Wind-resistant portal crane

Abstract

The invention provides a wind-resistant portal crane which comprises a portal crane body, a ground rail is arranged at the lower end of the portal crane body, an edge groove parallel to the ground rail is formed in one side of the ground rail, a concrete layer is arranged in the edge groove, a plurality of prefabricated plates are arranged on the upper end face of the concrete layer, and the prefabricated plates are arranged at intervals in the length direction of the edge groove. A locking rod mechanism is arranged on each prefabricated plate and comprises one or more holding and clamping assemblies, an anchoring mechanism is further arranged on one side of a supporting leg of the portal crane body and comprises a liftable anchoring rod, the anchoring rod descends to be inserted into the holding and clamping assemblies, the holding and clamping assemblies hold the anchoring rod tightly, and the anchoring rod is fixed to the portal crane body. The problem that the outdoor portal crane cannot be quickly and stably fixed in windy weather is solved.

Description

Technical Field

[0001] The present invention relates to the field of wind protection for cranes, in particular to a wind-resistant gantry crane. Background Art

[0002] Gantry cranes are generally stabilized on the ground walking track by their own weight. When used outdoors, gantry cranes may be blown or even overturned in windy weather due to their large windward surface and high center of gravity.

[0003] Traditional gantry cranes generally adopt anchoring or center-of-gravity lowering solutions for wind resistance. The center-of-gravity lowering solution generally installs a lifting mechanism on the crane frame. When strong winds come, the lifting mechanism lowers, lowering the overall center of gravity of the gantry crane. This solution is feasible in theory, but due to the large weight of the crane and the load, the lifting mechanism needs to meet the requirements of huge structural strength. In addition, the large mass mechanism has high inertia, which places a heavy burden on the drive mechanism during lifting and lowering operations. Therefore, slow acceleration and deceleration are required. This solution is not very effective in sudden and violent storms.

[0004] Another solution is to rely on self-provided windproof iron wedges for fixation. This solution also requires the installation of guy ropes on both sides of the door legs for anchoring. During the operation, there are disadvantages such as high labor intensity for workers, long installation time, and slow emergency response to sudden extreme weather. Summary of the Invention

[0005] The present invention provides a wind-resistant gantry crane, which solves the problem of rapid and stable fixation of an open-air gantry crane in windy weather.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a wind-resistant gantry crane, including a gantry crane body, a ground rail is provided at the lower end of the gantry crane body, a side groove parallel to the ground rail is provided on one side of the ground rail, a concrete layer is provided in the side groove, and a plurality of prefabricated panels are provided on the upper end surface of the concrete layer, and the prefabricated panels are arranged at intervals along the length direction of the side groove, and each prefabricated panel is provided with a locking rod mechanism, and the locking rod mechanism includes one or more clamping assemblies. An anchoring mechanism is also provided on one side of the support leg of the gantry crane body, and the anchoring mechanism includes a liftable anchor rod, and the anchor rod is lowered to be inserted into the clamping assembly, and the clamping assembly clamps the anchor rod.

[0007] In the preferred solution, the clamping assembly includes a positioning seat sleeve, the positioning seat sleeve includes a socket, the side wall of the socket is provided with multiple sliding grooves, the sliding grooves are provided with locking tongues, and the lower end of the anchor rod is provided with an annular groove, the locking tongue slides along the sliding groove and is clamped into the annular groove to fix the anchor rod.

[0008] In the preferred solution, an outer conical surface is provided at the lower end of the anchor rod, and a slope surface is provided on the inner side of the positioning seat sleeve. The outer conical surface squeezes the slope surface to make the lock tongue slide outward, and stop parts are also provided at both ends of the lock tongue. Blind grooves are provided at both ends of the slide groove, and a spring is provided in each blind groove. A baffle is provided at one end of the blind groove opening, and the two ends of the spring respectively abut against the stop part and the baffle. The blind groove pushes the lock tongue to slide inward to insert into the annular groove, and a stop conical surface is provided at the lower end of the positioning seat sleeve, and the stop conical surface is used to abut against the outer conical surface.

[0009] In the preferred solution, a lifting sleeve with a threaded connection is provided on the outer side of the positioning seat sleeve, a pressure ring is provided on the upper end of the lifting sleeve, and a reverse bevel is provided on the outer side of the lock tongue. The lifting sleeve rotates to make the pressure ring squeeze the reverse bevel, and the reverse bevel slides out of the annular groove.

[0010] In the preferred solution, a driving shaft is further provided in the middle of the bottom connecting seat, a driving gear is provided at the upper end of the driving shaft, a plurality of locking rod mechanisms are provided on the outside of the driving shaft, a plurality of anchoring rods are provided at the lower end of the anchoring mechanism, each anchoring rod is aligned with the socket of each locking rod mechanism, a plurality of lifting seats are provided on the bottom connecting seat, each lifting seat is connected to the lower end of each positioning seat sleeve, an outer gear ring is provided on the outer side of the lifting sleeve, and each outer gear ring is engaged with the driving gear.

[0011] In a preferred embodiment, a plurality of end stops are provided along the circumferential direction of the inner wall of the lifting sleeve, and hollow grooves are provided between adjacent end stops. The lifting sleeve rotates to move the end stops to the end of the slide groove close to the outer wall of the positioning seat sleeve.

[0012] In the preferred solution, the anchoring mechanism includes a base, which is connected to the legs of the gantry crane body. A rotatable rotating sleeve is provided in the base, and a spiral screw is provided in the rotating sleeve. A bottom connecting plate is provided at the lower end of the spiral screw, and the bottom connecting plate is also provided with a guide rod. The guide rod is slidably connected to the base, and the anchor rod is provided at the lower end of the bottom connecting plate.

[0013] In the preferred solution, a stepped countersunk hole is provided in the base seat, a threaded annular stopper is provided in the stepped countersunk hole, a large diameter end is provided at the lower end of the rotating sleeve, a limiting section is provided in the stepped countersunk hole, the large diameter end is provided in the limiting section, and the annular stopper stops the lower end of the large diameter end.

[0014] In a preferred solution, a lower plug-in motor is further provided on the base seat, and a gear transmission mechanism is provided between the shaft end of the lower plug-in motor and the rotating sleeve, and the lower plug-in motor drives the rotating sleeve to rotate through the gear transmission mechanism.

[0015] In a preferred solution, a distance sensor is provided on the support leg of the gantry crane body, a detection target is provided at one end of the ground rail, and the distance sensor faces the detection target.

[0016] The beneficial effects of the present invention are as follows: an insertable anchor rod is installed on the gantry crane leg, and a plurality of locking rod mechanisms are pre-installed next to the ground walking track. The gantry crane intelligently moves to the nearest locking rod mechanism according to the wind speed and wind direction. The anchor rod is inserted into the locking rod mechanism to fix the crane legs, thereby preventing the crane from being blown by strong winds and causing damage to the walking motor or even causing overturning. A multi-point positioning structure is adopted, and a spring-loaded lock tongue is used to automatically lock the anchor rod without the need for coordination of other drive structures, thereby reducing the risk of mechanism interference. The release of each lock tongue is coordinated and controlled by a lifting sleeve that is spirally sleeved with the positioning seat sleeve. A single motor can synchronously control the unlocking of the lock tongue, and the motor can be reversed to coordinate the lock tongue limiting, thereby reducing the control difficulty and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] Figure 1 This is a top-down layout diagram of a gantry crane.

[0019] Figure 2 It is a side view of a gantry crane.

[0020] Figure 3 This is the schematic diagram of the crane position detection principle.

[0021] Figure 4 This is an enlarged view of the support leg anchoring mechanism.

[0022] Figure 5 It is a schematic diagram of the docking between the anchoring mechanism and the locking rod mechanism.

[0023] Figure 6 This is an exploded view of the clamp assembly.

[0024] Figure 7 It is a schematic diagram of the lifting and rotating sleeve in the middle position.

[0025] Figure 8 It is a schematic diagram of the upper position of the lifting and rotating sleeve.

[0026] Figure 9 This is a schematic diagram of the lower position of the lifting and rotating sleeve.

[0027] Figure 10 This is the structural diagram of the positioning seat cover.

[0028] Figure 11 It is a diagram of the lock tongue structure.

[0029] In the figure: gantry crane body 1; ground rail 101; walking wheel mechanism 102; main beam 103; outrigger 104; mobile crane 105; winch 106; hook assembly 107; anchor mechanism 2; base 201; rotating sleeve 202; screw rod 203; bottom connecting plate 204; guide rod 205; stepped countersunk hole 206; annular block 207; large diameter end 208; limiting section 209; lower plug motor 210; gear transmission mechanism 211; locking rod mechanism 3; bottom connecting seat 301; driving gear 302; outer gear ring 303; lifting seat 304; driving shaft 305; unlocking motor 306; side groove 4; precast panel 401; concrete layer 402; clamping assembly 5; anchor rod 6; annular groove 601; outer cone 602; positioning seat sleeve 7; locking tongue 701; slide groove portion 702; insertion hole 703; slope surface 704; stop portion 705; blind groove 706; spring 707; baffle 708; stop cone 709; reverse slope 710; lifting sleeve 8; end stop portion 801; hollow cut portion 802; pressure ring 9; lifting connecting rod 10; distance sensor 11; detection target 12; anemometer 13; wind vane 14; control cabinet 15. DETAILED DESCRIPTION

[0030] like Figure 1-11 In the invention, a wind-resistant gantry crane is provided, comprising a gantry crane body 1, a ground rail 101 being provided at the lower end of the gantry crane body 1, a side groove 4 being provided on one side of the ground rail 101 and being parallel to the ground rail 101, a concrete layer 402 being provided in the side groove 4, a plurality of prefabricated panels 401 being provided on the upper end surface of the concrete layer 402, the prefabricated panels 401 being arranged at intervals along the length direction of the side groove 4, a locking rod mechanism 3 being provided on each prefabricated panel 401, the locking rod mechanism 3 including one or more clamping assemblies 5, an anchoring mechanism 2 being further provided on one side of the support leg 104 of the gantry crane body 1, the anchoring mechanism 2 including a liftable anchoring rod 6, the anchoring rod 6 being lowered to be inserted into the clamping assembly 5, and the clamping assembly 5 clamping the anchoring rod 6.

[0031] The gantry crane body 1 includes a gantry, which includes a main beam 103 and supporting legs 104 at both ends. A mobile overhead crane 105 is provided on the main beam 103, and a winch 106 and a hook assembly 107 are provided on the mobile overhead crane 105.

[0032] An electrically driven walking wheel mechanism 102 is provided at the lower end of the support leg 104 of the gantry crane body 1, which can be driven to move forward along the ground rail 101.

[0033] An anemometer 13, a wind vane 14, and a control cabinet 15 can be installed on or near the gantry crane body 1. When strong winds strike, the gantry crane body 1 moves to the nearest locking rod mechanism 3, lowers the anchor rod 6, and inserts it into the clamping assembly 5. The clamping assembly 5 clamps the anchor rod 6 tightly, securing each leg 104 of the gantry crane body 1. To reduce the running resistance of the gantry crane body 1, the gantry crane body 1 should move in the direction of the wind as much as possible. If there is a crosswind, the gantry crane body 1 should move in the direction closest to the locking rod mechanism 3.

[0034] In the preferred embodiment, the clamping assembly 5 includes a positioning seat sleeve 7, the positioning seat sleeve 7 includes a socket 703, the side wall of the socket 703 is provided with multiple sliding grooves 702, the sliding grooves 702 are provided with locking tongues 701, and the lower end of the anchor rod 6 is provided with an annular groove 601, the locking tongue 701 slides along the sliding groove 702 and is clamped into the annular groove 601 to fix the anchor rod 6.

[0035] In the preferred solution, an outer conical surface 602 is provided at the lower end of the anchor rod 6, and a sloped surface 704 is provided on the inner side of the positioning sleeve 7. The outer conical surface 602 squeezes the sloped surface 704 to make the lock tongue 701 slide outward. Stop portions 705 are also provided at both ends of the lock tongue 701. Blind grooves 706 are provided at both ends of the slide groove portion 702. A spring 707 is provided in each blind groove 706. A baffle 708 is provided at one end of the opening of the blind groove 706. The two ends of the spring 707 respectively abut against the stop portion 705 and the baffle 708. The blind groove 706 pushes the lock tongue 701 to slide inward to insert into the annular groove 601. A stop conical surface 709 is provided at the lower end of the inner portion of the positioning sleeve 7. The stop conical surface 709 is used to abut against the outer conical surface 602.

[0036] The central axis of the socket 703 is located on the inner side of the positioning seat cover 7, away from the socket 703. The central axis is the outer side.

[0037] Initially, the locking tongue 701 is at its innermost position due to the retaining force of the blind groove 706, and the stopper 705 abuts the blind end of the blind groove 706. When the anchor rod 6 is inserted into the insertion hole 703, the outer conical surface 602 at the front end of the annular groove 601 squeezes the sloped surface 704 of the locking tongue 701, causing the locking tongues 701 arranged along the circumference of the insertion hole 703 to move outward, expanding the passage until the anchor rod 6 can pass through. The anchor rod 6 continues to be inserted until the outer conical surface 602 abuts the stopper conical surface 709. At this time, the locking tongue 701 is inserted into the annular groove 601 under the retaining force of the blind groove 706. The contact surfaces of the locking tongue 701 and the annular groove 601 are both flat surfaces, so the anchor rod 6 cannot be dislodged in the opposite direction, and the gantry crane body 1 is immediately fixed.

[0038] In the preferred solution, a lifting sleeve 8 with a threaded connection is provided on the outer side of the positioning seat sleeve 7, a pressure ring 9 is provided on the upper end of the lifting sleeve 8, and a reverse bevel 710 is provided on the outer side of the lock tongue 701. The lifting sleeve 8 rotates to make the pressure ring 9 squeeze the reverse bevel 710, and the reverse bevel 710 slides out of the annular groove 601.

[0039] The pressure ring 9 is the unlocking mechanism and is mounted on the upper end surface of the side wall of the lifting sleeve 8 via a lifting connecting rod 10 at the lower end. The lifting connecting rod 10 is a screw, and the height of the pressure ring 9 can be adjusted by a nut. When the lifting sleeve 8 rotates, the pressure ring 9 simultaneously presses down the reverse bevel 710 of each locking tongue 701, causing the circumferential reverse bevel 710 to be pulled outward synchronously, unlocking the anchor rod 6.

[0040] In the preferred solution, a driving shaft 305 is further provided in the middle of the bottom connecting seat 301, a driving gear 302 is provided at the upper end of the driving shaft 305, a plurality of locking rod mechanisms 3 are provided on the outside of the driving shaft 305, a plurality of anchoring rods 6 are provided at the lower end of the anchoring mechanism 2, and each anchoring rod 6 is aligned with the socket 703 of each locking rod mechanism 3, a plurality of lifting seats 304 are provided on the bottom connecting seat 301, each lifting seat 304 is connected to the lower end of each positioning seat sleeve 7, an outer gear ring 303 is provided on the outer side of the lifting rotating sleeve 8, and each outer gear ring 303 is engaged with the driving gear 302.

[0041] An unlocking motor 306 is also provided on the bottom connecting seat 301. The shaft end of the unlocking motor 306 is connected to the driving shaft 305. The unlocking motor 306 is a reduction motor, which can drive multiple lifting sleeves 8 to rotate synchronously through the outer gear ring 303. Each lifting sleeve 8 rotates and descends, so that the pressure ring 9 gradually contacts the reverse slope 710 of each lock tongue 701, thereby synchronously unlocking each anchor rod 6.

[0042] In the preferred embodiment, a plurality of end stops 801 are provided along the circumferential direction on the inner wall of the lifting sleeve 8, and hollow groove portions 802 are provided between adjacent end stops 801. The lifting sleeve 8 is rotated to move the end stops 801 to the end of the slide groove portion 702 close to the outer wall of the positioning seat sleeve 7.

[0043] At the beginning, the height of the lifting sleeve 8 is in the middle position. When the unlocking motor 306 reverses, the lifting sleeve 8 rotates and rises, so that the end stop part 801 just rotates to the outer end of the slide groove part 702 to form a stop, so that the lock tongue 701 cannot move outward, preventing the risk of the lock tongue 701 escaping from the annular groove 601 due to failure of the spring 707.

[0044] When the lifting sleeve 8 is in the middle position and the low position, the end stop portion 801 will not block the end of the slide groove portion 702.

[0045] In the preferred embodiment, the anchoring mechanism 2 includes a base 201, which is connected to the support legs 104 of the gantry crane body 1. A rotatable rotating sleeve 202 is provided in the base 201, and a spiral screw 203 is provided in the rotating sleeve 202. The lower end of the spiral screw 203 is provided with a bottom connecting plate 204, and the bottom connecting plate 204 is also provided with a guide rod 205. The guide rod 205 is slidably connected to the base 201, and the anchor rod 6 is provided at the lower end of the bottom connecting plate 204.

[0046] In the preferred solution, a stepped countersunk hole 206 is provided in the base seat 201, a threaded annular stopper 207 is provided in the stepped countersunk hole 206, a large diameter end 208 is provided at the lower end of the rotating sleeve 202, the stepped countersunk hole 206 is provided with a limiting section 209, the large diameter end 208 is provided in the limiting section 209, and the annular stopper 207 stops the lower end of the large diameter end 208.

[0047] The upper end of the rotating sleeve 202 passes through the through hole of the base 201. The stepped countersunk hole 206 is threaded near the opening section and is equipped with an annular stopper 207. When the annular stopper 207 rotates to the innermost end, it cannot move further due to the smaller inner diameter of the limit section 209. Therefore, the annular stopper 207 does not clamp the large diameter end 208, allowing the large diameter end 208 to rotate.

[0048] In a preferred embodiment, a lower inserting motor 210 is further provided on the base 201 , and a gear transmission mechanism 211 is provided between the shaft end of the lower inserting motor 210 and the rotating sleeve 202 , and the lower inserting motor 210 drives the rotating sleeve 202 to rotate through the gear transmission mechanism 211 .

[0049] The shaft end of the lower motor 210 and the rotating sleeve 202 are both covered with external gears, and a transition external gear is connected and meshed in the middle.

[0050] In a preferred solution, a distance sensor 11 is provided on the support leg 104 of the gantry crane body 1 , a detection target 12 is provided at one end of the ground rail 101 , and the distance sensor 11 faces the detection target 12 .

[0051] The distance sensor 11 can be a laser displacement sensor. Since the locking rod mechanism 3 is fixedly installed on the prefabricated panel 401, the position is fixed and the distance to the detection target 12 is known. Therefore, the distance sensor 11 can be installed on the gantry crane body 1 and the real-time position of the gantry crane body 1 can be detected through the fixed detection target 12. When strong winds come, the position of the anchor rod 6 itself can be located, and the gantry crane body 1 can be guided to move above the locking rod mechanism 3.

[0052] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. In other words, equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A wind-resistant gantry crane, characterized by: The invention comprises a gantry crane body (1), wherein a ground rail (101) is provided at the lower end of the gantry crane body (1), a side groove (4) parallel to the ground rail (101) is provided on one side of the ground rail (101), a concrete layer (402) is provided in the side groove (4), a plurality of prefabricated panels (401) are provided on the upper end surface of the concrete layer (402), the prefabricated panels (401) are arranged at intervals along the length direction of the side groove (4), and a locking rod mechanism (3) is provided on each prefabricated panel (401), the locking rod mechanism (3) includes one or more clamping assemblies (5), and an anchoring mechanism (2) is further provided on one side of a support leg (104) of the gantry crane body (1), the anchoring mechanism (2) includes a liftable anchoring rod (6), the anchoring rod (6) is lowered to be inserted into the clamping assembly (5), and the clamping assembly (5) clamps the anchoring rod (6).

2. The wind-resistant gantry crane according to claim 1 is characterized in that: The clamping assembly (5) includes a positioning seat cover (7), the positioning seat cover (7) includes a socket (703), a side wall of the socket (703) is provided with a plurality of slide grooves (702), a locking tongue (701) is provided in the slide grooves (702), an annular clamping groove (601) is provided at the lower end of the anchor rod (6), and the locking tongue (701) slides along the slide grooves (702) and is clamped into the annular clamping groove (601) to fix the anchor rod (6).

3. The wind-resistant gantry crane according to claim 2 is characterized in that: The lower end of the anchor rod (6) is provided with an outer conical surface (602), and the inner side of the positioning seat sleeve (7) is provided with a slope surface (704). The outer conical surface (602) squeezes the slope surface (704) to make the lock tongue (701) slide outward. Stop portions (705) are also provided at both ends of the lock tongue (701). Blind grooves (706) are provided at both ends of the slide groove portion (702). A spring (707) is provided in each blind groove (706). A baffle (708) is provided at one end of the opening of the blind groove (706). The two ends of the spring (707) respectively abut against the stop portion (705) and the baffle (708). The blind groove (706) pushes the lock tongue (701) to slide inward to be inserted into the annular groove (601). A stop conical surface (709) is provided at the lower end of the positioning seat sleeve (7). The stop conical surface (709) is used to abut against the outer conical surface (602).

4. The wind-resistant gantry crane according to claim 3 is characterized in that: The outer side of the positioning seat sleeve (7) is covered with a lifting sleeve (8) connected by a thread, the upper end of the lifting sleeve (8) is provided with a pressure ring (9), and the outer side of the lock tongue (701) is provided with a reverse bevel (710). The lifting sleeve (8) rotates so that the pressure ring (9) squeezes the reverse bevel (710), and the reverse bevel (710) slides out of the annular groove (601).

5. The wind-resistant gantry crane according to claim 4 is characterized in that: A driving shaft (305) is further provided in the middle of the bottom connecting seat (301), a driving gear (302) is provided at the upper end of the driving shaft (305), a plurality of locking rod mechanisms (3) are provided on the outer side of the driving shaft (305), a plurality of anchoring rods (6) are provided at the lower end of the anchoring mechanism (2), each anchoring rod (6) is aligned with the socket (703) of each locking rod mechanism (3), a plurality of lifting seats (304) are provided on the bottom connecting seat (301), each lifting seat (304) is connected to the lower end of each positioning seat sleeve (7), an outer gear ring (303) is provided on the outer side of the lifting rotating sleeve (8), and each outer gear ring (303) is engaged with the driving gear (302).

6. The wind-resistant gantry crane according to claim 4 is characterized in that: The inner wall of the lifting rotating sleeve (8) is provided with a plurality of end stop portions (801) along the circumferential direction, and hollow cut groove portions (802) are provided between adjacent end stop portions (801). The lifting rotating sleeve (8) is rotated to move the end stop portions (801) to the end of the slide groove portion (702) close to the outer wall of the positioning seat sleeve (7).

7. The wind-resistant gantry crane according to claim 1 is characterized in that: The anchoring mechanism (2) includes a base (201), the base (201) is connected to the support leg (104) of the gantry crane body (1), a rotatable rotating sleeve (202) is provided in the base (201), a spiral screw (203) is sleeved in the rotating sleeve (202), a bottom connecting plate (204) is provided at the lower end of the spiral screw (203), the bottom connecting plate (204) is further provided with a guide rod (205), the guide rod (205) is slidably sleeved with the base (201), and an anchoring rod (6) is provided at the lower end of the bottom connecting plate (204).

8. The wind-resistant gantry crane according to claim 7 is characterized in that: A stepped countersunk hole (206) is provided in the base seat (201), a threaded annular stopper (207) is provided in the stepped countersunk hole (206), a large diameter end (208) is provided at the lower end of the rotating sleeve (202), the stepped countersunk hole (206) is provided with a limiting section (209), the large diameter end (208) is provided in the limiting section (209), and the annular stopper (207) stops the lower end of the large diameter end (208).

9. The wind-resistant gantry crane according to claim 7, characterized in that: A lower plug-in motor (210) is further provided on the base seat (201), and a gear transmission mechanism (211) is provided between the shaft end of the lower plug-in motor (210) and the rotating sleeve (202). The lower plug-in motor (210) drives the rotating sleeve (202) to rotate via the gear transmission mechanism (211).

10. The wind-resistant gantry crane according to claim 1, characterized in that: A distance sensor (11) is provided on the supporting leg (104) of the gantry crane body (1), a detection target (12) is provided at one end of the ground rail (101), and the distance sensor (11) faces the detection target (12).

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