Traveling crane limiting mechanism

Abstract

The utility model belongs to the technical field of crane limiting, and particularly relates to a crane limiting mechanism which comprises a main beam and two guide rails fixedly mounted at the top of the main beam, two sliding seats are mounted on each guide rail in a sliding manner, a limiting stop seat is fixedly mounted at the top of each sliding seat, and a guide rod is mounted on each limiting stop seat in a sliding manner. The end part of one end of each guide rod is fixedly provided with a buffer pad, each guide rod is sleeved with a pressure spring, one end of the pressure spring is fixedly connected with the buffer pad, and the other end of the pressure spring is fixedly connected with a limiting stop seat; by means of the limiting blocking seats arranged on the guide rails and the buffering pads and the pressure springs arranged on the limiting blocking seats, the running trolley can be limited in the walking process, the situation that the running trolley exceeds the expected walking range can be avoided, the safety degree of the operation process is improved, the positions of the limiting blocking seats can be adjusted, and the safety of the operation process is improved. Limiting can be adjusted according to the actual running mileage of the trolley, and the applicability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of crane limit, and particularly relates to a traveling crane limit mechanism. Background Technique

[0002] In a steel mill, in order to move and transport heavy goods, large bridge cranes are generally installed in the workshop. This kind of crane is commonly known as a traveling crane, which can lift and transport goods horizontally and vertically. It generally consists of a main car and a sub-car. The main car can move on the bridge installed on both sides of the workshop, and the sub-car can move on the main beam above the main car, so as to achieve horizontal and vertical movement.

[0003] However, during the operation of the sub-car, if it walks beyond the specified range in the moving direction, it will pose a danger to the operation process. At the same time, without a limit mechanism, it will be more difficult to control the traveling distance of the sub-car, increasing the operation difficulty of the car.

[0004] Therefore, it is necessary to provide a new traveling crane limit mechanism to solve the above technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a traveling crane limit mechanism.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a traveling crane limit mechanism, including a main beam and two guide rails fixedly installed on the top of the main beam. Two sliding seats are slidably installed on each guide rail, a limit retaining seat is fixedly installed on the top of each sliding seat, a guide rod is slidably installed on each limit retaining seat, a buffer pad is fixedly installed at the end of one end of each guide rod, a pressure spring is sleeved on each guide rod, one end of the pressure spring is fixedly connected to the buffer pad, and the other end of the pressure spring is fixedly connected to the limit retaining seat.

[0007] Specifically, a gantry is fixedly installed on the main beam, adjusting screws are rotatably installed on the inner walls of both sides thereof, two supporting members are fixedly installed on the inner wall of the top of the gantry, each adjusting screw penetrates through the supporting member and is rotatably connected to the corresponding supporting member; servo motors are fixedly installed on the outer walls of both sides of the gantry, the output shaft of the servo motor is fixedly connected to one end of the adjusting screw, and a movable arm is threadedly installed on each adjusting screw.

[0008] Specifically, first connecting pieces are fixedly installed on the tops of the movable arms, first damping pads are fixedly installed on the tops of the first connecting pieces, a second connecting piece is arranged above the first damping pads, second damping pads are fixedly installed on the bottoms of the second connecting pieces, and the second damping pads are in contact with the two first damping pads.

[0009] Specifically, an installation groove is formed on one side of the movable arm. An opening is provided at the bottom of the installation groove. An installation strip is fixedly installed in the installation groove through bolts, and a limiting retaining seat is fixedly connected to the bottom of the installation strip.

[0010] Specifically, a movable plate is provided above the gantry. A connecting rod is fixedly installed at the top of the second connecting piece. The top ends of the connecting rods all extend above the gantry and are fixedly connected to the movable plate. And the connecting rods are slidably connected to the top of the gantry. A concave rod is provided in the gantry. The top end of the concave rod extends above the gantry and is fixedly connected to the movable plate. The concave rod is slidably connected to the top of the gantry. A hydraulic cylinder is fixedly installed at the top of the gantry. The hydraulic cylinder penetrates through the movable plate. The output shaft of the hydraulic cylinder extends into the gantry and is fixedly connected to the concave rod. And the output shaft of the hydraulic cylinder is slidably connected to the top of the gantry.

[0011] The utility model has the following beneficial effects: By providing the limiting retaining seat on the guide rail, and the buffer pad and the pressure spring on the limiting retaining seat, a limiting effect on the running trolley in terms of position can be formed, thereby being able to avoid exceeding the expected walking range, improving the safety level of the operation process. And, the position of the limiting retaining seat can be adjusted, and the limit can be adjusted according to the actual running mileage of the trolley, and the applicability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the schematic structural diagram (one) of the utility model.

[0013] Figure 2 It is the schematic structural diagram (two) of the utility model.

[0014] Figure 3 It is the schematic structural diagram (three) of the utility model.

[0015] Figure 4 It is the schematic connection structure diagram of the limiting retaining seat and the guide rod.

[0016] In the figure: 1 - main beam; 2 - guide rail; 3 - sliding seat; 4 - limiting retaining seat; 5 - guide rod; 6 - buffer pad; 7 - pressure spring; 8 - gantry; 9 - adjusting screw; 10 - movable arm; 11 - installation groove; 12 - installation strip; 13 - first connecting piece; 14 - first damping pad; 15 - movable plate; 16 - connecting rod; 17 - second connecting piece; 18 - second damping pad; 19 - hydraulic cylinder; 20 - concave rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Now, the utility model will be further described in detail with reference to the accompanying drawings.

[0018] Such as Figures 1-4As shown in the figure, there is a traveling limit mechanism, including a main beam 1 and two guide rails 2 fixedly installed on the top of the main beam 1. Two sliders 3 are slidably installed on the two guide rails 2. Limit blocks 4 are fixedly installed on the tops of the two sliders 3. Guide rods 5 are slidably installed on the two limit blocks 4. Buffer pads 6 are fixedly installed at the mutually approaching ends of the two guide rods 5. Pressure springs 7 are sleeved on the two guide rods 5. The mutually approaching ends of the two pressure springs 7 are respectively fixedly connected to the two buffer pads 6, and the mutually remote ends are respectively fixedly connected to the two limit blocks 4. By arranging the limit blocks 4 on both sides, the trolley walking between them can be limited. Moreover, by means of the buffer pads 6 and the pressure springs 7, the trolley will not be violently collided, forming a protection for it.

[0019] In the above method, in order to position the limit block 4 and at the same time be able to adjust its position to ensure the limitation of trolleys with different traveling distances, a gantry 8 is fixedly installed on the main beam 1. Adjusting screws 9 are rotatably installed on the inner walls of both sides of it. Two supporting members are fixedly installed on the inner wall of the top of the gantry 8. The two adjusting screws 9 respectively penetrate through the two supporting members and are rotatably connected to the corresponding supporting members to form end supports for the adjusting screws 9. Moreover, servo motors are fixedly installed on the outer walls of both sides of the gantry 8. The output shafts of the two servo motors are respectively fixedly connected to the mutually remote ends of the two adjusting screws 9. Movable arms 10 are threadedly installed on the two adjusting screws 9. Installation grooves 11 are formed on the mutually remote sides of the two movable arms 10. The bottoms of the two installation grooves 11 are both open. Installation bars 12 are fixedly installed in the two installation grooves 11 by bolts. The bottoms of the two installation bars 12 are respectively fixedly connected to the two limit blocks 4. This installation method also facilitates the subsequent replacement of the limit block 4. In addition, avoidance openings are formed on both sides of the gantry 8. When replacing the limit block 4, the limit block 4 can be slid out from the avoidance opening. Moreover, first connecting pieces 13 are fixedly installed on the tops of the two movable arms 10. First damping pads 14 are fixedly installed on the tops of the two first connecting pieces 13. Second connecting pieces 17 are arranged above the two first damping pads 14. Second damping pads 18 are fixedly installed on the bottoms of the two second connecting pieces 17. The two second damping pads 18 respectively abut against the two first damping pads 14. By means of their tight abutment, after the slider 3 is adjusted to the specified position, it can be firmly fixed at this position, ensuring the limiting effect on the trolley.

[0020] In order to drive the first damping pad 14 into contact with or separation from the second damping pad 18, a movable plate 15 is provided above the gantry 8. Two connecting rods 16 are fixedly installed at the top of each of the two second connecting pieces 17. The tops of the four connecting rods 16 all extend above the gantry 8 and are fixedly connected to the movable plate 15. Moreover, the connecting rods 16 are slidably connected to the top of the gantry 8. A concave rod 20 is provided inside the gantry 8. The top of the concave rod 20 extends above the gantry 8 and is fixedly connected to the movable plate 15. The concave rod 20 is slidably connected to the top of the gantry 8. A hydraulic cylinder 19 is fixedly installed at the top of the gantry 8. The hydraulic cylinder 19 penetrates the movable plate 15. The output shaft of the hydraulic cylinder 19 extends into the gantry 8 and is fixedly connected to the concave rod 20. Moreover, the output shaft of the hydraulic cylinder 19 is slidably connected to the top of the gantry 8.

[0021] The working principle of the traveling crane limit mechanism provided by the present utility model is as follows:

[0022] During use, the trolley is slidably installed on the two guide rails 2 for use. And in the initial state of this mechanism, the output shaft of the hydraulic cylinder 19 is in the extended state;

[0023] When it is necessary to make the trolley slide on the guide rail 2, in order to enable the trolley to accurately stay in the designated area, the designated limit block 4 can be selected according to the moving direction of the trolley. During operation, first start the output shaft of the hydraulic cylinder 19 to retract, so that the first damping pad 14 is separated from the second damping pad 18. Then start the corresponding servo motor, and its output shaft drives the corresponding adjusting screw 9 to rotate, thereby being able to drive the movable arm 10 to move horizontally. At this time, the sliding seat 3 will move on the guide rail 2. When it moves to the designated area, start the output shaft of the hydraulic cylinder 19 to extend, so that the second damping pad 18 tightly abuts against the first damping pad 14 again, thereby forming an anti-slip effect. Then turn off the servo motor and start the trolley on the crane to move and hoist. During the movement of the trolley, when it collides with the corresponding buffer pad 6, it will squeeze the compression spring 7, causing the compression spring 7 to be compressed, thereby being able to provide corresponding buffering for the trolley. After the trolley stops, the trolley has moved to the designated area, thus completing the limit buffering of the trolley;

[0024] In subsequent use, when the compression spring 7 and the buffer pad 6 reach the service life due to long-term compression, the bolts connecting the movable arm 10 and the mounting strip 12 can be directly screwed out, and then the sliding seat 3 together with the limit block 4 is slid out from the guide rail 2, and then the sliding seat 3 on the new limit block 4 is installed on the guide rail 2, so as to facilitate the later maintenance.

[0025] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A driving limit mechanism, characterized in that: It includes a main beam and two guide rails fixedly installed on the top of the main beam, two slide seats are slidably installed on each guide rail, a limit stop seat is fixedly installed on the top of each slide seat, a guide rod is slidably installed on each limit stop seat, a buffer pad is fixedly installed on the end of one end of each guide rod, a pressure spring is sleeved on each guide rod, one end of the pressure spring is fixedly connected to the buffer pad, and the other end of the pressure spring is fixedly connected to the limit stop seat.

2. A driving limit mechanism according to claim 1, characterized in that: A gantry is fixedly installed on the main beam, and adjusting screws are rotatably installed on the inner walls on both sides of the gantry. Two supporting members are fixedly installed on the top inner wall of the gantry, and each adjusting screw penetrates the supporting member and is rotatably connected to the corresponding supporting member; servo motors are fixedly installed on the outer walls on both sides of the gantry, and the output shaft of the servo motor is fixedly connected to one end of the adjusting screw, and a movable arm is threadedly installed on each adjusting screw.

3. A driving limit mechanism according to claim 1, characterized in that: A first connecting piece is fixedly installed on the top of the movable arm, a first damping pad is fixedly installed on the top of the first connecting piece, a second connecting piece is provided above the first damping pad, a second damping pad is fixedly installed on the bottom of the second connecting piece, and the second damping pad conflicts with the two first damping pads.

4. A driving limit mechanism according to claim 2, characterized in that: A mounting groove is provided on one side of the movable arm, an opening is provided at the bottom of the mounting groove, a mounting strip is fixedly installed in the mounting groove by bolts, and the bottom of the mounting strip is fixedly connected to a limit stop seat.

5. A driving limit mechanism according to claim 2, characterized in that: A movable plate is provided above the gantry, and a connecting rod is fixedly installed on the top of the second connecting plate. The top ends of the connecting rods extend to the top of the gantry and are fixedly connected to the movable plate, and the connecting rods are slidably connected to the top of the gantry. A concave rod is provided in the gantry, and the top end of the concave rod extends to the top of the gantry and is fixedly connected to the movable plate, and the concave rod is slidably connected to the top of the gantry. A hydraulic cylinder is fixedly installed on the top of the gantry, and the hydraulic cylinder passes through the movable plate. The output shaft of the hydraulic cylinder extends into the gantry and is fixedly connected to the concave rod, and the output shaft of the hydraulic cylinder is slidably connected to the top of the gantry.

Images