An emergency brake device for overhead crane gantry

Abstract

The present invention relates to the field of linear motor braking technology, specifically an emergency braking device for a crane gantry, comprising a horizontal frame, a linear motor, a guide rail, a vertical frame and a Z-axis frame, wherein a positive brake box and a negative brake box are arranged inside the left and right sides of the vertical frame and the rear side of the top of the Z-axis frame, and a positive through groove and a negative through groove are respectively provided on the left side of the front of the positive brake box and the right side of the front of the negative brake box, and a fixed cylinder is fixedly installed inside the positive brake box and the negative brake box, and a connecting groove is provided on the front of the outer surface of the fixed cylinder. The present invention drives the brake spring and the brake column to move to a position opposite to the front of the positive through groove or the negative through groove by the moving cylinder, so that the brake column is pushed by the brake spring and then stuck into the inside of the brake groove to complete the instantaneous braking of the vertical frame when the limiting effect is lost. Compared with the prior art, the present invention has the advantages of not being limited by electricity and having a good braking effect.

Description

Technical Field

[0001] The invention relates to the technical field of linear motor braking, in particular to an emergency braking device for a crane gantry. Background Art

[0002] The transmission modes of the linear axis of the overhead crane gantry machine tool are mostly screw transmission, gear rack transmission, linear motor transmission, etc., and the linear motor has become the first choice of many users because of its advantages such as no wear, zero backlash, high efficiency and high precision. The linear motor is mainly composed of primary components and secondary components. When powered on, the secondary components of the linear motor are fixed, and the primary components perform relative linear motion under the action of the generated electromagnetic thrust, but there is no constraint between the primary components and the secondary components, and the movement speed and acceleration are large. In the event of an unexpected failure of the system or a sudden power outage, the primary components will continue to move due to inertia, which poses a very large safety hazard;

[0003] At present, the emergency braking device for the overhead crane gantry mainly utilizes the energy of the DC bus and the electronic brake. However, if the system fails or the power is cut off, this braking method will become ineffective, causing the brake mechanism to be paralyzed and unable to effectively control the start and stop of the linear motor. The electronic brake module in the existing emergency braking device for the overhead crane gantry is used to hold the guide rail tightly when the power is cut off. The huge inertia generated by the movement will cause the brake module to rub against the guide rail, which can easily cause the guide rail to be worn more severely or even damaged.

[0004] At the same time, the existing emergency braking device for the overhead crane gantry generally uses nylon anti-collision blocks to perform the ultimate protection and buffering function after the brake fails. However, after the power is off, the linear motor that relies on inertia to move hits the nylon anti-collision block to brake instantly. This causes a huge vibration after the collision, which is very likely to damage important components such as the spindle, tool and linear motor; therefore, corresponding safety measures must be taken to ensure that the linear motor can brake instantly to ensure the safety of the machine tool. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] The present invention is aimed at the above-mentioned defects existing in the prior art, and specially proposes an emergency braking device for overhead crane gantry, which solves the problems in the prior art that the linear motor cannot effectively perform emergency braking, has poor buffering effect and is easy to damage the guide rail when the system fails or the power is cut off.

[0007] 2. Technical Solution

[0008] In order to solve the above technical problems, the present invention provides an emergency braking device for a crane gantry, comprising a horizontal frame, a linear motor, a guide rail, a vertical frame and a Z-axis frame, wherein positive brake boxes and negative brake boxes are arranged inside the left and right sides of the vertical frame and the rear side of the top of the Z-axis frame, and a positive through groove and a negative through groove are respectively provided on the left side of the front of the positive brake box and the right side of the front of the negative brake box, and a fixed cylinder is fixedly installed inside the positive brake box and the negative brake box, and a connecting groove is provided on the front of the outer surface of the fixed cylinder, and a moving column and an activation spring are movably sleeved inside the fixed cylinder, and a moving cylinder is fixedly installed on the front of the activation spring, and a brake spring and a brake column are movably sleeved inside the moving cylinder, and a brake plate is fixedly installed on the outer side of the top of the horizontal frame and the top of the vertical frame, and a brake groove is provided on the front of the brake plate. When a system failure or power failure occurs, taking the positive direction of the X-axis as an example, Figure 2 and 5 As shown, the longitudinal frame continues to move by inertia under the action of the linear motor but has lost acceleration. At this time, the moving cylinder and the moving column will move in the positive direction of the X-axis due to inertia. When the moving cylinder is facing the positive through groove, the moving cylinder loses the limit inside the positive brake box, and then moves toward the front direction of the positive brake box under the action of the brake spring and quickly gets stuck in the brake groove, thereby completing the braking of the longitudinal frame.

[0009] Preferably, the number of the cross frames is two, the front and rear directions of the cross frames are the positive and negative directions of the X-axis, the linear motor is fixedly installed in the middle of the top surface of the cross frame, guide rails are fixedly installed on the left and right sides of the top of each cross frame, the outer surface of the guide rails is movably connected with a vertical frame, a linear motor is fixedly installed in the middle of the front of the vertical frame, guide rails are fixedly installed on the bottom of the front of the vertical frame and the front side of the top, the vertical frame is movably connected with the Z-axis frame through the guide rails, the left and right directions of the vertical frame are the negative and positive directions of the Y-axis, the number of the positive brake box and the negative brake box are both three, each of the positive brake box and the negative brake box are combined and respectively located on the outer side surface of the top of the cross frame and the rear side of the top of the Z-axis frame, two groups of the positive brake box and the negative brake box are respectively fixedly installed on the inside of the left and right sides of the vertical frame, and the last group of the positive brake box and the negative brake box are fixedly installed on the top of the Z-axis frame. Figure 1 and 2 As shown, under the action of the linear motor, in the X-axis direction: the vertical frame will move at a uniform speed in the front-to-back direction; in the Y-axis direction: the Z-axis frame will move at a uniform speed in the left-to-right direction; when the system is normal or power-off, the energy of the DC bus can be used for rapid braking.

[0010] Preferably, a No. 1 buffer groove is provided on the front and back sides of the horizontal frame, a No. 1 buffer spring and a No. 1 buffer column are movably sleeved inside the No. 1 buffer groove, the No. 1 buffer spring is movably sleeved on the outer surface of the No. 1 buffer column, two ends of the No. 1 buffer spring are respectively fixedly connected to the No. 1 buffer groove and the No. 1 buffer column, a No. 2 buffer plate is fixedly installed on one end of the outer side of the No. 1 buffer column, a No. 2 buffer groove running through the left and right is provided inside the vertical frame, a No. 2 buffer column and a No. 2 buffer spring are movably sleeved on the outer surface of the No. 2 buffer column, two ends of the No. 2 buffer spring are respectively fixedly connected to the No. 2 buffer column and the No. 2 buffer groove, a No. 1 buffer plate is fixedly installed on one end of the outer side of the No. 2 buffer column, a No. 1 contact block is fixedly installed on both sides of the left and right sides of the Z-axis frame, and a No. 2 contact block is fixedly installed on both sides of the front and back sides of the vertical frame. Figure 6 As shown, when the longitudinal frame is at the front and rear limit positions of the guide rail, it will hit the No. 2 buffer plate, driving the No. 1 buffer column to move toward the outside of the No. 1 buffer groove, and absorbing energy by compressing the No. 1 buffer spring. At the same time, the No. 2 buffer plate is greatly buffered by contacting the No. 2 contact block. At the same time, the No. 2 buffer plate itself also moves, thereby reducing the damage to the linear motor at the bottom of the longitudinal frame.

[0011] Preferably, guide grooves are provided on both sides of the left and right sides of the longitudinal frame at the upper and lower sides of the second buffer groove, and guide columns are movably sleeved inside the guide grooves, and one end of the outer side of the guide column is fixedly connected to the first buffer plate. Figure 7 As shown, when the No. 1 buffer plate is driven by the moving Z-axis frame to collide with the No. 1 contact block and carry it, it will drive the No. 2 buffer column to move toward the outside direction of the No. 2 buffer groove, so that the No. 2 buffer spring is compressed and then absorbs energy. The No. 1 buffer plate is provided with a stable guiding function during the movement by adding a guide column. Since the No. 2 buffer column is a cylindrical design, it will be driven by the No. 1 buffer plate to rotate in front of the irregularly shaped No. 1 buffer plate. Therefore, the No. 1 buffer plate needs to be guided and limited by the guide groove and the guide column.

[0012] Preferably, the two ends of the activation spring are respectively fixedly connected to the fixed cylinder and the movable column, the two ends of the brake spring are respectively fixedly connected to the movable cylinder and the brake column, the front end of the brake column is in limited contact with the inner wall of the positive brake box or the negative brake box, and the activation spring is used to prevent the movable column and the movable cylinder from being automatically triggered when the braking function is normal. The elastic coefficient of the activation spring is limited, and the inertia force generated by the movable column and the movable cylinder when the longitudinal frame or the Z-axis frame is normally moved or braked. However, when a power outage occurs, the huge inertia force formed by the huge mass of the longitudinal frame and the Z-axis frame can easily compress the activation spring, thereby activating the automatic braking function of the movable cylinder, the brake spring and the brake column.

[0013] Preferably, each of the positive brake box and the negative brake box has three brake posts inside and are vertically evenly spaced. The brake post inside the positive brake box is located on the right side of the positive through slot, and the brake post inside the negative brake box is located on the left side of the negative through slot. The number of brake posts is three, mainly to improve the reliability of the moving cylinder, the brake spring and the brake post. Figure 4 As shown, each moving cylinder, brake spring and brake column are combined to form three sets of reliable brake mechanisms. This design can effectively prevent one of the brake springs from failing, so that it can be replaced and supplemented by other brake mechanisms to ensure the normal operation of the braking function.

[0014] Preferably, the No. 1 contact block and the No. 2 contact block are both made of rubber, and the No. 1 contact block and the No. 2 contact block are fixed and installed by glue. The No. 2 contact block, the No. 2 buffer plate, the No. 1 buffer plate and the No. 2 buffer plate replace the traditional nylon anti-collision block, and instead cooperate with the No. 1 buffer spring, the No. 1 buffer column, the No. 2 buffer column and the No. 2 buffer spring to absorb energy and displacement through the spring, thereby preventing the linear motor inside the longitudinal frame or the Z-axis frame from being damaged by impact.

[0015] Preferably, the cross-sectional shape of the No. 2 buffer plate is "G"-shaped, and the cross-sectional shape of the No. 1 buffer plate is "G"-shaped after being rotated one hundred and eighty degrees. The No. 2 buffer plate is fixedly connected to the No. 1 buffer column, and the No. 1 buffer plate is fixedly connected to the No. 2 buffer column. When the two are hit, the first contact block they come into contact with is the No. 1 contact block or the No. 2 contact block. The shape design of the No. 2 buffer plate and the No. 2 contact block can effectively perform the connection function, which not only makes the transmission efficiency higher, but also makes it more durable and long-lasting.

[0016] Preferably, when the brake column contacts the inner wall of the positive brake box or the negative brake box, the brake spring is compressed. Figure 5 As shown, this is the state where the moving cylinder, brake spring and brake column are not activated. At this time, the brake spring is compressed and applies pressure to the brake column so that the other end of the brake column is against the inner wall of the positive brake box or the negative brake box and is in limiting contact with it. When the vertical frame and the Z-axis frame are powered off, the DC bus type braking fails. At this time, the moving column and the moving cylinder will move due to inertia and compress the activation spring, so that the brake column and the positive through slot will be opposite to the negative through slot. When the brake column loses its limiting effect, it is pushed out by the brake spring and stuck into the inside of the brake slot to complete the emergency braking function.

[0017] 3. Beneficial Effects

[0018] Compared with the prior art, the present invention realizes the emergency braking function of the longitudinal frame or the Z-axis frame by providing a positive brake box, a brake plate, a brake groove, a negative brake box, a positive through groove, a negative through groove, a fixed cylinder and a connecting groove, etc., and by providing a positive brake box and a negative brake box respectively located on the longitudinal frame and the Z-axis frame, the longitudinal frame and the Z-axis frame can rely on inertia to drive the moving column and the moving cylinder to move in the direction of movement when a system failure or power failure occurs, thereby compressing the activation spring, so that the moving cylinder drives the brake spring and the brake column to move to a position opposite to the front of the positive through groove or the negative through groove, so that the brake column is pushed by the brake spring when the limiting effect is lost and then stuck into the inside of the brake groove to complete the instantaneous braking of the longitudinal frame. Compared with the prior art, the present invention has the advantages of not being limited by electricity and having a good braking effect.

[0019] Furthermore, by providing a brake plate and a brake groove in conjunction with an inertia-activated brake mechanism (a combination of a moving cylinder, a brake spring and a brake column), the braking process of the longitudinal frame or the Z-axis frame is completely independent of the dependence on the guide rail. When the brake mechanism (a combination of a moving cylinder, a brake spring and a brake column) takes effect, the linear motor is powered off and loses acceleration. At this time, the guide rail completes the guiding function through relative contact with the longitudinal frame or the Z-axis frame, thereby minimizing the damage to the guide rail during the braking process of the longitudinal frame or the Z-axis frame.

[0020] The present invention also realizes the buffer protection function of the longitudinal frame and the Z-axis frame by providing a No. 1 buffer plate, a No. 2 buffer plate, a No. 1 contact block, a No. 2 contact block, a No. 1 buffer spring, a No. 1 buffer column, a No. 2 buffer groove, a No. 2 buffer column and a No. 2 buffer spring. In the X-axis direction: by providing the No. 2 contact block and the No. 2 buffer plate, when the longitudinal frame collides with the No. 2 buffer plate at high speed, it is protected by the No. 2 contact block, so that the No. 2 contact block and the No. 2 buffer plate contact and drive the No. 1 buffer column to move, compress the No. 1 buffer spring and absorb the energy generated when the longitudinal frame collides, so as to avoid the longitudinal frame from damaging the internal components due to direct collision; in the Y-axis direction: by providing the guide groove and the guide column to provide the guide function, by providing the No. 1 buffer plate and the No. 1 contact block, when the Z-axis frame collides with the No. 1 buffer plate, it indirectly contacts the No. 1 buffer plate through the No. 1 contact block, and then drives the No. 2 buffer column to move and compress the No. 2 buffer spring, and then absorbs the energy generated by the Z-axis frame when the collision occurs, thereby forming an all-round buffer protection for the longitudinal frame, the Z-axis frame and their internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the front appearance of the structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the partial appearance of the back side of the present invention;

[0024] Figure 4 It is a schematic diagram of the separation of the positive brake box and the negative brake box and their internal structures of the present invention;

[0025] Figure 5 It is a top view cutaway schematic diagram of the positive brake box and the negative brake box of the present invention;

[0026] Figure 6 It is a side cutaway schematic diagram of the cross frame of the present invention;

[0027] Figure 7 It is a partial cutaway schematic diagram of the front side of the present invention;

[0028] Figure 8 is a schematic diagram of the appearance of the brake plate of the present invention;

[0029] Fig. 9 It is a top cutaway schematic diagram of a brake plate of the present invention;

[0030] Fig.10 For the present invention Figure 6 A magnified schematic diagram of the structure in the middle.

[0031] In the figure: 1 is a horizontal frame; 2 is a linear motor; 3 is a guide rail; 4 is a vertical frame; 5 is a Z-axis frame; 6 is a positive brake box; 7 is a brake plate; 8 is a brake groove; 9 is a buffer plate No. 1; 10 is a buffer plate No. 2; 11 is a contact block No. 1; 12 is a negative brake box; 13 is a contact block No. 2; 14 is a positive through groove; 15 is a negative through groove; 16 is a fixed cylinder; 17 is a connecting groove; 18 is an activation spring; 19 is a moving column; 20 is a moving cylinder; 21 is a brake spring; 22 is a brake column; 23 is a buffer groove No. 1; 24 is a buffer spring No. 1; 25 is a buffer column No. 1; 26 is a buffer groove No. 2; 27 is a buffer column No. 2; 28 is a buffer spring No. 2; 29 is a guide groove; 30 is a guide column. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] Embodiment 1:

[0034] like Figure 1-5As shown, the present embodiment provides an emergency braking device for a gantry crane, comprising a horizontal frame 1, a linear motor 2, a guide rail 3, a vertical frame 4 and a Z-axis frame 5, a positive brake box 6 and a negative brake box 12 are arranged inside the left and right sides of the vertical frame 4 and the rear side of the top of the Z-axis frame 5, a positive through groove 14 and a negative through groove 15 are respectively provided on the left side of the front of the positive brake box 6 and the right side of the front of the negative brake box 12, a fixed cylinder 16 is fixedly installed inside the positive brake box 6 and the negative brake box 12, a connecting groove 17 is provided on the front of the outer surface of the fixed cylinder 16, a moving column 19 and an activation spring 18 are movably sleeved inside the fixed cylinder 16, a moving cylinder 20 is fixedly installed on the front of the activation spring 18, a brake spring 21 and a brake column 22 are movably sleeved inside the moving cylinder 20, a brake plate 7 is fixedly installed on the outer side of the top of the horizontal frame 1 and the top of the vertical frame 4, a brake groove 8 is provided on the front of the brake plate 7, when a system failure or power failure occurs, taking the positive direction of the X-axis as an example, as Figure 2 and 5 As shown, the longitudinal frame 4 continues to move by inertia under the action of the linear motor 2 but has lost acceleration. At this time, the moving cylinder 20 and the moving column 19 will move in the positive direction of the X-axis due to inertia. When the moving cylinder 20 is opposite to the positive through groove 14, the moving cylinder 20 loses the limit inside the positive brake box 6, and then moves toward the front direction of the positive brake box 6 under the action of the brake spring 21 and quickly gets stuck in the brake groove 8, thereby completing the braking of the longitudinal frame 4.

[0035] like Figure 1 and Figure 2 As shown, there are two horizontal frames 1, the front and rear directions of the horizontal frames 1 are the positive and negative directions of the X-axis, the linear motor 2 is fixedly installed in the middle of the top surface of the horizontal frame 1, the left and right sides of the top of each horizontal frame 1 are fixedly installed with guide rails 3, the outer surface of the guide rails 3 is movably connected with the vertical frame 4, the middle of the front of the vertical frame 4 is fixedly installed with the linear motor 2, the bottom of the front of the vertical frame 4 and the front side of the top are fixedly installed with guide rails 3, the vertical frame 4 is movably connected with the Z-axis frame 5 through the guide rails 3, the left and right directions of the vertical frame 4 are the negative and positive directions of the Y-axis, the number of the positive brake box 6 and the negative brake box 12 are both three, each The positive brake box 6 and the negative brake box 12 are combined and respectively located on the outer side surface of the top of the horizontal frame 1 and the rear side of the top of the Z-axis frame 5, wherein two groups of positive brake boxes 6 and negative brake boxes 12 are respectively fixedly installed on the inside of the left and right sides of the vertical frame 4, and the last group of positive brake boxes 6 and negative brake boxes 12 are fixedly installed on the top of the Z-axis frame 5. Under the action of the linear motor 2, in the X-axis direction: the vertical frame 4 will move at a uniform speed in the front and rear directions; in the Y-axis direction: the Z-axis frame 5 will move at a uniform speed in the left and right directions; when the system is normal or power-off, the energy of the DC bus can be used for rapid braking.

[0036] Among them, the two ends of the activation spring 18 are fixedly connected to the fixed cylinder 16 and the moving column 19 respectively, and the two ends of the brake spring 21 are fixedly connected to the moving cylinder 20 and the brake column 22 respectively. The front end of the brake column 22 is in limited contact with the inner wall of the positive brake box 6 or the negative brake box 12. The function of the activation spring 18 is to prevent the moving column 19 and the moving cylinder 20 from being automatically triggered when the braking function is normal. The elastic coefficient of the activation spring 18 is limited. When the longitudinal frame 4 or the Z-axis frame 5 is moving or braking normally, the inertia force generated by the moving column 19 and the moving cylinder 20 can be offset. However, when a power outage occurs, the huge inertia force formed by the huge mass of the longitudinal frame 4 and the Z-axis frame 5 can easily compress the activation spring 18, thereby activating the automatic braking function of the moving cylinder 20, the brake spring 21 and the brake column 22.

[0037] like Figure 4 As shown, there are three brake columns 22 inside each positive brake box 6 and negative brake box 12 and they are vertically evenly spaced. The brake column 22 inside the positive brake box 6 is located on the right side of the positive through slot 14, and the brake column 22 inside the negative brake box 12 is located on the left side of the negative through slot 15. There are three brake columns 22, mainly to improve the reliability of the moving cylinder 20, the brake spring 21 and the brake column 22. Each moving cylinder 20, the brake spring 21 and the brake column 22 are combined to form three groups of reliable braking mechanisms. Such a design can effectively prevent one of the brake springs 21 from failing, so that it can be replaced and supplemented by other brake mechanisms to ensure the normal operation of the braking function.

[0038] like Figure 5 As shown, when the brake column 22 is in limiting contact with the inner wall of the positive brake box 6 or the negative brake box 12, the brake spring 21 is compressed. This is the inactive state of the moving cylinder 20, the brake spring 21 and the brake column 22. At this time, the brake spring 21 is compressed and applies pressure to the brake column 22 so that the other end of the brake column 22 is against the inner wall of the positive brake box 6 or the negative brake box 12 and in limiting contact therewith. When the vertical frame 4 and the Z-axis frame 5 are powered off, the DC bus-type braking fails. At this time, the moving column 19 and the moving cylinder 20 will move due to inertia and compress the activation spring 18, so that the brake column 22 and the positive through groove 14 and the negative through groove 15 are opposite to each other. When the brake column 22 loses its limiting effect, it is pushed out by the brake spring 21 and stuck into the inside of the brake groove 8 to complete the emergency braking function.

[0039] Embodiment 2:

[0040] Compared with Example 1, Figure 7 and Figure 8As shown, the front and back sides of the horizontal frame 1 are provided with a No. 1 buffer groove 23, the interior of the No. 1 buffer groove 23 is movably sleeved with a No. 1 buffer spring 24 and a No. 1 buffer column 25, the No. 1 buffer spring 24 is movably sleeved on the outer surface of the No. 1 buffer column 25, the two ends of the No. 1 buffer spring 24 are respectively fixedly connected to the No. 1 buffer groove 23 and the No. 1 buffer column 25, and the No. 2 buffer plate 10 is fixedly installed at one end of the outer side of the No. 1 buffer column 25, and the interior of the vertical frame 4 is provided with a No. 2 buffer groove 26 that runs through the left and right sides. The interior of the No. 2 buffer groove 26 is movably sleeved with a No. 2 buffer column 27 and a No. 2 buffer spring 28, the No. 2 buffer spring 28 is movably sleeved on the outer surface of the No. 2 buffer column 27, the two ends of the No. 2 buffer spring 28 are respectively fixedly connected to the No. 2 buffer column 27 and the No. 2 buffer groove 26, and the No. 1 buffer plate 9 is fixedly installed at one end of the outer side of the No. 2 buffer column 27, the No. 1 contact block 11 is fixedly installed on both the left and right sides of the Z-axis frame 5, and the No. 2 contact block 13 is fixedly installed on both the left and right sides of the front and back sides of the longitudinal frame 4. Figure 6 As shown, when the longitudinal frame 4 is at the front and rear limit positions of the guide rail 3, it will hit the No. 2 buffer plate 10, driving the No. 1 buffer column 25 to move toward the outside of the No. 1 buffer groove 23, and absorbing energy by compressing the No. 1 buffer spring 24. At the same time, the No. 2 buffer plate 10 is greatly buffered by contacting the No. 2 contact block 13. At the same time, the No. 2 buffer plate 10 itself also moves, thereby reducing the damage to the linear motor at the bottom of the longitudinal frame 4.

[0041] Guide grooves 29 are provided on both sides of the longitudinal frame 4 at the upper and lower sides of the second buffer groove 26. A guide column 30 is movably sleeved inside the guide groove 29. One end of the outer side of the guide column 30 is fixedly connected to the first buffer plate 9. Figure 7 As shown, when the No. 1 buffer plate 9 is driven by the moving Z-axis frame 5 to collide with the No. 1 contact block 11, it will drive the No. 2 buffer column 27 to move toward the outside direction of the No. 2 buffer groove 26, so that the No. 2 buffer spring 28 is compressed and then absorbs energy. The No. 1 buffer plate 9 is provided with a stable guiding function during the movement by adding a guide column 30. Since the No. 2 buffer column 27 is a cylindrical design, it will be driven by the No. 1 buffer plate 9 to rotate in front of the irregularly shaped No. 1 buffer plate 9. Therefore, the No. 1 buffer plate 9 needs to be guided and limited by the guide groove 29 and the guide column 30.

[0042] The No. 1 contact block 11 and the No. 2 contact block 13 are both made of rubber, and the No. 1 contact block 11 and the No. 2 contact block 13 are fixed and installed by glue. The No. 2 contact block 13, the No. 2 buffer plate 10, the No. 1 buffer plate 9 and the No. 2 buffer plate 10 replace the traditional nylon anti-collision block, and instead cooperate with the No. 1 buffer spring 24, the No. 1 buffer column 25, the No. 2 buffer column 27 and the No. 2 buffer spring 28 to absorb energy and displacement through the spring to complete the energy absorption, thereby preventing the linear motor inside the vertical frame 4 or the Z-axis frame 5 from being damaged by impact.

[0043] The cross-sectional shape of the No. 2 buffer plate 10 is "Г"-shaped, and the cross-sectional shape of the No. 1 buffer plate 9 is "Г"-shaped after being rotated one hundred and eighty degrees. The No. 2 buffer plate 10 is fixedly connected to the No. 1 buffer column 25, and the No. 1 buffer plate 9 is fixedly connected to the No. 2 buffer column 27. When the two are hit, the first contact block they come into contact with is the No. 1 contact block 11 or the No. 2 contact block 13. The shape design of the No. 2 buffer plate 10 and the No. 2 contact block 13 can effectively perform the connection function, which not only makes the transmission efficiency higher, but also makes it more durable and long-lasting.

[0044] The specific operation process is as follows: the linear motor 2 is powered on, and under the action of the linear motor 2, the vertical frame 4 moves forward and backward, and the Z-axis frame 5 moves left and right;

[0045] When the system fails or loses power, Figure 6 As shown:

[0046] In the X-axis direction, the longitudinal frame 4 loses acceleration due to power failure. At this time, the moving column 19 and the moving cylinder 20 will move in the original moving direction due to inertia and compress the activation spring 18, so that the brake column 22 is directly opposite to the positive through groove 14 or the negative through groove 15. Then, the brake column 22 loses the limit from the positive brake box 6 and the negative brake box 12, and moves to the outside direction of the positive brake box 6 or the negative brake box 12 under the action of the brake spring 21 and is stuck in the brake groove 8 to complete the emergency braking of the longitudinal frame 4.

[0047] In the Y-axis direction, the Z-axis frame 5 loses acceleration due to power failure. At this time, the moving column 19 and the moving cylinder 20 will move in the original moving direction due to inertia and compress the activation spring 18, so that the brake column 22 is directly opposite to the positive through groove 14 or the negative through groove 15. Then, the brake column 22 loses the limit from the positive brake box 6 and the negative brake box 12, and moves to the outside direction of the positive brake box 6 or the negative brake box 12 under the action of the brake spring 21 and is stuck in the brake groove 8 to complete the emergency braking of the Z-axis frame 5;

[0048] When the vertical frame 4 or the Z-axis frame 5 hits the second buffer plate 10 or the first buffer plate 9:

[0049] In the X-axis direction, Figure 6 As shown, when the vertical frame 4 hits the second buffer plate 10, it will drive the second contact block 13 to contact the second buffer plate 10, drive the first buffer column 25 to move toward the outside direction of the first buffer groove 23 and compress the first buffer spring 24, so as to absorb the vibration and energy generated by the impact of the vertical frame 4;

[0050] In the Y-axis direction, Figure 2 and 7As shown, when the Z-axis frame 5 collides with the No. 1 buffer plate 9, it will drive the No. 1 contact block 11 to contact the No. 1 buffer plate 9, drive the No. 2 buffer column 27 to move toward the outside direction of the No. 2 buffer groove 26 and compress the No. 2 buffer spring 28, thereby absorbing the vibration and energy generated by the impact of the Z-axis frame 5.

[0051] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An emergency brake device for a crane gantry, comprising a horizontal frame (1), a linear motor (2), a guide rail (3), a vertical frame (4) and a Z-axis frame (5), characterized in that: A positive brake box (6) and a negative brake box (12) are arranged inside the left and right sides of the longitudinal frame (4) and on the rear side of the top of the Z-axis frame (5); a positive through groove (14) and a negative through groove (15) are respectively provided on the left side of the front of the positive brake box (6) and the right side of the front of the negative brake box (12); a fixed cylinder (16) is fixedly installed inside the positive brake box (6) and the negative brake box (12); a connecting groove (17) is provided on the front of the outer surface of the fixed cylinder (16); a moving column (19) and an activation spring (18) are movably sleeved inside the fixed cylinder (16); a moving cylinder (20) is fixedly installed on the front of the activation spring (18); a brake spring (21) and a brake column (22) are movably sleeved inside the moving cylinder (20); a brake plate (7) is fixedly installed on the outer side of the top of the transverse frame (1) and the top of the longitudinal frame (4); a brake groove (8) is provided on the front of the brake plate (7).

2. The emergency brake device for a gantry crane according to claim 1, characterized in that: There are two horizontal frames (1), the front-to-back direction of the horizontal frame (1) is the positive and negative direction of the X-axis, the linear motor (2) is fixedly mounted in the middle of the top surface of the horizontal frame (1), the left and right sides of the top of each horizontal frame (1) are fixedly mounted with guide rails (3), the outer surface of the guide rail (3) is movably connected with a vertical frame (4), the middle of the front of the vertical frame (4) is fixedly mounted with a linear motor (2), the bottom of the front of the vertical frame (4) and the front side of the top are fixedly mounted with guide rails (3), and the vertical frame (4) is movably connected with a guide rail (3) through the guide rail (3). A Z-axis frame (5), wherein the left and right directions of the longitudinal frame (4) are the negative and positive directions of the Y-axis, and the number of the positive brake box (6) and the negative brake box (12) are both three, and each of the positive brake box (6) and the negative brake box (12) are combined and respectively located on the outer side surface of the top of the transverse frame (1) and the rear side of the top of the Z-axis frame (5), wherein two groups of the positive brake box (6) and the negative brake box (12) are respectively fixedly installed inside the left and right sides of the longitudinal frame (4), and the last group of the positive brake box (6) and the negative brake box (12) is fixedly installed on the top of the Z-axis frame (5).

3. The emergency brake device for a gantry crane according to claim 1, characterized in that: The front and back sides of the horizontal frame (1) are both provided with a No. 1 buffer groove (23), the interior of the No. 1 buffer groove (23) is movably sleeved with a No. 1 buffer spring (24) and a No. 1 buffer column (25), the No. 1 buffer spring (24) is movably sleeved on the outer surface of the No. 1 buffer column (25), the two ends of the No. 1 buffer spring (24) are respectively fixedly connected to the No. 1 buffer groove (23) and the No. 1 buffer column (25), and a No. 2 buffer plate (10) is fixedly installed on one end of the outer side of the No. 1 buffer column (25), the interior of the vertical frame (4) is provided with a No. 2 buffer groove (26) penetrating from left to right, the No. 1 buffer spring (24) is movably sleeved on the outer surface of the No. 1 buffer column (25), the two ends of the No. 1 buffer spring (24) are respectively fixedly connected to the No. 1 buffer groove (23) and the No. 1 buffer column (25), and the No. 2 buffer plate (10) is fixedly installed on the outer side of the No. 1 buffer column (25), the No. 2 buffer groove (26) is provided inside the vertical frame (4) and is penetrated from left to right, A No. 2 buffer column (27) and a No. 2 buffer spring (28) are movably sleeved inside the No. 2 buffer groove (26); the No. 2 buffer spring (28) is movably sleeved on the outer surface of the No. 2 buffer column (27); the two ends of the No. 2 buffer spring (28) are respectively fixedly connected to the No. 2 buffer column (27) and the No. 2 buffer groove (26); a No. 1 buffer plate (9) is fixedly installed on one end of the outer side of the No. 2 buffer column (27); a No. 1 contact block (11) is fixedly installed on both the left and right sides of the Z-axis frame (5); and a No. 2 contact block (13) is fixedly installed on both the left and right sides of the front and back sides of the longitudinal frame (4).

4. The emergency brake device for a gantry crane according to claim 3, characterized in that: The left and right sides of the longitudinal frame (4) are provided with guide grooves (29) at the upper and lower sides of the second buffer groove (26), and the guide groove (29) is movably sleeved with a guide column (30), and the outer end of the guide column (30) is fixedly connected to the first buffer plate (9).

5. The emergency brake device for a gantry crane according to claim 1, characterized in that: The two ends of the activation spring (18) are respectively fixedly connected to the fixed cylinder (16) and the movable column (19), the two ends of the brake spring (21) are respectively fixedly connected to the movable cylinder (20) and the brake column (22), and the front end of the brake column (22) is in limited contact with the inner wall of the positive brake box (6) or the negative brake box (12).

6. The emergency brake device for a gantry crane according to claim 1, characterized in that: There are three brake columns (22) inside each of the positive brake box (6) and the negative brake box (12) and they are vertically evenly spaced. The brake columns (22) inside the positive brake box (6) are located on the right side of the positive through slot (14), and the brake columns (22) inside the negative brake box (12) are located on the left side of the negative through slot (15).

7. The emergency brake device for a gantry crane according to claim 3, characterized in that: The first contact block (11) and the second contact block (13) are both made of rubber, and the first contact block (11) and the second contact block (13) are fixedly installed by glue.

8. The emergency brake device for a gantry crane according to claim 3, characterized in that: The cross-sectional shape of the second buffer plate (10) is a "G" shape, and the cross-sectional shape of the first buffer plate (9) is a "G" shape rotated 180 degrees.

9. The emergency brake device for a gantry crane according to claim 1, characterized in that: When the brake column (22) is in limiting contact with the inner wall of the positive brake box (6) or the negative brake box (12), the brake spring (21) is compressed.

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