam (2.2) and the long beam (2.4); The traction component (3) includes a vertical rod (3.3) that is slidably connected to the base (1) in the vertical direction, a double-headed lug (3.1) fixed to the bottom end of the vertical rod (3.3), and a connecting rod (3.2) whose top end is hinged to the front and rear ends of the double-headed lug (3.1) and whose bottom end is respectively hinged to the top end of the short beam (2.2) and the long beam (2.4) on the upper side; The driving component (4), located on the top surface of the base (1), is used to drive the vertical rod (3.3) to move vertically using a screw and nut driving structure.

2. The braking mechanism for a crane according to claim 1, characterized in that: The base (1) includes a fixed seat (1.1) fixedly connected to the end of the crane traveling mechanism and a box structure (1.2) fixed to the end of the fixed seat (1.1). The slot (1.2.1) is located at the middle position of the bottom of the box structure (1.2). The two side walls of the box structure (1.2) are fitted with bushings (1.3) that are rotatably connected to the outer end of the shaft (2.3). The top surface of the box structure (1.2) is fitted with a linear bearing (1.4) that is slidably connected to the vertical rod (3.3).

3. A braking mechanism for a crane according to claim 2, characterized in that: The top surface of the box structure (1.2) is fixedly fitted with a lead screw (5) between the two linear bearings (1.4). The driving component (4) includes a strip (4.1) with both ends fixed to the top of the vertical rod (3.3), a threaded sleeve (4.2) with its bottom end rotatably fitted in the middle of the strip (4.1) and threadedly matched with the lead screw (5), and a handle (4.3) fixed radially to the outer peripheral wall of the threaded sleeve (4.2).

4. A braking mechanism for a crane according to claim 3, characterized in that: The top of the vertical rod (3.3) is fixedly connected to a threaded joint (3.4), and the two ends of the strip (4.1) are provided with through holes. 4.1.1) The threaded connector (3.4) passes through the through hole (4.1.1) and is threaded with a locking nut (6).

5. A braking mechanism for a crane according to claim 1, characterized in that: The top of the outer wall of the upper short beam (2.2) and the top of the outer wall of the long beam (2.4) are respectively fitted with short shafts (2.6) that are matched with the bottom end of the connecting rod (3.2) when rotated.

6. A braking mechanism for a crane according to claim 1, characterized in that: The brake block (2.5) has a drag-increasing layer (2.7) on its surface facing the track wing.

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