A gantry crane hook device suitable for limited space in tunnels

Abstract

The present invention discloses a gantry crane hook device suitable for use in confined tunnel spaces. The hook device comprises a telescopic assembly, including a fixed column and a fixed half-ring; a swing assembly, disposed on the side of the telescopic assembly, comprising a first rod, a second rod, and a third rod; and an opening and closing assembly, disposed at the bottom of the telescopic assembly, comprising a sleeve and a rotating half-ring. The present invention, through the cooperation of the telescopic assembly, the swing assembly, and the opening and closing assembly, can automatically lock when lifting equipment and automatically unlock when placing the equipment, thereby optimizing the operation steps, reducing operation time, and improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of gantry cranes, in particular to a gantry crane hook device suitable for use in a limited space in a tunnel. Background Art

[0002] Gantry cranes, also known as portal cranes, are primarily used for loading and unloading operations in indoor or outdoor cargo yards, material yards, and bulk cargo. Gantry cranes feature high site utilization, a large operating range, wide adaptability, and strong versatility, making them widely used in port cargo yards. When excavating a tunnel, which sometimes passes through a giant cave, an arch bridge must be built to span the cave. The irregular surrounding rock beneath the line must be trimmed and the foundation constructed, requiring vertical transportation of crushed stone. Conventional hooks require additional personnel to hook and unhook the equipment. Caves are dark and prone to oxygen deprivation, so a hook that opens and closes automatically is needed to reduce the number of steps, optimize operational logic, and avoid excessive crowding inside the cave. Summary of the Invention

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0004] In view of the above and / or existing problems in the existing hook device applicable to gantry cranes, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is how to enable the hook to automatically lock and unlock the suspended device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a gantry crane hook device suitable for the limited space of a tunnel, which includes a telescopic component, a swing component and an opening and closing component.

[0007] This is a preferred solution of the gantry crane hook device suitable for use in a limited tunnel space as described in the present invention, wherein: the telescopic assembly comprises a fixed column and a fixed half ring, wherein the fixed half ring is arranged at the bottom of the fixed column;

[0008] a swing assembly, arranged on the side of the telescopic assembly, comprising a No. 1 rod, a No. 2 rod, and a No. 3 rod, wherein the No. 1 rod is arranged on one side of the fixed column, the No. 2 rod is arranged on one side of the No. 1 rod, and the No. 3 rod is arranged on one side of the No. 2 rod; and

[0009] The opening and closing component is arranged at the bottom of the telescopic component and includes a sleeve and a rotating half ring. The sleeve is sleeved on the outside of the fixed half ring, and the rotating half ring is rotatably connected to the bottom of the fixed half ring.

[0010] As a preferred solution of the gantry crane hook device suitable for limited space in a tunnel as described in the present invention, the fixed column includes a No. 1 convex top, a fixed column body and a No. 1 convex column, the No. 1 convex top is arranged at the top of the fixed column body, and the No. 1 convex column is arranged on both sides of the bottom of the fixed column.

[0011] As a preferred solution of the gantry crane hook device suitable for limited space in a tunnel as described in the present invention, a long groove, a short groove and an oblique groove are provided in the middle of the fixed column, there are two long grooves and two short grooves respectively, the long groove and the short groove are evenly arranged around the middle of the fixed column, the top of the short groove is flush with the top of the long groove, there are four oblique grooves, the top of the oblique groove is connected to the top of the long groove, and the bottom of the oblique groove is connected to the bottom of the short groove slightly above.

[0012] As a preferred solution of the gantry crane hook device suitable for limited space in a tunnel as described in the present invention, the telescopic assembly further comprises a lifting cylinder, which is sleeved on the outside of the fixed column, and the lifting cylinder comprises a No. 2 convex top, a lifting cylinder body, a No. 2 convex column and a No. 1 convex bottom, the No. 2 convex top is arranged at the top of the lifting cylinder body, the No. 2 convex column is arranged on both sides of the bottom of the lifting cylinder body, and the No. 1 convex bottom is arranged at the bottom of the lifting cylinder body.

[0013] As a preferred solution of the gantry crane hook device suitable for limited space in tunnels described in the present invention, the lifting cylinder is provided with a slotted hole and a square hole, the slotted hole passes through the middle of the lifting cylinder body, the No. 1 protrusion cooperates with the slotted hole, the square hole passes through the middle of the lifting cylinder body, the slotted hole and the square hole are perpendicular to each other, and the fixed half ring cooperates with the square hole.

[0014] As a preferred solution of the gantry crane hook device suitable for limited space in tunnels according to the present invention, the lifting cylinder further includes a limiting ball and a limiting ring groove, the limiting ring groove is arranged on the top of the inner wall of the lifting cylinder, there are two limiting balls, the limiting balls and the long groove cooperate with each other.

[0015] As a preferred solution of the gantry crane hook device suitable for limited space in a tunnel as described in the present invention, the telescopic assembly also includes a spring, the spring is sleeved on the outside of the fixed column, the top of the spring cooperates with the bottom of the No. 1 convex top, and the bottom of the spring cooperates with the top of the No. 2 convex top.

[0016] As a preferred solution of the gantry crane hook device suitable for limited space in a tunnel as described in the present invention, wherein: a long hole, a short hole and a No. 3 boss are provided on the No. 2 rod, one end of the No. 1 rod is rotatably engaged with the No. 1 boss, and the other end of the No. 1 rod is rotatably engaged with the No. 3 boss, the long hole is arranged on one side of the top of the No. 2 rod, the short hole is arranged on the other side of the top of the No. 2 rod, and one end of the No. 2 rod is rotatably engaged with the No. 2 boss.

[0017] As a preferred solution of the gantry crane hook device suitable for limited space in tunnels described in the present invention, the third rod includes a thin column, a thick column and a connecting rod, the thin column is arranged on the side of one end of the connecting rod, the thick column is arranged on the other side of the other end of the connecting rod, the thin column cooperates with the short hole, and the connecting rod cooperates with the long hole.

[0018] As a preferred solution of the gantry crane hook device suitable for limited space in a tunnel described in the present invention, a circular hole is provided on the sleeve, the thick column cooperates with the circular hole, and the top of the rotating semi-ring and the bottom of the fixed semi-ring are rotatably connected.

[0019] The beneficial effects of the present invention are: with the cooperation of the telescopic component, the swing component and the opening and closing component, the present invention can automatically lock when the equipment is lifted, and can automatically unlock when the equipment is placed, thereby optimizing the operating steps, reducing the operating time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0021] Figure 1 This is the overall structural diagram of the gantry crane hook device suitable for limited space in tunnels.

[0022] Figure 2 This is the overall structural diagram of another state of the gantry crane hook device suitable for limited space in tunnels.

[0023] Figure 3 This is a partial structural diagram of the telescopic components of the gantry crane hook device suitable for limited space in tunnels.

[0024] Figure 4 This is another structural diagram of the telescopic component of the gantry crane hook device suitable for limited space in tunnels.

[0025] Figure 5This is a structural diagram of the swing assembly of a gantry crane hook device suitable for use in confined spaces in tunnels. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0029] Example 1

[0030] Reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a gantry crane hook device suitable for a limited space in a tunnel. The gantry crane hook device suitable for a limited space in a tunnel includes a telescopic component 100, a swing component 200 and an opening and closing component 300.

[0031] Specifically, the telescopic assembly 100 includes a fixed column 101 and a fixed half ring 102 . The fixed half ring 102 is disposed at the bottom of the fixed column 101 .

[0032] The telescopic assembly 100 contracts and extends when preparing to lift a device or when lowering a device, automatically locking or unlocking the device to be lifted.

[0033] Specifically, the swing assembly 200 is arranged on the side of the telescopic assembly 100, and includes a rod 201, a rod 202 and a rod 203. The rod 201 is arranged on one side of the fixed column 101, the rod 202 is arranged on one side of the rod 201, and the rod 203 is arranged on one side of the rod 202.

[0034] The swing assembly 200 transmits the movement of the telescopic assembly 100 to the opening and closing assembly 300, completing the locking and unlocking of the device.

[0035] Specifically, the opening and closing assembly 300 is arranged at the bottom of the telescopic assembly 100, and includes a sleeve 301 and a rotating half ring 302. The sleeve 301 is sleeved on the outside of the fixed half ring 102, and the rotating half ring 302 is rotatably connected to the bottom of the fixed half ring 102.

[0036] Driven by the swing assembly 200 and the telescopic assembly 100, the opening and closing assembly 300 rotates and locks the rotating half ring 302 when lifting the equipment. It is used to lift the equipment. When the equipment is placed, the rotating half ring 302 is no longer locked. When the hook device is lifted, the equipment being lifted causes the rotating half ring 302 to rotate in the opposite direction, automatically unlocking the lifted equipment.

[0037] When in use, the hook device is placed on the equipment to be hoisted. When the equipment is ready to be hoisted, the telescopic component 100 will contract, and the rotating half ring 302 of the opening and closing component 300 will rotate through the swing component 200, automatically locking the hoisted equipment. When the hoisted equipment is placed, the hook device is lifted, and the hoisted equipment causes the rotating half ring 302 to rotate in the opposite direction, automatically unlocking the hoisted equipment.

[0038] Example 2

[0039] Reference Figures 1 to 5 , which is the second embodiment of the present invention, and is based on the previous embodiment.

[0040] Specifically, the fixing column 101 includes a No. 1 convex top 101a, a fixing column body 101b and a No. 1 convex column 101c. The No. 1 convex top 101a is arranged on the top of the fixing column body 101b, and the No. 1 convex column 101c is arranged on both sides of the bottom of the fixing column 101.

[0041] The top of the fixed column 101 cooperates with the cable of the gantry crane.

[0042] Specifically, a long slot K1, a short slot K2 and an oblique slot K3 are provided in the middle of the fixed column 101. There are two long slots K1 and two short slots K2 respectively. The long slot K1 and the short slot K2 are evenly arranged around the middle of the fixed column 101b. The top of the short slot K2 is flush with the top of the long slot K1. There are four oblique slots K3. The upper left corner of each oblique slot K3 is connected to the top of the long slot K1 or the short slot K2, and the lower right corner is connected to the lower position of the top of the adjacent slot.

[0043] There are protrusions on the top of the long slot K1, the top of the short slot K2 and the bottom of the inclined slot K3, so that objects moving along the slot can only move in one direction, first from the bottom to the top of the long slot K1, then from the top to the bottom of the inclined slot K3, then from the bottom to the top of the short slot K2, and then from the top to the bottom of the inclined slot K3.

[0044] Specifically, the telescopic assembly 100 also includes a lifting cylinder 103, which is sleeved on the outside of the fixed column 101. The lifting cylinder 103 includes a No. 2 convex top 103a, a lifting cylinder body 103b, a No. 2 convex column 103c and a No. 1 convex bottom 103d. The No. 2 convex top 103a is arranged at the top of the lifting cylinder body 103b, the No. 2 convex column 103c is arranged on both sides of the bottom of the lifting cylinder body 103b, and the No. 1 convex bottom 103d is arranged at the bottom of the lifting cylinder body 103b.

[0045] The lifting cylinder 103 can move up and down along the outside of the fixing column 101 .

[0046] Specifically, the lifting cylinder 103 is provided with a slotted hole H1 and a square hole H2. The slotted hole H1 passes through the middle of the lifting cylinder body 103b. The No. 1 boss 101c cooperates with the slotted hole H1. The square hole H2 passes through the middle of the lifting cylinder body 103b. The slotted hole H1 and the square hole H2 are perpendicular to each other. The fixed half ring 102 cooperates with the square hole H2.

[0047] With the cooperation of the slotted hole H1 and the square hole H2 , the lifting cylinder 103 can move up and down along the outside of the fixing column 101 , but cannot rotate.

[0048] Specifically, the lifting cylinder 103 further includes a limiting ball 103e and a limiting ring groove K4. The limiting ring groove K4 is provided on the top of the inner wall of the lifting cylinder 103. There are two limiting balls 103e, which cooperate with the long groove K1.

[0049] The ball 103e can move back and forth within the long slot K1, short slot K2, and oblique slot K3. A gap is left between the ball 103e and the retaining ring slot K4, allowing the ball 103e to pass over the protrusions within the long slot K1, short slot K2, and oblique slot K3. The retaining ring slot K4 ensures that the ball 103e moves up and down with the lifting cylinder 103.

[0050] Specifically, the telescopic assembly 100 further includes a spring 104, which is sleeved on the outside of the fixed column 101b, the top of the spring 104 cooperates with the bottom of the first convex top 101a, and the bottom of the spring 104 cooperates with the top of the second convex top 103a.

[0051] The spring 104 accumulates elastic force when the lifting cylinder 103 ascends.

[0052] When in use, the hook device is placed on the equipment to be hoisted. When the equipment is ready to be hoisted, the control device is used to lower the hook device, and the No. 1 convex bottom 103d contacts the hook of the hoisted equipment, and the lifting cylinder 103 rises. The spring 104 accumulates elastic force when the lifting cylinder 103 rises, and the limiting ball 103e rises as the lifting cylinder 103 rises, and rises from the bottom of the long groove K1 to the top, and falls into the bottom of the inclined groove K3, and then falls into the bottom of the short groove K2. The rise of the lifting cylinder 103 will drive the sleeve 301 to move through the swing assembly 200, and slowly sleeve the fixed half ring 102 and then into the rotating half ring 302, so that the rotating half ring 30 2 rotates, thus hooking the hook on the top of the suspended equipment. The hook device is lifted, and the limiting ball 103e is at the bottom of the short slot K2. The sleeve 301 continues to cover the fixed half ring 102 and the rotating half ring 302. The suspended equipment is moved. When the suspended equipment is placed, the hook device is lifted and pressed down again, allowing the limiting ball 103e to rise from the bottom of the short slot K2 and enter the inclined slot K3 and then into the long slot K1. The spring 104 releases its elastic force, and the sleeve 301 continues to cover the fixed half ring 102, but no longer covers the rotating half ring 302. When it is lifted again, the suspended equipment causes the rotating half ring 302 to rotate in the opposite direction, automatically unlocking the suspended equipment.

[0053] Example 3

[0054] Reference Figures 1 to 5 , which is the third embodiment of the present invention, and is based on the first two embodiments.

[0055] Specifically, a long hole H3, a short hole H4 and a No. 3 boss 202a are provided on the No. 2 rod 202, one end of the No. 1 rod 201 is rotatably engaged with the No. 1 boss 101c, and the other end of the No. 1 rod 201 is rotatably engaged with the No. 3 boss 202a, the long hole H3 is set on one side of the bottom of the No. 2 rod 202, the short hole H4 runs through the two side surfaces of the No. 2 rod 202, the long hole H3 and the short hole H4 are connected to each other, and one end of the No. 2 rod 202 is rotatably engaged with the No. 2 boss 103c.

[0056] When the lifting cylinder 103 ascends, the first rod 201 rotates counterclockwise, and the second rod 202 rotates clockwise.

[0057] Specifically, the third rod 203 includes a thin column 203a, a thick column 203b and a connecting rod 203c. The thin column 203a is arranged on the side of one end of the connecting rod 203c, and the thick column 203b is arranged on the other side of the other end of the connecting rod 203c. The thin column 203a cooperates with the short hole H4, and the connecting rod 203c cooperates with the long hole H3.

[0058] When the lifting cylinder 103 ascends, the thin column 203a of the third rod 203 moves in the short hole H4.

[0059] Specifically, a circular hole H5 is provided on the sleeve 301 , and the thick column 203 b cooperates with the circular hole H5 , so that the top of the rotating half ring 302 and the bottom of the fixed half ring 102 are rotatably connected.

[0060] When the lifting cylinder 103 rises, the thick column 203b of the No. 3 rod 203 rotates in the circular hole H5, and the displacement of the lifting cylinder 103 is transmitted to the sleeve 301 through the No. 1 rod 201, the No. 2 rod 202 and the No. 3 rod 203. When the lifting cylinder 103 rises, the sleeve 301 moves along the fixed half ring 102 toward the rotating half ring 302, and during the movement, the rotating half ring 302 rotates, allowing the rotating half ring 302 and the fixed half ring 102 to form a larger arc, thereby locking the hook on the top of the suspended equipment.

[0061] When in use, the hook device is placed on the equipment to be hoisted. When the equipment is ready to be hoisted, the control device is used to lower the hook device, and the No. 1 convex bottom 103d contacts the hook of the hoisted equipment. The lifting cylinder 103 rises, and the spring 104 accumulates elastic force when the lifting cylinder 103 rises. The limiting ball 103e rises as the lifting cylinder 103 rises, and rises from the bottom of the long slot K1 to the top, and falls into the bottom of the inclined slot K3, and then falls into the bottom of the short slot K2. The thick column 203b of the No. 3 rod 203 rotates in the circular hole H5, and the displacement of the lifting cylinder 103 is transmitted to the sleeve 301 through the No. 1 rod 201, the No. 2 rod 202 and the No. 3 rod 203. When the lifting cylinder 103 rises, the sleeve 301 moves along the fixed half ring 102 to the rotating half ring 302. During the movement, the rotating half ring 302 is rotated so that the rotating half ring 302 and the fixed half ring 102 form a larger arc, thereby locking the hook on the top of the suspended equipment. The hook device is lifted, and the limiting ball 103e is at the bottom of the short slot K2. The sleeve 301 continues to cover the fixed half ring 102 and the rotating half ring 302. The suspended equipment is moved. When the suspended equipment is placed, the hook device is lifted and pressed down again to allow the limiting ball 103e to rise from the bottom of the short slot K2 and enter the inclined slot K3 and then into the long slot K1. The spring 104 releases the elastic force, and the sleeve 301 continues to cover the fixed half ring 102, but no longer covers the rotating half ring 302. When lifted again, the suspended equipment causes the rotating half ring 302 to rotate in the opposite direction, automatically unlocking the suspended equipment.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A gantry crane hook device suitable for use in limited tunnel spaces, characterized by: include, A telescopic assembly (100) comprises a fixed column (101) and a fixed half ring (102), wherein the fixed half ring (102) is arranged at the bottom of the fixed column (101); a swing assembly (200), arranged on the side of the telescopic assembly (100), comprising a first rod (201), a second rod (202) and a third rod (203), wherein the first rod (201) is arranged on one side of the fixed column (101), the second rod (202) is arranged on one side of the first rod (201), and the third rod (203) is arranged on one side of the second rod (202); and An opening and closing assembly (300) is arranged at the bottom of the telescopic assembly (100), comprising a sleeve (301) and a rotating half ring (302), wherein the sleeve (301) is sleeved on the outside of the fixed half ring (102), and the rotating half ring (302) is rotatably connected to the bottom of the fixed half ring (102); The fixing column (101) comprises a fixing column body (101b) and a No. 1 convex column (101c), wherein the No. 1 convex column (101c) is arranged on both sides of the bottom of the fixing column (101); The middle of the fixed column (101) is provided with a long groove (K1), a short groove (K2) and an oblique groove (K3), the long groove (K1) and the short groove (K2) are respectively provided with two, the long groove (K1) and the short groove (K2) are evenly arranged around the middle of the fixed column (101b), the top of the short groove (K2) is flush with the top of the long groove (K1), the oblique groove (K3) is provided with four, the top of the oblique groove (K3) is connected to the top of the long groove (K1) or the top of the short groove (K2), and the bottom of the oblique groove (K3) is connected to the bottom of the short groove (K2) slightly above or adjacent to the long groove (K1); The telescopic assembly (100) further comprises a lifting cylinder (103), wherein the lifting cylinder (103) is sleeved on the outside of the fixed column (101); The lifting cylinder (103) comprises a lifting cylinder body (103b) and a second convex column (103c), wherein the second convex column (103c) is arranged on both sides of the bottom of the lifting cylinder body (103b); The lifting cylinder (103) is provided with a slotted hole (H1) and a square hole (H2), the slotted hole (H1) passes through the middle of the lifting cylinder body (103b), the No. 1 boss (101c) cooperates with the slotted hole (H1), the square hole (H2) passes through the middle of the lifting cylinder body (103b), the slotted hole (H1) and the square hole (H2) are perpendicular to each other, and the fixed half ring (102) cooperates with the square hole (H2); The lifting cylinder (103) further comprises a limiting ball (103e) and a limiting ring groove (K4), wherein the limiting ring groove (K4) is arranged at the top of the inner wall of the lifting cylinder (103), and there are two limiting balls (103e), and the limiting balls (103e) cooperate with the long groove (K1); The second rod (202) is provided with a long hole (H3), a short hole (H4) and a third boss (202a); one end of the first rod (201) is rotatably engaged with the first boss (101c); the other end of the first rod (201) is rotatably engaged with the third boss (202a); the long hole (H3) is provided on one side of the bottom of the second rod (202); the short hole (H4) passes through two side surfaces of the second rod (202); the long hole (H3) and the short hole (H4) are interconnected; and one end of the second rod (202) is rotatably engaged with the second boss (103c); The third rod (203) comprises a thin column (203a), a thick column (203b) and a connecting rod (203c), wherein the thin column (203a) is arranged on the side of one end of the connecting rod (203c), and the thick column (203b) is arranged on the other side of the other end of the connecting rod (203c), the thin column (203a) cooperates with the short hole (H4), and the connecting rod (203c) cooperates with the long hole (H3).

2. The hook device of a gantry crane suitable for use in a limited space in a tunnel as claimed in claim 1, characterized in that: The fixing column (101) further comprises a No. 1 convex top (101a), and the No. 1 convex top (101a) is arranged on the top of the fixing column body (101b).

3. The hook device of a gantry crane suitable for use in a limited space in a tunnel according to claim 2, characterized in that: The lifting cylinder (103) further comprises a second convex top (103a) and a first convex bottom (103d), wherein the second convex top (103a) is arranged at the top of the lifting cylinder body (103b), and the first convex bottom (103d) is arranged at the bottom of the lifting cylinder body (103b).

4. The hook device of a gantry crane suitable for use in a limited space in a tunnel as claimed in claim 3, characterized in that: The telescopic assembly (100) further comprises a spring (104), wherein the spring (104) is sleeved on the outside of the fixed column (101b), the top of the spring (104) is matched with the bottom of the first convex top (101a), and the bottom of the spring (104) is matched with the top of the second convex top (103a).

5. The hook device of a gantry crane suitable for use in a limited space in a tunnel according to claim 1, characterized in that: The sleeve (301) is provided with a circular hole (H5), and the thick column (203b) cooperates with the circular hole (H5).

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