Door operators and elevators

Abstract

This invention discloses a gantry crane, comprising a base plate, a first sliding plate and a second sliding plate slidably disposed on the base plate, and a drive mechanism for driving the first and second sliding plates to slide on the base plate. The drive mechanism includes a power component, a traction rope, a first rolling element, and a second rolling element. The first and second rolling elements are rotatably disposed at opposite ends of the base plate. The traction rope is sleeved on the two rolling elements. The first and second sliding plates are fixed to the traction rope. The power component drives the traction rope to move, thereby causing the first and second sliding plates to move closer together or further apart. This invention eliminates the motor, synchronous belt, synchronous belt clamp, and synchronous belt driven adjustment wheel assembly found in traditional gantry crane structures. The gantry crane structure of this application directly applies force to the traction rope via the power component, greatly simplifying the gantry crane structure and allowing for a smaller base plate.

Description

Technical Field

[0001] The present invention specifically relates to a door operator and an elevator including the door operator. Background Technology

[0002] The existing elevator door operator structure includes a door operator base plate assembly, motor, synchronous belt, synchronous belt clamp, synchronous belt driven adjustment wheel assembly, linkage steel wire rope system, left and right slide plate assemblies and door knife assembly, etc. The large number of components and complex structure result in a large space occupation and high cost of the entire door operator, and complicated installation, commissioning and subsequent maintenance. Summary of the Invention

[0003] In view of this, in order to overcome the shortcomings of the prior art, the present invention provides an improved door operator with simplified components and structure, reduced door operator base plate height, lower cost, and smaller space occupation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A gantry crane includes a base plate, a first sliding plate and a second sliding plate slidably disposed on the base plate, and a drive mechanism for driving the first and second sliding plates to slide on the base plate. The drive mechanism includes a power component, a traction rope, a first rolling element, and a second rolling element. The first and second rolling elements are respectively rotatably disposed at both ends of the base plate. The traction rope is sleeved on the two rolling elements. The first and second sliding plates are fixed to the traction rope. The power component is used to drive the traction rope to move, thereby causing the first and second sliding plates to move closer to or further apart from each other.

[0006] In this invention, the power component directly drives the traction rope. The first and second sliding plates are directly fixed to the traction rope, thus the power component and the traction rope directly drive the movement of the first and second sliding plates. This eliminates components such as the motor, synchronous belt, synchronous belt clamp, and synchronous belt driven adjustment wheel assembly found in traditional gantry cranes. The gantry crane's components and structure are simplified, occupying less space, are lighter, lower in cost, and easier to maintain and repair.

[0007] According to some preferred embodiments of the present invention, the power assembly includes a first drive body disposed on the traction rope and a second drive body disposed on the base plate. The traction rope passes through the second drive body, and the second drive body drives the first drive body to move within the second drive body, thereby driving the traction rope to move. By driving the first drive body to move via the second drive body, which is disposed on the traction rope, the traction rope can be driven to move, thus moving the first and second slide plates.

[0008] According to some preferred embodiments of the present invention, the first driving body and / or the second driving body is a permanent magnet or a non-permanent magnet. The first driving body and the second driving body are driven by magnetic force. For example, the second driving body is set to be a non-permanent magnet and the first driving body is set to be a permanent magnet. By controlling the non-permanent magnet second driving body, the motion state of the first driving body is controlled, thereby controlling the movement of the traction rope and the movement of the first and second sliding plates.

[0009] According to some preferred embodiments of the present invention, the first driving body and / or the second driving body is a magnet or a solenoid.

[0010] According to some preferred embodiments of the present invention, the first driving element is a magnet, and the second driving element is a solenoid. The first driving element of the magnet is disposed within the second driving element of the solenoid, and the movement of the first driving element within the second driving element can be controlled by controlling whether the solenoid is energized, the magnitude of the current, and the direction of the current.

[0011] According to some preferred embodiments of the invention, the solenoid comprises a loop coil and / or one or more wound coils formed by winding a conductor, wherein the extension direction of the traction rope is the same as the axial direction of the loop coil or the wound coil. A single coil formed by winding a single conductor is the simplest structural form. As described above, the movement of the first driving body can be controlled by controlling whether the coil is energized, the magnitude of the current, and the direction of the current. The coil in this application can be a wound coil with multiple turns or a loop coil.

[0012] In some embodiments, the solenoid includes a plurality of coils (annular coils or wound coils) arranged along the length such that the centerlines of the plurality of coils coincide, so that the traction rope and the first drive body thereon pass through the coils.

[0013] Preferably, the solenoid of the second driving body includes a tube body and a wound coil wound on the tube body, the structure of which is as described above. A channel is formed within the tube body for the movement of the first driving body and the traction rope. To further match the movement of the slide plate and the door panel, the length of the tube body needs to be designed. Simultaneously, both ends of the tube body are semi-closed and equipped with end panels. These end panels only have through holes for the traction rope to pass through. The first driving body is completely disposed within the channel of the tube body and moves only within this channel. The end panels of the tube body can limit and block the first driving body.

[0014] In other embodiments, the solenoid includes a tube body and a wound coil. A receiving groove is formed on the wall of the tube body, and the wound coil is disposed within the receiving groove. Multiple wound coils are arranged along the length of the tube body, and the length direction of the wound coils is perpendicular to the length direction of the tube body. That is, multiple wound coils are arranged on the wall of the tube body, and the length direction of the wound coils faces the centerline of the tube body. Preferably, the tube body is cylindrical, in which case the length direction of the wound coils is the same as the radial direction of the tube body.

[0015] Preferably, the tube is divided into multiple sections along its length, and the cross-sections of the winding coils in each section are the same or different, so as to achieve gradual control of the first driving body during its movement.

[0016] More preferably, the tube body comprises two opposing portions, with coils on the two portions located on different cross-sections of the tube body. Viewed in cross-section, the coil on one portion corresponds to the gap between two coils on the other portion.

[0017] The aforementioned arrangement of multiple coils allows for gradual control of the first driving body by energizing coils at different positions during its movement. This results in greater precision, reduced energy consumption, and a smoother door opening and closing process.

[0018] According to some preferred embodiments of the present invention, the first driving body includes a power source, a magnet, and a conductor, wherein the conductor is respectively disposed on the positive and negative terminals of the power source; the second driving body includes a coil, the conductor electrically connecting the power source and a portion of the coil, wherein the axial length of the coil is greater than the length between the conductors on the positive and negative terminals of the power source. Preferably, the magnet and the conductor are integrally disposed, such as using a magnet.

[0019] According to some preferred embodiments of the present invention, a door knife mechanism is provided on the first or second sliding plate, the door knife mechanism including a fixed plate, a rotating rod rotatably disposed on the fixed plate, and a first knife arm and a second knife arm respectively disposed at both ends of the rotating rod.

[0020] According to some preferred embodiments of the present invention, a slider is slidably disposed on the upper end of the fixed plate. The slider is fixed to the traction rope by a fixing pin, and the traction rope is used to drive the slider to reciprocate between the first cutter arm and the second cutter arm. Specifically, a guide rail is provided at the upper end of the fixed plate, and a guide groove is provided on the back of the slider. The guide groove and the guide rail cooperate to realize the sliding of the slider on the fixed plate. When the slider slides on the fixed plate, the first driving body moves within the second driving body, the traction rope moves, and the slider moves, but the relative position between the two sliding plates remains unchanged.

[0021] According to some preferred embodiments of the present invention, a rotating member is rotatably disposed on the first or second sliding plate, the rotating member being provided with a limiting pin, and a limiting groove cooperating with the limiting pin is provided on the sliding plate. The rotating member is provided so that when the rotating member rotates, the first driving body moves within the second driving body, the traction rope moves, and the rotating member rotates, but the relative position between the two sliding plates remains unchanged.

[0022] According to some preferred embodiments of the invention, an elastic element is provided between the rotating member and the sliding plate, the elastic element being used to provide a tendency for the lower end of the rotating member to rotate towards the other sliding plate. The elastic element is preferably a torsion spring, with a pivot for the rotating member to rotate on the first or second sliding plate, the torsion spring being sleeved on the pivot, and its two ends abutting against the sliding plate and the rotating member respectively, providing an elastic restoring force.

[0023] According to some preferred embodiments of the invention, the door knife mechanism is disposed on one of the first or second sliding plates, and the rotating member is disposed on the remaining one of the first or second sliding plates. Preferably, the door knife mechanism is disposed on the first sliding plate, the rotating member is disposed on the second sliding plate, and a torsion spring is used to provide a force for the lower end of the rotating member to rotate toward the first sliding plate.

[0024] According to some preferred embodiments of the present invention, the horizontal plane height of the first and second rolling members is higher than the horizontal plane height of the first or second sliding plate; the slider is fixed to the upper part of the traction rope, and the rotating member is fixed to the lower part of the traction rope. That is, the traction rope is arranged above the sliding plate. Through the component and structural arrangement in this application, the size of the base plate and the entire gantry crane can be effectively reduced.

[0025] According to some preferred embodiments of the present invention, the door operator has a closed state, a transition state, and an open state; in the closed state, the first sliding plate and the second sliding plate are close to each other; in the open state, the first sliding plate and the second sliding plate are far apart from each other; in the transition state, the relative positions of the first sliding plate and the second sliding plate remain fixed, the slider moves on the fixed plate, and the rotating member rotates; the drive mechanism is used to drive the door operator to be in different states or to switch between different states.

[0026] The present invention also provides an elevator including the door operator as described above.

[0027] Compared with the prior art, the advantages of the present invention are as follows: The door operator of the present invention eliminates the motor, synchronous belt, synchronous belt clamp, and synchronous belt driven adjustment wheel assembly in the traditional door operator structure. The door operator structure of the present application directly applies force to the traction rope through the power component, which greatly simplifies the door operator structure. At the same time, the size of the door operator base plate can be reduced. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the door operator in the open state according to a preferred embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the gantry crane in a transition state according to a preferred embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the door operator in the closed state according to a preferred embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the drive mechanism in a preferred embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the solenoid structure in the gantry crane according to a preferred embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the solenoid structure in another preferred embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the tube body in another preferred embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the door knife mechanism in the open state according to a preferred embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the door knife mechanism in the closed state according to a preferred embodiment of the present invention;

[0038] Figure 10 This is a schematic diagram of the second sliding plate and rotating member in the open state according to a preferred embodiment of the present invention;

[0039] Figure 11 This is a schematic diagram of the second sliding plate and rotating component in the closed state according to a preferred embodiment of the present invention;

[0040] Figure 12 This is a schematic diagram of the structure of the second sliding plate and the elastic element according to a preferred embodiment of the present invention;

[0041] Figure 13 This is a schematic diagram of the locking mechanism in the open state in a preferred embodiment of the present invention;

[0042] Figure 14 This is a schematic diagram of the locking mechanism in the closed state in a preferred embodiment of the present invention;

[0043] Figure 15 This is a schematic diagram of the solenoid structure in another preferred embodiment of the present invention;

[0044] The components include: door operator-1, base plate-2, guide rail-21, first sliding plate-31, second sliding plate-32, hanging plate-321, roller-322, drive mechanism-4, power component-41, traction rope-42, first rolling element-43, second rolling element-44, first drive body-45, second drive body-46, coil-461, tube-462, receiving groove-463, channel-464, door knife mechanism-5, fixed plate-51, rotating rod-52, first knife arm-53, second knife arm-54, slider-55, fixed pin-56, rotating element-61, limit pin-62, limit groove-63, elastic element-64, rotating shaft-65, locking mechanism-7, locking pin-71, locking rod-72, and unlocking plate-73. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0047] The elevator in this embodiment includes a door operator 1 and other conventional components in the art, such as a car, traction machine, counterweight, etc. (Refer to...) Figures 1-12In this embodiment, the door operator 1 includes a base plate 2, a first sliding plate 31 and a second sliding plate 32 slidably mounted on the base plate 2, a door knife mechanism 5 mounted on the first sliding plate 31, a rotating component 61 mounted on the second sliding plate 32, and a drive mechanism 4 for driving the first sliding plate 31 and the second sliding plate 32 to slide on the base plate 2. The base plate 2 is provided with a guide rail 21 for the sliding plates to move, and the sliding plates are provided with rollers 322 and hanging plates 321 that cooperate with the guide rail 21.

[0048] The door operator 1 has a closed state, a transition state, and an open state. The drive mechanism 4 is used to drive the door operator 1 to be in different states or to switch between different states. Specifically, in the closed state, the first slide plate 31 and the second slide plate 32 are close to each other and fit together; in the open state, the first slide plate 31 and the second slide plate 32 are separated from each other and move away; in the transition state, the relative positions of the first slide plate 31 and the second slide plate 32 remain fixed, the slider 55 on the door knife mechanism 5 moves on the fixed plate 51, and the rotating member 61 rotates on the second slide plate 32.

[0049] like Figure 1-7 As shown, the drive mechanism 4 includes a power component 41, a traction rope 42, a first rolling element 43, and a second rolling element 44. The first rolling element 43 and the second rolling element 44 are roller structures, respectively rotatably mounted at both ends of the base plate 2 along its length. The traction rope 42 is sleeved on the two rolling elements. The first sliding plate 31 and the second sliding plate 32 are fixed to the traction rope 42. The power component 41 is used to drive the traction rope 42 to move, thereby causing the first sliding plate 31 and the second sliding plate 32 to move closer or further apart. The horizontal plane of the first rolling element 43 and the second rolling element 44 is higher than the horizontal plane of the first sliding plate 31 or the second sliding plate 32. The slider 55 on the door knife mechanism 5 is fixed to the upper part of the traction rope 42, and the rotating element 61 is fixed to the lower part of the traction rope 42. That is, the traction rope 42 is positioned above the sliding plate. Through the component and structural arrangement in this embodiment, the size of the base plate 2 and the entire door machine 1 can be effectively reduced.

[0050] In this embodiment, the power component 41 directly drives the traction rope 42. The first slide plate 31 and the second slide plate 32 are directly fixed to the traction rope 42, thereby directly driving the movement of the first slide plate 31 and the second slide plate 32 through the power component 41 and the traction rope 42. This eliminates components such as the motor, synchronous belt, synchronous belt clamp, and synchronous belt driven adjustment wheel assembly found in traditional gantry cranes. The gantry crane's components and structure are simplified, occupying less space, being lighter, lower in cost, and facilitating subsequent maintenance and repair.

[0051] The power assembly 41 includes a first drive body 45 mounted on a traction rope 42 and a second drive body 46 mounted on a base plate 2. The traction rope 42 passes through the second drive body 46, and the second drive body 46 drives the first drive body 45 to move within the second drive body 46, thereby driving the traction rope 42 to move. By driving the first drive body 45 to move via the second drive body 46, the first drive body 45, mounted on the traction rope 42, can drive the traction rope 42 to move, thus moving the first slide plate 31 and the second slide plate 32.

[0052] In this embodiment, the first driving body 45 is a magnet, and the second driving body 46 is a solenoid. The first driving body 45 of the magnet is disposed inside the second driving body 46 of the solenoid. By controlling whether the solenoid is energized, the magnitude of the current, and the direction of the current, the movement of the first driving body 45 within the second driving body 46 can be controlled.

[0053] Due to electromagnetic conversion, in some other embodiments, the first drive body 45 and / or the second drive body 46 can be configured as permanent magnets (magnets) or non-permanent magnets (energized coils). For example, if the second drive body 46 is configured as a non-permanent magnet and the first drive body 45 as a permanent magnet, the movement state of the first drive body 45 can be controlled by controlling the non-permanent magnet second drive body 46, thereby controlling the movement of the traction rope 42 and the movement of the first slide plate 31 and the second slide plate 32. Alternatively, the first drive body 45 can be configured as an energized coil.

[0054] like Figure 6 As shown, in this embodiment, the solenoid of the second drive body 46 includes a tube body 462 and multiple wound coils 461 wound on the tube body 462. The multiple wound coils 461 are arranged along the length direction, such that the center lines of the multiple wound coils 461 coincide. The extension direction of the traction rope 42 is the same as the axial direction of the wound coils 461, so that the traction rope 42 and the first drive body 45 on it pass through the wound coils 461.

[0055] The tube body 462 has a channel 464 formed inside for the movement of the first drive body 45 and the traction rope 42. In order to further match the movement of the slide and the door panel, the length of the tube body 462 needs to be designed. At the same time, the two ends of the tube body 462 are semi-closed and are provided with end panels. The end panels are only provided with through holes for the traction rope 42 to pass through. The first drive body 45 is completely set in the channel 464 of the tube body 462 and moves only in the channel 464. The end panels of the tube body 462 can limit and block the first drive body 45.

[0056] like Figure 5 As shown, the multiple coils 461 described above can also be replaced by a single coil 461 formed by winding a single wire. The axial length of the single wound coil 461 should be greater than twice or more the travel of the slide plate in the opening and closing state.

[0057] like Figure 7 As shown, in some embodiments, the solenoid includes a tube body 462 and a wound coil 461. A receiving groove 463 is formed on the wall of the tube body 462, and the wound coil 461 is disposed within the receiving groove 463. Multiple wound coils 461 are arranged along the length direction of the tube body 462, and the length direction of each wound coil 461 is perpendicular to the length direction of the tube body 462. That is, multiple wound coils 461 are disposed on the wall of the tube body 462, and the length direction of the wound coils 461 faces the centerline of the tube body 462. Preferably, the tube body 462 is cylindrical, in which case the length direction of the wound coils 461 is the same as the radial direction of the tube body 462.

[0058] like Figure 15 As shown, in some embodiments, the solenoid includes a tube body 462 and annular coils 461 evenly spaced along the length of the tube body. Each annular coil 461 can be individually energized and the magnitude and direction of the current can be controlled. By controlling the energization of different annular coils 461, the motion control of the first driving body in the channel can be achieved. An annular coil (or sheet coil) is a single coil located on the same plane. Multiple annular coils or sheet coils can also be bonded together to form a coil group to achieve the same function.

[0059] In other embodiments, the solenoid of the second driving body 46 includes a coil 461, and the first driving body 45 includes a power source, a magnet (permanent magnet or non-permanent magnet), and a conductor. The conductor is disposed at the positive and negative terminals of the power source and is in electrical contact with the coil. As the first driving body 45 moves continuously within the second driving body 46, the conductor contacts the power source with different positions of the coil to provide local power to the coil, generating a magnetic field. This, combined with the magnet of the first driving body, causes the first driving body 45 to move continuously within the second driving body 46. For ease of implementation, a conductive magnet can be selected to provide both magnetic field and conductivity. Specifically, a relatively simple implementation is illustrated by attaching one or more magnets to both ends of a battery (such as an AA or AAA dry cell battery or a battery assembly capable of controlling the release, magnitude, and direction of current) to form the first driving body 45. This first driving body 45 is then placed within the second driving body 46, with the magnet in electrical contact with the coil of the second driving body. The magnet conducts electricity between the battery and the contacted portion of the coil, generating a magnetic field that drives the first driving body 45 to move. In this case, the second drive unit 46 does not require additional power.

[0060] The tube body 462 comprises two opposing upper and lower sections, with coils 461 on the two sections located at different radial cross-sections of the tube body 462. Figure 7 In the cross-sectional view, the coil 461 on the upper tube 462 is correspondingly positioned in the gap between the two coils 461 on the lower tube 462.

[0061] By employing the aforementioned arrangement of multiple coils 461, the first driving body 45 can be gradually controlled by energizing coils 461 at different positions during its movement. This allows for more precise control, reduced energy consumption, and smoother door opening and closing. Simultaneously, the end panel of the tube 462 can restrict the movement of the first driving body 45 within the channel 464, ensuring safety in conjunction with the travel of the traction rope 42 and the sliding plate.

[0062] like Figure 1-3 and Figure 8-9 As shown, the door knife mechanism 5 includes a fixed plate 51, a rotating rod 52 rotatably mounted on the fixed plate 51, and a first knife arm 53 and a second knife arm 54 respectively mounted at both ends of the rotating rod 52. A slider 55 is slidably mounted on the upper end of the fixed plate 51. The slider 55 is fixed to the traction rope 42 by a fixing pin 56. The traction rope 42 is used to drive the slider 55 to reciprocate between the first knife arm 53 and the second knife arm 54.

[0063] Specifically, a guide rail is provided at the upper end of the fixed plate 51, and a guide groove is provided on the back of the slider 55. The guide groove and the guide rail cooperate to enable the slider 55 to slide on the fixed plate 51. When the slider 55 slides on the fixed plate 51, the first driving body 45 moves within the second driving body 46, the traction rope 42 moves, and the slider 55 moves, but the relative position between the two slide plates remains unchanged. After the traction rope 42 drives the slider 55 to move into position on the fixed plate 51, the slider 55 can no longer move on the fixed plate 51. At this time, while the traction rope 42 continues to move, the fixing pin 56, the slider 55, the fixed plate 51, and the first slide plate 31 move as a whole, realizing the movement of the slide plate, thereby realizing the opening and closing of the door.

[0064] Preferably, an elastic element, such as a spring, is provided between the upper right side of the slider 55 and the fixed plate 51 to provide a tendency for the slider 55 to move towards the left end of the fixed plate 51. When the slider 55 is at the left end of the fixed plate 51, the traction rope 42 can drive the door knife mechanism 5 and the first sliding plate 31 to move. When the door is closed, the first sliding plate 31 and the second sliding plate 32 contact each other, and the traction rope 42 continues to move, overcoming the elastic force of the elastic element, so that the slider 55 moves from the left end of the fixed plate 51 to the right end, thereby completely closing the door and ensuring safety.

[0065] like Figure 1-3 and Figure 10-12As shown, the second slide plate 32 is provided with a rotating shaft 65 for the rotating member 61 to rotate. A limiting pin 62 is provided at the lower part of the rotating member 61, and an arc-shaped limiting groove 63 is provided on the second slide plate 32 to cooperate with the limiting pin 62. Meanwhile, an elastic member 64 is provided between the rotating member 61 and the slide plate. The elastic member 64 provides a tendency for the lower end of the rotating member 61 to rotate closer to the first slide plate 31. The elastic member 64 is preferably a torsion spring, which is sleeved on the rotating shaft 65, with its two ends abutting against the slide plate and the rotating member 61 respectively, and provides a force for the lower end of the rotating member 61 to rotate towards the first slide plate 31.

[0066] The rotating component 61 is designed to ensure that when it rotates, the first driving body 45 moves within the second driving body 46, the traction rope 42 moves, and the rotating component 61 rotates, but the relative position between the two sliding plates remains unchanged. Simultaneously, the rotating component 61 is also designed to match the sliding stroke of the slider 55. When the slider 55 slides on the fixed plate 51, the rotating component 61 rotates, and at this time, the relative position between the two sliding plates remains fixed. When the door closes, due to the elastic force of the torsion spring, when the limiting pin 62 is at the left end of the limiting groove 63, the traction rope 42 can drive the second sliding plate 32 to move to the left. After the first sliding plate 31 and the second sliding plate 32 contact, the traction rope 42 continues to move, overcoming the elastic force of the torsion spring, causing the rotating component 61 to rotate. The limiting pin 62 moves from the left end to the right end of the limiting groove 63. This process matches the slider 55 moving from the left end to the right end of the fixed plate 51, ensuring safety when the door is closed.

[0067] The following is a brief description of the working process of the gantry crane 1 in this embodiment:

[0068] like Figure 1 , 8 As shown in Figure 10, the door operator 1 is in the open state at this time, and the two sliding plates are far apart. The first sliding plate 31 is at the left end of the base plate 2, and the second sliding plate 32 is at the right end of the base plate 2. Under the action of the spring elastic element, the slider 55 is at the leftmost end of the fixed plate 51. Under the action of the torsion spring, the limiting pin 62 of the rotating part 61 is located at the leftmost end of the limiting groove 63, and the first driving body 45 is located at the leftmost end of the channel 464 in the tube body 462.

[0069] Next, by energizing the solenoid of the second drive body 46, the first drive body 45 moves from left to right within the tube 462, driving the traction rope 42 to move. Since the slider 55 is fixed to the traction rope 42 by the fixing pin 56, and the rotating part 61 is also fixedly connected to the traction rope 42, the door knife mechanism 5 and the first slide plate 31 are driven to move to the right as a whole, and the rotating part 61 and the second slide plate 32 are driven to move to the left as a whole. Figure 2As shown, this is the transition state. At the same time, due to the elastic force of the elastic element between the slider 55 and the fixed plate 51, and the elastic force of the torsion spring between the rotating member 61 and the second slide plate 32, and because the force of the traction rope 42 on the slider 55 and the force on the rotating member 61 are less than the corresponding elastic force, the slider 55 is still located at the left end of the fixed plate 51 and the limiting pin 62 of the rotating member 61 is located at the left end of the limiting groove 63 during this process.

[0070] Next, the solenoid of the second drive body 46 is energized, causing the first drive body 45 to move from left to right within the tube 462, thus moving the traction rope 42. At this time, since the first slide plate 31 and the second slide plate 32 are close to each other, the corresponding door panels of the two slide plates are in contact with each other. The traction rope 42 continues to move, and its force on the slider 55 is greater than the elastic force of the spring element, thereby causing the slider 55 to move from left to right on the fixed plate 51. At the same time, the force of the traction rope 42 on the rotating part 61 is greater than the elastic force of the torsion spring, thereby causing the rotating part 61 to rotate. The limiting pin 62 on the rotating part 61 moves from the left end of the limiting groove 63 to the right end, as shown in the figure. Figure 3 , 9 As shown in Figure 11. At this point, the door is fully closed, indicating it is in the closed position.

[0071] Next, when the door needs to be opened, the solenoid of the second drive body 46 is energized, but the current direction is opposite, causing the first drive body 45 to move from right to left within the tube 462. Under the action of the spring elastic element 64 and the torsion spring, the slider 55 first moves from the right end of the fixed plate 51 to the left, the rotating element 61 rotates, and then the first sliding plate 31 and the second sliding plate 32 move, causing the door panel to open, becoming as shown. Figure 1 The structure shown.

[0072] In the above structure, a spring elastic element is provided between the slider 55 and the fixed plate 51. In some preferred embodiments, the spring elastic element can be replaced by a locking mechanism 7, such as... Figure 13-14 As shown. The locking mechanism 7 includes a locking pin 71 mounted on the slider 55, a locking rod 72 rotatably mounted on the fixed plate 51, and an unlocking plate 73 fixedly mounted on the base plate 2.

[0073] In such Figure 1 In the open position shown, slider 55 moves to the left end of fixed plate 51, locking pin 71 drops and locks slider 55, as shown. Figure 13 As shown. At this time, there is no relative movement between the slider 55 and the fixed plate 51. The slider 55, the door knife mechanism 5, and the first slide plate 31 can move as a whole when the traction rope 42 drives it to move to the position shown. Figure 2In the indicated state, the locking lever 72 contacts the unlocking plate 73 on the base plate 2, and the locking lever 72 is lifted. At this time, driven by the traction rope 42, the slider 55 moves from the left end to the right end of the fixed plate 51. This process is the transition state of the door operator 1. When the slider 55 moves to the right end of the fixed plate 51, the door operator 1 is in the state shown. Figure 3 The door is shown in the closed state.

[0074] In this application, the first driving body is fixed to the steel wire rope, and the second driving body is fixed to the base plate. The movement of the first driving body drives the steel wire rope to directly drive the door knife. The overall operation is better and more stable, and the on-site installation will not affect the accuracy. The spatial layout is more reasonable. If the power component is fixed to the slide plate, since the first slide plate needs to fix the door knife device, it is difficult to add a power component, or the size of the door plate and door machine must be increased to fix the power component to the slide plate. Similarly, if the permanent magnet device is fixed to the second slide plate, not only is it impossible to set a rotating part of the rotating structure, but it is also impossible to move synchronously with the door knife slider or swing arm. It is also necessary to avoid interference with the traction rope, which also requires increasing the height of the door machine base plate, which cannot solve the technical problem to be solved by this application. Moreover, the structure of the permanent magnet fixed by the slide plate is complicated, the installation process is complicated, and the later maintenance is inconvenient.

[0075] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A gantry crane, characterized in that, The device includes a base plate, a first sliding plate and a second sliding plate slidably disposed on the base plate, and a drive mechanism for driving the first and second sliding plates to slide on the base plate. The drive mechanism includes a power component, a traction rope, a first rolling element and a second rolling element. The first and second rolling elements are respectively rotatably disposed at both ends of the base plate. The traction rope is sleeved on the two rolling elements. The first and second sliding plates are fixed to the traction rope. The power component is used to drive the traction rope to move, thereby causing the first and second sliding plates to move closer to or further apart from each other. The power assembly includes a first drive body disposed on the traction rope and a second drive body disposed on the base plate. The traction rope passes through the second drive body. The second drive body is used to drive the first drive body to move within the second drive body, thereby driving the traction rope to move. The second drive body is sleeved on the outside of the first drive body and the traction rope. The first driving body is a magnet, and the second driving body is a solenoid; the solenoid includes a tube body; or, the first driving body includes a power source, a magnet, and a conductor, with the conductor respectively disposed on the positive and negative terminals of the power source; the second driving body includes a coil, the conductor electrically connecting the power source and part of the coil, and the axial length of the coil being greater than the length between the conductors on the positive and negative terminals of the power source. A door knife mechanism is provided on the first or second sliding plate. The door knife mechanism includes a fixed plate, a rotating rod rotatably mounted on the fixed plate, and a first knife arm and a second knife arm respectively mounted at both ends of the rotating rod. A slider is slidably mounted on the upper end of the fixed plate. The slider is fixed to the traction rope, which drives the slider to reciprocate between the first and second knife arms. A rotating component is rotatably mounted on the first or second sliding plate. The rotating component is provided with a limit pin, and a limit groove is provided on the sliding plate to cooperate with the limit pin. An elastic element is provided between the rotating component and the sliding plate, which provides a tendency for the lower end of the rotating component to rotate towards the other sliding plate. The door operator has a closed state, a transition state, and an open state; in the closed state, the first and second sliding plates are close to each other; in the open state, the first and second sliding plates are far apart; in the transition state, the relative positions of the first and second sliding plates remain fixed, the slider moves on the fixed plate, and the rotating component rotates; the drive mechanism is used to drive the door operator to be in different states or to switch between different states.

2. A door operator according to claim 1, characterized in that, The solenoid includes a loop coil and / or one or more wound coils formed by winding wires, and the extension direction of the traction rope is the same as the axial direction of the loop coil or the wound coil.

3. A door operator according to claim 1, characterized in that, The solenoid includes a wound coil, and a receiving groove is provided on the tube wall. The wound coil is disposed in the receiving groove. Multiple wound coils are disposed along the length direction of the tube, and the length direction of the wound coils is perpendicular to the length direction of the tube.

4. A door operator according to claim 3, characterized in that, The tube is divided into multiple sections along its length, and the cross-sections of the coils in each section may be the same or different.

5. A door operator according to claim 3 or 4, characterized in that, The tube body comprises two opposing parts, with coils on the two parts located on different cross sections of the tube body.

6. A door operator according to claim 1, characterized in that, The magnet and conductor are integrated into one unit.

7. A door operator according to claim 1, characterized in that, The door knife mechanism is provided on one of the first or second sliding plates, and the rotating member is provided on the remaining one of the first or second sliding plates.

8. A door operator according to claim 1, characterized in that, The horizontal plane height of the first and second rolling elements is higher than the horizontal plane height of the first or second sliding plate; the slider is fixed to the upper part of the traction rope, and the rotating element is fixed to the lower part of the traction rope.

9. An elevator, characterized in that, Including the gantry crane as described in any one of claims 1-8.

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