Wheel braking device of rubber-tyred container gantry crane

Abstract

The utility model provides a wheel brake device of a rubber-tyred container gantry crane, which comprises a mounting support, at least one group of brake mechanism is arranged on the mounting support, each group of brake mechanism comprises two brake wedge blocks capable of moving in opposite directions, and each brake wedge block is slidably mounted on the mounting support; at least one of the two brake wedge blocks of the brake mechanism is provided with a telescopic assembly, and the two brake wedge blocks of the brake mechanism are connected through the telescopic assembly. The wheel braking device of the rubber-tyred container gantry crane is simple in structure and easy to use and control, can be used for conveniently braking wheels of the rubber-tyred container gantry crane, reduces the operation difficulty of operators, and improves the working efficiency. And remote or automatic control over wheel braking of the rubber-tyred container gantry crane is facilitated, so that the automatic operation efficiency of the rubber-tyred container gantry crane is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of braking equipment, and particularly relates to a wheel braking device for a rubber-tyred gantry crane for containers. Background Art

[0002] A rubber-tyred gantry crane (RTG for short) is a main container loading and unloading device in a container terminal yard. It travels on large wheels. When the driver needs to get off the crane and leave the yard crane in a stopped or wind-proof state, a wind-proof wedge is inserted under the wheels (between the wheel tires and the ground). The self-weight of the yard crane and the increased wheel climbing angle are used to cooperate for braking. The wind-proof wedge is very heavy, laborious to operate, and time-consuming and laborious to place in the standard position. The manual operation placement rate is relatively low, affecting the braking effect.

[0003] With the increasing popularity of remote control automation for terminal cranes, the crane driver has changed from operating in the driver's cab on the crane to the remote control room of the rubber-tyred gantry crane behind the terminal. After the yard crane stops and before use, only specialized personnel can be equipped to go to the site to wedge in or remove the wind-proof wedge, which is very inconvenient, reduces the efficiency of automated control, and affects the effective use of automation. Summary of the Utility Model

[0004] In view of this, the utility model aims to provide a wheel braking device for a rubber-tyred gantry crane for containers to solve the problems of low automation of the existing braking device for rubber-tyred gantry cranes, inconvenient remote control or automatic control of RTG wheels for braking, and affecting the working efficiency of the crane.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A wheel braking device for a rubber-tyred gantry crane for containers includes a mounting support. At least one set of braking mechanisms is provided on the mounting support. Each set of braking mechanisms includes two braking wedges that can move towards each other. Each braking wedge is slidably mounted on the mounting support. At least one of the two braking wedges of the braking mechanism is provided with a telescopic assembly. The two braking wedges of the braking mechanism are connected by the telescopic assembly to drive the two braking wedges to move towards each other by using the telescopic assembly. At least one of the two braking wedges of the braking mechanism is also provided with a limit detection mechanism for detecting the position of the braking wedge to detect the position of the braking wedge.

[0007] Further, a convex portion is provided at one end of each braking wedge block in the braking mechanism facing the other braking wedge block, and at least two convex portions are arranged at intervals on each braking wedge block; the convex portions on the two braking wedge blocks in the braking mechanism are arranged in a staggered manner, so that the convex portions on the two braking wedge blocks cooperate with each other to realize the limit and guidance of the braking wedge blocks.

[0008] Further, an arc surface portion that cooperates with the tire is provided on one side of the braking wedge block facing the tire, and a flat surface portion that cooperates with the vehicle frame is provided on the other side.

[0009] Further, friction ribs are also provided on one side of the braking wedge block facing the tire, and a plurality of friction ribs are arranged at intervals, and the length direction of each friction rib is the same as the axial direction of the tire.

[0010] Further, a limiting rod is provided at one end of one braking wedge block in the braking mechanism facing the other braking wedge block, and a limiting hole that cooperates with the limiting rod is provided on the other braking wedge block. At least one limiting rod is provided on each braking wedge block, and the limiting rods on the two braking wedge blocks in the same set of braking mechanisms are arranged in a staggered manner.

[0011] Further, the limit detection mechanism is arranged corresponding to the limit hole, and a detection portion that can cooperate with the limit detection mechanism is provided at one end of the limiting rod extending into the limit hole.

[0012] Further, the limit detection mechanism includes a braking detection limit sensor and a low tire pressure detection limit sensor arranged at intervals on the braking wedge block. The braking detection limit sensor is arranged at a position on one braking wedge block in the braking mechanism close to the other braking wedge block, and the low tire pressure detection limit sensor is arranged at a position on one braking wedge block in the braking mechanism far from the other braking wedge block.

[0013] Further, a sliding block is provided on the mounting seat, and a sliding groove for accommodating the sliding block is provided on the braking wedge block. The length direction of the sliding groove is the same as the sliding direction of the braking wedge block.

[0014] Further, the sliding block is arranged in a staggered manner with the limiting rod.

[0015] Further, wedge block stoppers for limiting the braking wedge block are provided at both ends of the mounting seat.

[0016] Compared with the prior art, the wheel braking device of the tire type container gantry crane of the present utility model has the following advantages:

[0017] (1) A wheel braking device for a rubber-tyred gantry crane according to the present utility model has the advantages of simple structure, easy use and control. It can be used for the convenient braking of the wheels of a rubber-tyred gantry crane, reducing the operation difficulty of operators, facilitating the realization of remote or automatic control of the wheel braking of a rubber-tyred gantry crane, and thus improving the automation operation efficiency of a rubber-tyred gantry crane.

[0018] (2) A wheel braking device for a rubber-tyred gantry crane according to the present utility model limits the tyre by using two braking wedges that can move towards each other. Whether the tyre rotates forward or backward, the two correspondingly arranged braking wedges in the braking mechanism can play a good braking role on the tyre to prevent the crane from moving. At the same time, by using the telescopic assembly to drive the two correspondingly arranged braking wedges to brake the tyre, there is no need for the operator to manually brake on site, which is conducive to reducing the operation difficulty of the operator and improving the automation efficiency.

[0019] (3) A wheel braking device for a rubber-tyred gantry crane according to the present utility model is provided with a limiting rod on one braking wedge of the same group of braking mechanisms and a limiting hole cooperating with the limiting rod on the other braking wedge. By using the cooperation of the limiting rod and the limiting hole, not only the stability of the two braking wedges moving towards each other is improved. Moreover, by arranging the limiting detection mechanism corresponding to the limiting hole on the braking wedge, the braking wedge can also protect the detection part of the limiting rod, as well as the detection ends of the braking detection limit sensor and the low tyre pressure detection limit sensor, which is conducive to improving the detection accuracy and reliability of the braking detection limit sensor and the low tyre pressure detection limit sensor during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0021] Figure 1 is a schematic structural diagram of a wheel braking device for a rubber-tyred gantry crane according to Embodiment 1 of the present utility model;

[0022] Figure 2 is Figure 1 a side view of;

[0023] Figure 3 is a schematic structural diagram of a braking mechanism in a wheel braking device for a rubber-tyred gantry crane according to Embodiment 1 of the present utility model;

[0024] Figure 4 is Figure 3 a top view of;

[0025] Figure 5 Schematic diagram of the structure of the scraping strip in a wheel braking device of a rubber-tyred gantry crane according to the first embodiment of the present invention;

[0026] Figure 6 Schematic diagram of the structure of the braking mechanism in a wheel braking device of a rubber-tyred gantry crane according to the second embodiment of the present invention.

[0027] Description of the reference numerals:

[0028] 1. Mounting support; 2. Braking wedge; 3. Chute; 4. Telescopic assembly; 401. Electric turbine box; 402. Screw; 5. Slide block; 6. Protruding part; 7. Low tire pressure detection limit sensor; 8. Braking detection limit sensor; 9. Friction rib; 10. Limit rod; 11. Pin shaft; 12. Mounting seat; 13. Bellows; 14. Seal; 15. Arc surface part; 16. Tire; 17. Wedge stop; 18. Frame; 19. Scraping strip; 20. Through hole. Detailed implementation manners

[0029] The present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the sake of description, only parts related to the present invention are shown in the drawings, rather than all the structures.

[0030] First embodiment

[0031] Figure 1 Schematic diagram of the structure of a wheel braking device of a rubber-tyred gantry crane according to the first embodiment of the present invention. As Figures 1 to 5 shown, this braking device includes a mounting support 1, and at least one set of braking mechanisms is provided on the mounting support 1. Each set of the braking mechanisms includes two braking wedges 2 that can move towards each other, and each braking wedge 2 is slidably mounted on the mounting support 1; at least one of the two braking wedges 2 of the braking mechanism is provided with a telescopic assembly 4, and the two braking wedges 2 of the braking mechanism are connected by the telescopic assembly 4 to drive the two braking wedges 2 to move towards each other by using the telescopic assembly 4; at least one of the two braking wedges 2 of the braking mechanism is also provided with a limit detection mechanism for detecting the position of the braking wedge 2 to realize the detection of the position of the braking wedge 2.

[0032] Exemplarily, the mounting support 1 can be fixed on the vehicle frame 18. One or more sets of braking mechanisms can be provided on the mounting support 1 to brake the tire 16. Those skilled in the art can set multiple sets of braking mechanisms according to the number of tires 16 and actual needs, or use one set of braking mechanisms to brake multiple tires 16. Those skilled in the art can design the number of braking mechanisms according to actual needs to achieve the cooperation between the braking wedge 2 and the tire 16, and then effectively brake the tire 16, which will not be elaborated here.

[0033] In the actual application process, the telescopic assembly 4 can adopt existing telescopic rods, such as hydraulic cylinders, air cylinders or screw jacks and other telescopic devices. Specifically, the fixed end of the telescopic rod can be installed and fixed on one braking wedge 2 of the same set of braking mechanisms, and the telescopic end of the telescopic rod is installed and fixed on another braking wedge 2 of the same set of braking mechanisms. By the telescopic movement of the telescopic rod, the two braking wedges 2 of the same set of braking mechanisms can be driven to move towards each other to brake the tire 16. By using two braking wedges 2 that can move towards each other to limit the position of the tire 16, whether the tire 16 rotates forward or reversely, the two braking wedges 2 of the same set of braking mechanisms can play a good braking role on the tire 16 to prevent the crane from moving.

[0034] In addition, those skilled in the art can also connect the telescopic rod controller to the upper host computer or the main controller through existing wireless communication modules, so as to realize the remote control of the telescopic movement of the telescopic rod. Those skilled in the art can also select a suitable method to control the telescopic rod according to actual needs to realize the remote control or automatic control of the RTG wheels. Using the wireless communication module to realize the remote control of the telescopic rod belongs to the common technical means of those skilled in the art, so it will not be elaborated here. By using the telescopic assembly 4 to drive the two corresponding braking wedges 2 to brake the tire 16, there is no need for the operator to manually brake on site, which is beneficial to reducing the operation difficulty of the operator and improving the automation efficiency.

[0035] Optionally, a convex portion 6 is provided at one end of one braking wedge 2 in the same set of braking mechanisms facing the other braking wedge 2, and at least two convex portions 6 are arranged at intervals on each braking wedge 2; the convex portions 6 on the two braking wedges 2 in the braking mechanism are arranged in a staggered manner so that the convex portions 6 on the two braking wedges 2 cooperate with each other to realize the limit and guidance of the braking wedges 2.

[0036] Exemplarily, two, three or more protrusions 6 may be arranged at intervals. For example, when two protrusions 6 are arranged at intervals, the brake wedge 2 is an F-shaped structural member, and the two brake wedges 2 in the F-shaped structure intersect with each other, which is beneficial to improving the structural strength of the joint of the two brake wedges 2 in the same set of braking mechanisms. When ensuring that the two brake wedges 2 act on the tire 16, the two brake wedges 2 can move stably under the drive of the telescopic assembly 4 and the guiding action of the protrusions 6, avoiding the influence of the deviation or deformation damage of the brake wedges 2 during the movement on the braking effect of this braking device. In addition, those skilled in the art can also adjust the number of protrusions 6 according to actual needs, which will not be elaborated here.

[0037] In the actual application process, the telescopic assembly 4 can be arranged corresponding to the middle of the brake wedge 2, and there is an accommodation gap for accommodating the telescopic assembly 4 between the protrusions 6 of the brake wedge 2. By arranging the telescopic assembly 4 corresponding to the middle of the brake wedge 2, it is beneficial to improve the stability of the telescopic assembly 4 driving the brake wedge 2 to move, making the forces on the two corresponding brake wedges 2 in the same set more uniform, and further reducing the possibility of the brake wedge 2 deviating or being deformed and damaged.

[0038] Exemplarily, the telescopic assembly 4 includes a screw 402 and an electric turbine box 401 for driving the screw 402 to move. The brake wedge 2 is provided with a mounting hole facilitating the passing of the screw 402. Among them, the electric turbine box 401 can be fixedly installed on one brake wedge 2 of the same set of braking mechanisms by screws. One end of the screw 402 is connected and cooperated with the electric turbine box 401, and the other end is connected to another brake wedge 2 of the same set of braking mechanisms through a pin shaft 11. The screw 402 is provided with a pin hole cooperating with the pin shaft 11, and a mounting seat 12 cooperating with the pin shaft 11 is fixed on the brake wedge 2. The mounting seat 12 is arranged corresponding to the mounting hole, and the mounting seat 12 is also provided with a pin hole cooperating with the pin shaft 11. In addition, the power supply and control methods of the electric turbine box 401 are all prior arts and will not be elaborated here either.

[0039] Optionally, a scraping strip 19 is provided on the protrusion 6, and the side of the scraping strip 19 facing the tire 16 is provided with an inclined surface portion. Exemplarily, the scraping strip 19 can be fixed at the joint of the protrusion 6, so that the scraping strip 19 can scrape off foreign matters such as dirt attached to the surface of the protrusion 6 to facilitate the sliding of the brake wedge 2.

[0040] In addition, the scraping strip 19 can also be arranged corresponding to the telescopic assembly 4 to scrape off foreign matters such as soil on the telescopic rod. When the scraping strip 19 is arranged corresponding to the telescopic assembly 4, through holes 20 that cooperate with the telescopic end of the telescopic rod can also be arranged on the scraping strip 19. By using the cooperation between the through holes 20 and the telescopic end of the telescopic rod, this is conducive to further improving the scraping effect of the scraping strip 19 on foreign matters such as soil on the telescopic end of the telescopic rod, preventing foreign matters such as soil from affecting the telescopic movement of the telescopic rod, and ensuring that the telescopic assembly 4 can continuously and stably drive the two braking wedges 2 to move towards each other.

[0041] In the actual application process, when the two braking wedges 2 move towards each other, the scraping strip 19 can have a good cleaning effect on foreign matters such as soil attached to the convex portion 6 or the telescopic rod of the telescopic assembly 4, preventing foreign matters such as soil attached to the braking wedges 2 from affecting the movement of the braking wedges 2, which is conducive to improving the reliability of this braking device during use. At the same time, by arranging an inclined surface portion on the side of the scraping strip 19 facing the tire 16, foreign matters such as soil cleaned by the scraping strip 19 can also fall below this braking device and are not likely to remain on the braking device, which is conducive to further improving the reliability of this braking device and reducing the use and maintenance difficulty of this braking device.

[0042] Optionally, an arc surface portion 15 that cooperates with the tire 16 is provided on the side of the braking wedge 2 facing the tire 16, and a flat surface portion that cooperates with the vehicle frame 18 is provided on the other side. By arranging the arc surface portion 15, it is conducive to the braking wedge 2 better fitting with the surface of the tire 16, improving the braking effect of the braking wedge 2 on the tire 16. In addition, by arranging the flat surface portion, the flat surface portion can better fit with the vehicle frame 18, thereby realizing the vertical limit of the braking wedge 2, which is conducive to ensuring that the braking wedge 2 continuously and stably brakes the tire 16.

[0043] In the actual application process, friction ribs 9 are also provided on the side of the braking wedge 2 facing the tire 16. A plurality of the friction ribs 9 are arranged at intervals, and the length direction of each friction rib 9 is the same as the axial direction of the tire 16. Exemplarily, the friction ribs 9 can be made of existing wear-resistant polymer materials, such as wear-resistant plastics or wear-resistant rubbers, etc. The friction ribs 9 can be fixedly adhered to the braking wedge 2 through an adhesive. By arranging a plurality of friction ribs 9 at intervals, it is conducive to improving the friction braking effect of the braking wedge 2 on the tire 16.

[0044] Optionally, the limit detection mechanism includes a braking detection limit sensor 8 and a low tire pressure detection limit sensor 7 that are spaced apart on the braking wedge block 2. The braking detection limit sensor 8 is disposed on one of the braking wedge blocks 2 in the braking mechanism near the other braking wedge block 2, and the low tire pressure detection limit sensor 7 is disposed on one of the braking wedge blocks 2 in the braking mechanism away from the other braking wedge block 2. Exemplarily, both the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7 can adopt existing limit switches and are installed and fixed on the braking wedge block 2 by existing conventional methods. By spacing the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7, two detections of the moving position of the braking wedge block 2 can be achieved, thereby realizing the detection of the braking effect of the braking wedge block 2 and the tire pressure of the tire 16.

[0045] In the actual application process, both the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7 can adopt contact limit switches or mechanical switches. A limit rod 10 that cooperates with the limit switch can also be provided on the braking wedge block 2. The limit rod 10 is fixed on one of the braking wedge blocks 2 in the braking mechanism, and both the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7 are disposed on the other braking wedge block 2.

[0046] Specifically, when the telescopic assembly 4 drives the two braking wedge blocks 2 to move towards each other, the limit rod 10 will first contact the braking detection limit sensor 8, indicating that the two braking wedge blocks 2 can normally brake the tire 16. If the tire pressure of the tire 16 is too low, the tire 16 cannot limit the two braking wedge blocks 2, and the two braking wedge blocks 2 can continue to approach under the drive of the telescopic assembly 4 until the limit rod 10 contacts the low tire pressure detection limit sensor 7. At this time, it indicates that the tire pressure of the tire 16 is too low, and the braking wedge block 2 cannot achieve a normal braking effect on the tire 16 or the braking effect decreases. Those skilled in the art can use the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7 to detect the braking effect of the tire 16 and the tire pressure of the tire 16, which is beneficial to improving the reliability of this braking device during remote control or automatic control.

[0047] Optionally, a slider 5 is provided on the mounting bracket 1, and a chute 3 for accommodating the slider 5 is provided on the braking wedge block 2. The length direction of the chute 3 is the same as the sliding direction of the braking wedge block 2. Exemplarily, the slider 5 is fixed on the mounting bracket 1, and the mounting bracket 1 can be fixed on the vehicle frame 18. Among them, the width of the chute 3 can be slightly larger than the width of the slider 5 to facilitate the vertical adaptive adjustment of the braking slider 5, so that the two braking wedge blocks 2 can better contact and cooperate with the tire 16 when moving towards each other, avoiding the limit of the braking wedge block 2 by the slider 5 resulting in an imperfect contact between the braking wedge block 2 and the tire 16, which affects the braking effect of the braking wedge block 2 on the tire 16.

[0048] In the actual application process, wedge stops 17 for limiting the braking wedge blocks 2 are provided at both ends of the mounting support 1. Exemplarily, the wedge stops 17 can be fixedly installed on the mounting support 1 by bolts. By providing the wedge stops 17 at both ends of the mounting support 1, it is possible to prevent the braking wedge blocks 2 from falling off during the movement of the crane, and ensure that the braking wedge blocks 2 can brake the tires 16 under the drive of the telescopic assembly 4 after the crane stops.

[0049] The specific implementation principle of this wheel braking device for a rubber-tyred gantry crane is as follows:

[0050] This braking device is installed on the crane wheel frame by fitting the sliding grooves on both sides of the braking wedge block with the sliders on the inner mounting supports of the rubber-tyred gantry crane frame. There is sufficient clearance between the slider and the sliding groove, which can ensure that the force on the braking wedge block during braking will not affect the mounting support. Wedge stops are provided at both ends of the mounting support to prevent it from falling off.

[0051] When braking is required, the electric turbine box is powered on and runs. The two braking wedge blocks are driven to move towards each other by the screw rod. The two braking wedge blocks approach each other, and the tails of the two braking wedge blocks are wedged between the tire and the frame to prevent the tire from rotating. Since the two braking wedge blocks have become an integral body at this time, the movement of the tire in any direction will increase the wedging depth of the other braking wedge block, and the braking force will also increase. At the same time, the braking and opening states can be reflected through the cooperation of the limit rod and the braking detection limit sensor to ensure the normal operation and braking of the rubber-tyred gantry crane. If the limit rod touches the low tire pressure braking detection limit sensor, it means that the wheel is in a significantly deflated state, and it should be timely reminded to replenish the tire to prevent affecting the braking effect of the wheel.

[0052] A wheel braking device for a rubber-tyred gantry crane described in this embodiment has the advantages of simple structure, easy use and control. It can be used for the convenient braking of the wheels of a rubber-tyred gantry crane, reducing the operation difficulty of the operator, and is conducive to realizing the remote or automatic control of the wheel braking of the rubber-tyred gantry crane, thereby improving the automatic operation efficiency of the rubber-tyred gantry crane. By using two braking wedge blocks that can move towards each other to limit the tire, whether the tire rotates forward or backward, the two correspondingly arranged braking wedge blocks can play a good braking role on the tire to prevent the crane from moving. At the same time, by using the telescopic assembly to drive the two correspondingly arranged braking wedge blocks to brake the tire, there is no need for the operator to perform manual braking on site, which is conducive to reducing the operation difficulty of the operator and improving the automation efficiency.

[0053] Embodiment 2

[0054] Figure 6This is a schematic structural diagram of a wheel braking device for a tire - type container gantry crane according to Embodiment 1 of the present utility model. Refer to Figure 6 , on the basis of the above - mentioned embodiment, this embodiment is optimized. Specifically, the optimization is as follows: One end of a braking wedge 2 in the braking mechanism facing another braking wedge 2 is further provided with a limiting rod 10, and the other braking wedge 2 is provided with a limiting hole for cooperating with the limiting rod 10. Each braking wedge 2 is provided with at least one limiting rod 10, and the limiting rods 10 on the two braking wedges 2 in the same set of braking mechanisms are arranged in a staggered manner.

[0055] Exemplarily, two limiting rods 10 and limiting holes for cooperating with the limiting rods 10 are respectively provided on the two braking wedges 2. By arranging the limiting rods 10 on the two braking wedges 2 in a staggered manner and using the cooperation between the limiting rod 10 and the limiting hole, combined with the cooperation of the convex portions 6 on the two braking wedges 2, the stability of the movement of the two braking wedges 2 can be further improved, thereby ensuring the braking effect of this braking device on the tire. Those skilled in the art can also, according to actual needs, set multiple limiting rods 10 on one braking wedge 2. Using the cooperation of multiple limiting rods 10 and the limiting holes is beneficial to further improving the stability of the sliding fit between the two braking wedges 2.

[0056] Optionally, the limit detection mechanism is arranged corresponding to the limit hole. One end of the limiting rod 10 extending into the limit hole is provided with a detection portion that can cooperate with a braking detection limit sensor 8 and a low - tire - pressure detection limit sensor 7. Among them, the detection portion can be set according to the models of the braking detection limit sensor 8 and the low - tire - pressure detection limit sensor 7. Those skilled in the art can select according to actual needs, so it will not be elaborated here.

[0057] Exemplarily, a limit detection mechanism is arranged at a position corresponding to a limit hole on one braking wedge 2. Among them, both the braking detection limit sensor 8 and the low - tire - pressure detection limit sensor 7 can adopt non - contact limit switches or position sensors. The braking wedge 2 is provided with assembly holes for installing the braking detection limit sensor 8 and the low - tire - pressure detection limit sensor 7. The assembly holes are communicated with the limit holes. The braking detection limit sensor 8 and the low - tire - pressure detection limit sensor 7 can both be installed and fixed on the braking wedge 2 by screws. The detection ends of the braking detection limit sensor 8 and the low - tire - pressure detection limit sensor 7 extend into the assembly holes to facilitate cooperation with the detection portion on the limiting rod 10.

[0058] In the actual application process, by using the cooperation between the limiting rod 10 and the limiting hole, not only can the sliding guidance of the two braking wedges 2 be realized, but also the detection of the braking effect of the braking wedges 2 and the tire pressure can be achieved by the cooperation between the detection part on the limiting rod 10 and the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7, which is beneficial to further improve the reliability of this braking device during remote control or automatic control. In addition, by setting the limiting hole, the detection part of the limiting rod 10, as well as the detection ends of the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7, can be protected by the braking wedge 2, which is beneficial to improve the detection accuracy and reliability of the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7 during actual use.

[0059] Optionally, a seal 14 cooperating with the limiting rod 10 is provided at the position of the braking wedge 2 corresponding to the limiting hole. Exemplarily, the seal 14 can adopt an existing sealing ring or sealing filler, and the seal 14 can be installed on the braking wedge 2 by an existing conventional installation method to achieve the sealing of the connection between the limiting rod 10 and the braking wedge 2. Those skilled in the art can also select a suitable seal 14 and its installation method according to actual needs, which will not be elaborated here.

[0060] By setting the seal 14, foreign matters such as dirt can be prevented from entering the limiting hole, thereby preventing the accumulation of foreign matters such as dirt in the limiting hole, ensuring that the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7 can continuously and stably cooperate with the detection part of the limiting rod 10 to realize the detection of the position of the braking wedge 2. In addition, the seal 14 can also block the influence of the external environment on the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7, avoiding interference from the external environment to the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7, which is beneficial to further improve the detection accuracy of the braking detection limit sensor 8 and the low tire pressure detection limit sensor 7.

[0061] Optionally, a corrugated pipe 13 is sleeved outside the limiting rod 10, and the left and right ends of the corrugated pipe 13 are respectively connected to the two corresponding braking wedges 2. Exemplarily, the two ends of the corrugated pipe 13 can be respectively installed and fixed on the two corresponding braking wedges 2 by screws. By setting the corrugated pipe 13, further shielding and protection of the limiting rod 10 can be achieved without affecting the movement of the limiting rod 10. By cooperating the corrugated pipe 13 with the seal 14, the possibility of foreign matters such as dirt entering the limiting hole can be effectively reduced, which is beneficial to further improve the reliability of this braking device during use.

[0062] In actual application, the slider 5 is staggered with the limiting rod 10. By staggering the slider 5 with the limiting rod 10, the slide groove 3 and the limiting hole on the brake wedge 2 can be staggered, which is beneficial to improving the structural strength of the brake wedge 2. At the same time, when the two brake wedges 2 move toward each other, the limiting rod 10 and the slider 5 can achieve multi-point guidance of the brake wedge 2, which is beneficial to disperse the local force of the brake wedge 2, thereby improving the reliability of the brake wedge 2 in the process of braking the tire.

[0063] The wheel brake device of a tire-type container gantry crane described in this embodiment is provided with a limit rod on one brake wedge of the same brake mechanism, and a limit hole cooperating with the limit rod is provided on another brake wedge. The limit rod cooperates with the limit hole, which not only improves the stability of the two brake wedges when they move toward each other. Moreover, by providing the limit detection mechanism corresponding to the limit hole on the brake wedge, the brake wedge can also protect the limit rod detection part, the brake detection limit sensor and the low tire pressure detection limit sensor detection end, which is conducive to improving the detection accuracy and reliability of the brake detection limit sensor and the low tire pressure detection limit sensor in actual use.

[0064] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A wheel brake device for a tire-type container gantry crane, characterized in that: The invention comprises a mounting support (1), wherein at least one set of braking mechanisms is arranged on the mounting support (1), each set of braking mechanisms comprises two braking wedges (2) capable of moving toward each other, and each braking wedge (2) is slidably mounted on the mounting support (1); at least one of the two braking wedges (2) of the braking mechanism is provided with a telescopic assembly (4), and the two braking wedges (2) of the braking mechanism are connected via the telescopic assembly (4) so ​​as to realize the telescopic assembly (4) driving the two braking wedges (2) to move toward each other; and at least one of the two braking wedges (2) of the braking mechanism is provided with a limit detection mechanism for detecting the position of the braking wedge (2) so as to realize the detection of the position of the braking wedge (2).

2. A wheel brake device for a rubber-tyred container gantry crane according to claim 1, characterized in that: A protrusion (6) is provided at one end of one brake wedge (2) facing the other brake wedge (2) in the brake mechanism, and at least two protrusions (6) are arranged at intervals on each brake wedge (2); the protrusions (6) on the two brake wedges (2) in the brake mechanism are staggered so that the protrusions (6) on the two brake wedges (2) cooperate with each other to achieve limiting guidance of the brake wedges (2).

3. A wheel brake device for a rubber-tyred container gantry crane according to claim 1, characterized in that: The brake wedge (2) is provided with a curved surface portion (15) cooperating with the tire (16) on one side facing the tire (16), and a flat surface portion cooperating with the vehicle frame (18) on the other side.

4. The wheel brake device of a rubber-tyred container gantry crane according to claim 1, characterized in that: The brake wedge (2) is also provided with a friction rib (9) on the side facing the tire (16), and a plurality of the friction ribs (9) are arranged at intervals, and the length direction of each friction rib (9) is the same as the axial direction of the tire (16).

5. The wheel brake device of a rubber-tyred container gantry crane according to claim 1, characterized in that: A limiting rod (10) is also provided on one end of a brake wedge (2) facing the other brake wedge (2) in the brake mechanism, and a limiting hole cooperating with the limiting rod (10) is provided on the other brake wedge (2). Each brake wedge (2) is provided with at least one limiting rod (10), and the limiting rods (10) on the two brake wedges (2) in the same brake mechanism are staggered.

6. A wheel brake device for a rubber-tyred container gantry crane according to claim 5, characterized in that: The position limit detection mechanism is arranged corresponding to the position limit hole, and one end of the position limit rod (10) extending into the position limit hole is provided with a detection portion capable of cooperating with the position limit detection mechanism.

7. A wheel brake device for a rubber-tyred container gantry crane according to any one of claims 1 to 6, characterized in that: The limit detection mechanism comprises a brake detection limit sensor (8) and a low tire pressure detection limit sensor (7) which are arranged at intervals on the brake wedge (2); the brake detection limit sensor (8) is arranged at a position on one brake wedge (2) in the brake mechanism close to another brake wedge (2); and the low tire pressure detection limit sensor (7) is arranged at a position on one brake wedge (2) in the brake mechanism away from another brake wedge (2).

8. A wheel brake device for a rubber-tyred container gantry crane according to claim 5 or 6, characterized in that: The mounting support (1) is provided with a sliding block (5), the brake wedge block (2) is provided with a sliding groove (3) for accommodating the sliding block (5), and the length direction of the sliding groove (3) is the same as the sliding direction of the brake wedge block (2).

9. A wheel brake device for a rubber-tyred container gantry crane according to claim 8, characterized in that: The sliding block (5) and the limiting rod (10) are arranged in a staggered manner.

10. The wheel brake device of a rubber-tyred container gantry crane according to claim 8, characterized in that: Wedge block stops (17) for limiting the braking wedge block (2) are provided at both ends of the mounting support (1).

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