Tracked lifting aerial work platform with hoisting system

Abstract

This invention discloses a tracked lifting aerial work platform with an attached hoisting system, belonging to the field of lifting work platform technology. It includes a base with triangular track wheels at its bottom for driving movement, a scissor lift at its top, and a lifting platform, guardrail, adjustment mechanism, and hoisting mechanism at its top. The invention utilizes an adjustment mechanism to move the guardrail upwards. The guardrail's displacement causes a movable rod to slide within a movable groove. When the guardrail reaches a suitable position, a locking block engages with a slot under the force of a first spring, thus positioning the guardrail's height. When adjusting the guardrail downwards, rotating a rotating block moves a downward pressure rod, which pushes the locking block out of the slot, allowing for downward adjustment of the guardrail's position and facilitating height adjustment.

Description

Technical Field

[0001] This invention relates to the field of lifting work platforms, specifically a tracked lifting aerial work platform with an attached hoisting system. Background Technology

[0002] Aerial work platforms are mobile aerial work platforms used in various industries for high-altitude operations, equipment installation, maintenance, and other tasks. The main types of aerial work platforms include: scissor lifts, trailer-mounted aerial work platforms, articulated boom lifts, telescopic boom lifts, aluminum alloy aerial work platforms, telescopic cylinder lifts, and spider lifts. Scissor lifts are widely used specialized aerial work equipment. Their scissor-type mechanical structure provides high stability after lifting, and their large working platform and high load-bearing capacity allow for a wider working range and are suitable for multiple people working simultaneously, making aerial work more efficient and safer.

[0003] When using aerial work platforms, guardrails are usually installed around the platform to protect users. However, the height of the guardrails is fixed and cannot accommodate users of different heights. In order to make it easier to adjust the height of the guardrails, a tracked lifting aerial work platform with a hoisting system is provided. Summary of the Invention

[0004] The purpose of this invention is to provide a tracked lifting aerial work platform with an attached hoisting system, so as to facilitate the adjustment of the height of the guardrail.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tracked lifting aerial work platform with an attached hoisting system, comprising a base, a triangular track wheel mounted at the bottom of the base for moving the base, a scissor lift mounted at the top of the base, a lifting platform mounted at the top of the scissor lift, the scissor lift for driving the lifting platform for lifting operations, a guardrail above the lifting platform, the height of the guardrail being adjustable by an adjustment mechanism, the lifting platform for hoisting objects via a hoisting mechanism, support seats fixedly connected to both sides of the top of the base at the top of the lifting platform for supporting the lifting platform, and a power outlet mounted at the top of the lifting platform.

[0006] The adjusting mechanism includes a first telescopic rod, which is fixedly connected to both sides of the top of the lifting platform. A protective plate is fixedly connected to the outer wall of the first telescopic rod. A guardrail is fixedly connected to the top of the first telescopic rod. A fixed base is fixedly connected to one end of the top of the lifting platform. A movable groove is formed at the top of the fixed base. A slot is formed on one side of the inner wall of the movable groove. A movable rod is fixedly connected to the bottom of the guardrail. The movable rod is slidably connected to the inner wall of the slot. A locking block extending from the movable rod is slidably connected inside the movable rod. A first spring is connected between the locking block and the movable rod. A pressing rod is slidably connected to the top of the locking block inside the movable rod. A rotating block is rotatably connected to the top of the guardrail. A first threaded rod is fixedly connected to the bottom of the rotating block. The first threaded rod extends into the interior of the pressing rod.

[0007] As a further embodiment of the present invention: the adjusting mechanism further includes a vertical groove, which is opened inside the movable rod and located on one side of the pressing rod. A fixing groove is opened on the inner wall of the vertical groove. A rotating shaft is rotatably connected inside the lifting platform. The top of the rotating shaft extends to the inner wall of the vertical groove. Fixing blocks are symmetrically fixedly connected to both sides of the rotating shaft. A spur gear is fixedly connected to the bottom end of the rotating shaft. A displacement block is slidably connected inside the lifting platform on one side of the spur gear. A second spring is connected between the displacement block and the lifting platform. A pressing block is slidably connected inside the lifting platform at one end of the displacement block. The bottom end of the pressing block extends out of the lifting platform.

[0008] As a further embodiment of the present invention: the hoisting mechanism includes a horizontal plate, which is slidably connected to the interior of the lifting platform and extends beyond one end of the lifting platform. A second telescopic rod is fixedly connected to the top of the horizontal plate, and an extension plate is fixedly connected to the outer wall of the second telescopic rod. The extension plate contacts the inner wall of the protective plate. An extension frame is fixedly connected to the top of the second telescopic rod, and the extension frame is slidably connected to the interior of the protective railing. A motor is installed on the outer wall of the lifting platform, and a second threaded rod is connected to the output end of the motor. The second threaded rod extends into the interior of the horizontal plate. A winch is installed at the bottom of the horizontal plate, and a mounting frame is fixedly connected to the bottom of the horizontal plate at one end of the winch. A roller is installed at the bottom of the horizontal plate at one end of the mounting frame. A traction rope is installed on the winch, and one end of the traction rope passes through the roller and is fixedly connected to the bottom of the mounting frame. A hook is installed at the bottom of the traction rope.

[0009] As a further embodiment of the present invention: the inner wall of the movable groove is in contact with the outer wall of the movable rod, the inner wall of the slot is in contact with the outer wall of one end of the locking block, and the locking block extends out of the movable rod and is provided with a first inclined surface.

[0010] As a further embodiment of the present invention: the top end of the pressure rod is provided with a first threaded hole, which matches the first threaded rod.

[0011] As a further embodiment of the present invention: the top of the card block is provided with a second inclined surface, and the bottom end of the pressing rod is in contact with the second inclined surface.

[0012] As a further embodiment of the present invention: the inner wall of the fixing groove is in contact with the outer wall of the fixing block.

[0013] As a further embodiment of the present invention: the outer wall of the displacement block is provided with a toothed groove, which meshes with the spur gear.

[0014] As a further embodiment of the present invention: one end of the displacement block is provided with a third inclined surface, the top end of the extrusion block is in contact with the third inclined surface, and the shape of the extrusion block is L-shaped.

[0015] As a further embodiment of the present invention: the outer wall of the horizontal plate is provided with a second threaded hole, which matches the second threaded rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By setting an adjustment mechanism, the guardrail is moved upwards. The displacement of the guardrail causes the movable rod to slide in the movable groove. When it moves to the appropriate position, the locking block is engaged in the locking groove by the elastic force of the first spring, thereby positioning the height of the guardrail. When the guardrail is adjusted downwards, the rotating block is rotated to move the lower pressure rod. The displacement of the lower pressure rod pushes the locking block out of the locking groove, thereby adjusting the position of the guardrail downwards, which facilitates the adjustment of the height of the guardrail.

[0018] 2. By setting up a hoisting mechanism, the motor drives the second threaded rod to rotate, and the rotation of the second threaded rod causes the horizontal plate to move, thus extending the length of the hoisting platform. The winch operates to wind up and unwind the traction rope, thereby lifting and lowering the object. At the same time, the object can be moved by moving the horizontal plate, which facilitates the adjustment of the length of the hoisting platform, making it convenient for operators to work at heights. It can also be used for hoisting objects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the lifting platform of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation of the fixing base of the present invention;

[0022] Figure 4 This is a cross-sectional view of the fixing base of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the rotating shaft of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the movable rod of the present invention;

[0025] Figure 7 This is a cross-sectional view of the movable rod of the present invention;

[0026] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle;

[0027] Figure 9 This is a schematic diagram of the structure of the horizontal plate of the present invention;

[0028] Figure 10 This is a schematic diagram of the installation of the horizontal plate of the present invention.

[0029] In the diagram: 1. Base; 2. Triangular track wheel; 3. Scissor lift; 4. Lifting platform; 5. Guardrail; 6. Adjustment mechanism; 601. First telescopic rod; 602. Guard plate; 603. Fixed seat; 604. Movable groove; 605. Slot; 606. Movable rod; 607. Locking block; 608. First spring; 609. Downward pressure rod; 610. First threaded rod; 611. Rotating block; 612. Vertical groove; 613. Fixed groove; 61 4. Fixed block; 615. Rotating shaft; 616. Spur gear; 617. Displacement block; 618. Second spring; 619. Pressing block; 7. Lifting mechanism; 701. Horizontal plate; 702. Extension plate; 703. Second telescopic rod; 704. Extension frame; 705. Motor; 706. Second threaded rod; 707. Winch; 708. Mounting frame; 709. Roller; 710. Traction rope; 711. Hook; 8. Power plug; 9. Support base. Detailed Implementation

[0030] 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 are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The following describes embodiments of the invention based on its overall structure.

[0032] Please see Figures 1 to 10 In this embodiment of the invention, the tracked lifting aerial work platform with a hoisting system includes a base 1. A triangular track wheel 2 is installed at the bottom of the base 1 to drive its movement. A scissor lift 3 is installed at the top of the base 1, and a lifting platform 4 is installed at the top of the scissor lift 3. The scissor lift 3 drives the lifting platform 4 to perform lifting operations. A guardrail 5 is installed above the lifting platform 4, and the height of the guardrail 5 is adjusted by an adjustment mechanism 6. The lifting platform 4 performs hoisting operations on objects via a hoisting mechanism 7. Support seats 9 are fixedly connected to both sides of the top of the base 1 on both sides of the lifting platform 4, and the support seats 9 support the lifting platform 4. A power outlet 8 is installed at the top of the lifting platform 4.

[0033] In this embodiment: the guardrail 5 is used to protect the operator on the lifting platform 4, the scissor lift 3 is used to control the lifting of the lifting platform 4, when the lifting platform 4 descends to the top of the support base 9, the support base 9 is used to support the lifting platform 4, the triangular track wheel 2 is used to drive the base 1 to move, and the power plug 8 allows the operator to connect and use high-power electric tools to carry out high-altitude operations.

[0034] Please refer to this carefully. Figures 1 to 8The adjusting mechanism 6 includes a first telescopic rod 601, which is fixedly connected to both sides of the top of the lifting platform 4. A protective plate 602 is fixedly connected to the outer wall of the first telescopic rod 601. A guardrail 5 is fixedly connected to the top of the first telescopic rod 601. A fixed base 603 is fixedly connected to one end of the top of the lifting platform 4. A movable groove 604 is opened at the top of the fixed base 603. A slot 605 is opened on one side of the inner wall of the movable groove 604. A movable rod 606 is fixedly connected to the bottom of the guardrail 5. The movable rod 606 is slidably connected to the inner wall of the slot 605. A locking block 607 extending from the movable rod 606 is slidably connected inside the movable rod 606. A first spring 608 is connected between the locking block 607 and the movable rod 606. A pressing rod 609 is slidably connected to the top of the locking block 607 inside the movable rod 606. A rotating block 611 is rotatably connected to the top of the guardrail 5. The bottom end of 611 is fixedly connected to a first threaded rod 610, which extends into the interior of the lower pressure rod 609. The adjustment mechanism 6 also includes a vertical groove 612, which is opened inside the movable rod 606 and located on one side of the lower pressure rod 609. A fixing groove 613 is opened on the inner wall of the vertical groove 612. A rotating shaft 615 is rotatably connected inside the lifting platform 4. The top of the rotating shaft 615 extends into the inner wall of the vertical groove 612. Fixing blocks 614 are symmetrically fixedly connected to both sides of the rotating shaft 615. A spur gear 616 is fixedly connected to the bottom end of the rotating shaft 615. A displacement block 617 is slidably connected to the inside of the lifting platform 4 on one side of the spur gear 616. A second spring 618 is connected between the displacement block 617 and the lifting platform 4. A pressing block 619 is slidably connected to one end of the displacement block 617 inside the lifting platform 4. The bottom end of the pressing block 619 extends out of the lifting platform 4.

[0035] In this embodiment: when the operator moves to the top of the lifting platform 4 and adjusts the height of the guardrail 5, the guardrail 5 is pushed upward to move. The displacement of the guardrail 5 causes the movable rod 606 to slide in the movable groove 604. When it moves to the appropriate position, the locking block 607 is engaged in the locking groove 605 by the elastic force of the first spring 608, positioning the movable rod 606, thereby positioning the height of the guardrail 5. When adjusting the guardrail 5 downward, the rotating block 611 is rotated. The rotation of the rotating block 611 causes the first threaded rod 610 to rotate. The rotation of the first threaded rod 610 causes the lowering rod 609 to move. The displacement of the lowering rod 609 pushes the locking block 607 out of the locking groove 605, thereby allowing the position of the guardrail 5 to be adjusted downward.

[0036] When the lifting platform 4 is at the top of the support base 9, the support base 9 contacts the pressing block 619, and the support base 9 pushes the pressing block 619 into the lifting platform 4. The second spring 618 is in a compressed state, and the fixing block 614 is not in the fixing groove 613. Therefore, the fixing block 614 and the rotating shaft 615 can slide in the vertical groove 612, allowing the movable rod 606 to slide in the movable groove 604 to adjust the height of the guardrail 5. When the lifting platform 4 moves upward, the lifting platform 4 separates from the support base 9, and the displacement block 617 is subjected to the elastic force of the second spring 618. The displacement block 617 pushes the bottom end of the pressing block 619 to extend out of the lifting platform 4. The displacement block 617 drives the spur gear 616 to rotate, which in turn drives the rotating shaft 615 to rotate. The rotating shaft 615 drives the fixing block 614 to rotate and enter the fixing groove 613, thus fixing the position of the movable rod 606 in the movable groove 604. This reinforces the position of the guardrail 5 and prevents it from loosening during high-altitude operations, which could affect the safety of the operation. It also facilitates the adjustment of the height of the guardrail 5.

[0037] Please refer to this carefully. Figures 9 to 10 The hoisting mechanism 7 includes a horizontal plate 701, which is slidably connected to the inside of the lifting platform 4 and extends out of one end of the lifting platform 4. A second telescopic rod 703 is fixedly connected to the top of the horizontal plate 701. An extension plate 702 is fixedly connected to the outer wall of the second telescopic rod 703 and contacts the inner wall of the protective plate 602. An extension frame 704 is fixedly connected to the top of the second telescopic rod 703 and is slidably connected to the inside of the guardrail 5. A motor 705 is installed on the outer wall of the lifting platform 4. The motor 705 outputs... The output end is connected to a second threaded rod 706, which extends into the interior of the horizontal plate 701. A winch 707 is installed at the bottom end of the horizontal plate 701. A mounting bracket 708 is fixedly connected to one end of the winch 707 at the bottom end of the horizontal plate 701. A roller 709 is installed at one end of the mounting bracket 708 at the bottom end of the horizontal plate 701. A traction rope 710 is installed on the winch 707. One end of the traction rope 710 passes through the roller 709 and is fixedly connected to the bottom end of the mounting bracket 708. A hook 711 is installed at the bottom end of the traction rope 710.

[0038] In this embodiment: when the length of the lifting platform 4 is extended, the motor 705 is started. The motor 705 drives the second threaded rod 706 to rotate. The rotation of the second threaded rod 706 causes the horizontal plate 701 to move. The horizontal plate 701 moves out of the lifting platform 4, thereby extending the length of the lifting platform 4. At this time, the extension frame 704 slides inside the guardrail 5, and the extension plate 702 slides inside the guardrail 602, performing synchronous extension operations on the guardrail 5 and the guardrail 602. When the height of the guardrail 5 is adjusted, the extension frame 704 can move synchronously with the movement of the guardrail 5.

[0039] When suspending an object, hook the object onto hook 711, start winch 707, winch 707 operates to wind and unwind traction rope 710, thereby driving the object to lift and lower. At the same time, the object can be moved by moving horizontal plate 701, which facilitates the adjustment of the length of lifting platform 4, making it convenient for operators to work at heights, and can also be used for hoisting objects.

[0040] Please refer to this carefully. Figures 4 to 8 The inner wall of the movable groove 604 is in contact with the outer wall of the movable rod 606, the inner wall of the slot 605 is in contact with the outer wall of one end of the locking block 607, and the locking block 607 extends out of the movable rod 606 and is provided with a first inclined surface.

[0041] In this embodiment: the displacement of the guardrail 5 causes the movable rod 606 to slide in the movable groove 604. When it moves to the appropriate position, the locking block 607 is engaged in the locking groove 605 by the elastic force of the first spring 608, thereby positioning the movable rod 606 and thus positioning the height of the guardrail 5.

[0042] Please refer to this carefully. Figures 4 to 8 The top end of the pressure rod 609 is provided with a first threaded hole, which matches the first threaded rod 610. The top end of the locking block 607 is provided with a second inclined surface, and the bottom end of the pressure rod 609 is in contact with the second inclined surface.

[0043] In this embodiment: rotating the rotating block 611 causes the first threaded rod 610 to rotate, and the first threaded rod 610 rotates, causing the lower pressure rod 609 to move. The displacement of the lower pressure rod 609 pushes the locking block 607 out of the locking groove 605, thereby allowing the position of the guardrail 5 to be adjusted downward.

[0044] Please refer to this carefully. Figures 4 to 8 The inner wall of the fixing groove 613 fits against the outer wall of the fixing block 614. The outer wall of the displacement block 617 is provided with a toothed groove, which meshes with the spur gear 616. One end of the displacement block 617 is provided with a third inclined surface. The top of the extrusion block 619 contacts the third inclined surface. The extrusion block 619 is L-shaped.

[0045] In this embodiment: when the lifting platform 4 moves upward, the lifting platform 4 separates from the support base 9, and the displacement block 617 is displaced by the elastic force of the second spring 618. The displacement of the displacement block 617 pushes the bottom end of the pressing block 619 to extend out of the lifting platform 4. The displacement of the displacement block 617 drives the spur gear 616 to rotate. The rotation of the spur gear 616 drives the rotating shaft 615 to rotate. The rotation of the rotating shaft 615 drives the fixing block 614 to rotate into the fixing groove 613, fixing the position of the movable rod 606 in the movable groove 604, thereby reinforcing the position of the guardrail 5.

[0046] Please refer to this carefully. Figures 9 to 10 The outer wall of the horizontal plate 701 is provided with a second threaded hole, which is matched with the second threaded rod 706.

[0047] In this embodiment: the motor 705 drives the second threaded rod 706 to rotate, and the rotation of the second threaded rod 706 drives the horizontal plate 701 to move.

[0048] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tracked aerial work platform with a hoisting system, comprising a base, wherein a triangular track wheel is mounted at the bottom of the base to drive the base to move, a scissor lift is mounted at the top of the base, and a lifting platform is mounted at the top of the scissor lift, the scissor lift being used to drive the lifting platform to perform lifting operations, characterized in that... The lifting platform is equipped with a guardrail above it, the height of which is adjusted by an adjustment mechanism. The lifting platform uses a hoisting mechanism to hoist objects. The top of the base is fixedly connected to support seats on both sides of the lifting platform. The support seats are used to support the lifting platform. A power plug is installed at the top of the lifting platform. The adjustment mechanism includes a first telescopic rod, which is fixedly connected to both sides of the top of the lifting platform. A protective plate is fixedly connected to the outer wall of the first telescopic rod. A guardrail is fixedly connected to the top of the first telescopic rod. A fixed seat is fixedly connected to one end of the top of the lifting platform. A movable groove is opened at the top of the fixed seat. A slot is opened on one side of the inner wall of the movable groove. A movable rod is fixedly connected to the bottom of the guardrail. The movable rod is slidably connected to the inner wall of the slot. A locking block extending out of the movable rod is slidably connected inside the movable rod. A first spring is connected between the locking block and the movable rod. A pressing rod is slidably connected to the top of the locking block inside the movable rod. A rotating block is rotatably connected to the top of the guardrail. A first threaded rod is fixedly connected to the bottom of the rotating block. The first threaded rod extends into the interior of the pressing rod. The adjusting mechanism also includes a vertical groove, which is opened inside the movable rod and located on one side of the pressing rod. A fixing groove is opened on the inner wall of the vertical groove. A rotating shaft is rotatably connected inside the lifting platform. The top of the rotating shaft extends to the inner wall of the vertical groove. Fixing blocks are symmetrically fixedly connected to both sides of the rotating shaft. A spur gear is fixedly connected to the bottom end of the rotating shaft. A displacement block is slidably connected inside the lifting platform on one side of the spur gear. A second spring is connected between the displacement block and the lifting platform. A pressing block is slidably connected inside the lifting platform at one end of the displacement block. The bottom end of the pressing block extends out of the lifting platform.

2. The tracked lifting aerial work platform with attached hoisting system according to claim 1, characterized in that, The hoisting mechanism includes a horizontal plate, which is slidably connected to the interior of the lifting platform and extends beyond one end of the lifting platform. A second telescopic rod is fixedly connected to the top of the horizontal plate, and an extension plate is fixedly connected to the outer wall of the second telescopic rod. The extension plate contacts the inner wall of the protective plate. An extension frame is fixedly connected to the top of the second telescopic rod and is slidably connected to the interior of the protective railing. A motor is installed on the outer wall of the lifting platform, and a second threaded rod is connected to the output end of the motor, extending into the interior of the horizontal plate. A winch is installed at the bottom of the horizontal plate, and a mounting frame is fixedly connected to the bottom of the horizontal plate at one end of the winch. A roller is installed at the bottom of the horizontal plate at one end of the mounting frame. A traction rope is installed on the winch, and one end of the traction rope passes through the roller and is fixedly connected to the bottom of the mounting frame. A hook is installed at the bottom of the traction rope.

3. The tracked lifting aerial work platform with attached hoisting system according to claim 1, characterized in that, The inner wall of the movable groove is in contact with the outer wall of the movable rod, the inner wall of the slot is in contact with the outer wall of one end of the locking block, and the end of the locking block extending out of the movable rod is provided with a first inclined surface.

4. The tracked lifting aerial work platform with attached hoisting system according to claim 1, characterized in that, The top end of the pressure rod is provided with a first threaded hole, which matches the first threaded rod.

5. The tracked lifting aerial work platform with attached hoisting system according to claim 1, characterized in that, The top of the card block is provided with a second inclined surface, and the bottom end of the pressing rod is in contact with the second inclined surface.

6. The tracked lifting aerial work platform with attached hoisting system according to claim 1, characterized in that, The inner wall of the fixing groove is in contact with the outer wall of the fixing block.

7. The tracked lifting aerial work platform with attached hoisting system according to claim 1, characterized in that, The outer wall of the displacement block is provided with toothed grooves, which mesh with the spur gear.

8. The tracked lifting aerial work platform with attached hoisting system according to claim 1, characterized in that, One end of the displacement block is provided with a third inclined surface, the top end of the extrusion block is in contact with the third inclined surface, and the extrusion block is L-shaped.

9. The tracked lifting aerial work platform with attached hoisting system according to claim 2, characterized in that, The outer wall of the horizontal plate is provided with a second threaded hole, which matches the second threaded rod.

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