Anti-overturning device for ladder car movement operation

Abstract

The utility model discloses a kind of ladder car mobile operation anti-overturning devices, including clamp, the clamp is equipped with pincer arm support stringers, and main pincer arm and auxiliary pincer arm respectively movably installed in the both sides of pincer arm support stringers, main pincer arm and auxiliary pincer arm are enclosed into arc mouth, the central line a of this arc mouth opening is downward, and the central line a is parallel with pincer arm support stringers central axis, arc mouth is in accord with I-shaped track;One pair of parallel clamping connecting arms is welded on the outside root of main pincer arm, the clamping connecting arm extends to the upper side of auxiliary pincer arm obliquely;Positioning pressure arm is welded on the outside root of auxiliary pincer arm, and the positioning pressure arm extends to the upper side of main pincer arm obliquely, locking buckle mounting seat is also welded on the outside of auxiliary pincer arm;Locking connecting rod combination is installed on clamping connecting arm, positioning pressure arm and locking buckle mounting seat. Advantageous effects: clamp is gripped I-shaped track by arc mouth, and is locked by locking connecting rod combination, avoid clamp to open, prevent clamp from separating from I-shaped track, prevent ladder car to overturn.

Description

Technical Field

[0001] This utility model relates to the field of ladder truck technology, and in particular to an anti-tipping device for ladder truck mobile operations. Background Technology

[0002] Ladder trucks are an essential and simple tool in construction, inspection, and maintenance operations in railways, power, and other industries. When working at heights, ladder trucks are used as mobile construction platforms for easy movement.

[0003] Because the I-shaped track surface is smooth and has a low coefficient of friction, the center of gravity of the ladder truck can easily shift when it moves on the I-shaped track or when people climb on it, causing it to tip over and resulting in falls and injuries. To reduce the risk of tipping over, ladder truck anti-tipping devices have been developed.

[0004] Existing ladder truck anti-tipping devices mostly involve setting up clamps that fit into the I-shaped track, and manually adjusting the locking components to increase the friction between the clamps and the I-shaped track, thereby increasing the stability of the ladder truck.

[0005] However, the locking components in existing ladder truck anti-tipping devices mostly rely on clamping the locking components against the clamps, resulting in limited clamping and poor anti-tipping capability of the ladder truck. Furthermore, existing ladder truck anti-tipping devices have poor adaptability; when encountering I-shaped track joints, bends, or uneven I-shaped tracks, they cannot flexibly conform to the I-shaped track, easily leading to derailment or jamming. Utility Model Content

[0006] The purpose of this invention is to provide a ladder truck mobile operation anti-tipping device that can adapt to the contour of the I-shaped track, always hold the I-shaped track tightly, and provide double locking protection to enhance the clamping ability.

[0007] A ladder truck mobile operation anti-tipping device includes a clamp, which is provided with a clamp arm mounting beam, and a main clamp arm and a secondary clamp arm respectively movably mounted on both sides of the clamp arm mounting beam. The main clamp arm and the secondary clamp arm form an arc-shaped jaw, the opening of which faces downward, and its center line a is parallel to the central axis of the clamp arm mounting beam. The arc-shaped jaw fits into the I-shaped track.

[0008] The key feature is that a pair of parallel clamping connecting arms are welded to the root of the outer side of the main clamp arm, and the clamping connecting arms extend obliquely to the top of the auxiliary clamp arm.

[0009] A positioning arm is welded to the root of the outer side of the auxiliary clamp arm. The positioning arm extends obliquely to the top of the main clamp arm. A locking ring mounting seat is also welded to the outer side of the auxiliary clamp arm.

[0010] The clamping connecting arm, positioning pressure arm, and locking buckle mounting base are equipped with locking linkages.

[0011] The clamps hold the I-shaped track with their arc-shaped jaws and are further locked by a locking linkage assembly, thereby preventing the clamps from opening and detaching from the I-shaped track, thus preventing the ladder truck from tipping over.

[0012] Furthermore, the locking linkage assembly consists of a positioning buckle, a locking buckle, a locking pressure arm, and a rotating shaft, wherein:

[0013] The main clamp arm of the locking arm has a pivot hole, and the central axis of the pivot hole is parallel to the center line a. The middle part of the locking arm has a positioning buckle hole, and the central axis of the positioning buckle hole is parallel to the center line a. The secondary clamp arm of the locking arm is an upwardly curved locking hook, which is close to the locking buckle.

[0014] The locking ring mounting base has a locking ring through hole, the central axis of which is parallel to the center line a. The locking ring passes through the locking ring through hole and is movably engaged with the locking hook.

[0015] The extended ends of a pair of clamping connecting arms are hinged to both ends of the rotating shaft, the middle of which passes through the rotating shaft through hole of the locking arm;

[0016] The positioning buckle is provided with a positioning connecting rod and a positioning locking rod that are parallel to each other. The middle part of the positioning connecting rod passes through the through hole of the positioning buckle, and the positioning locking rod is located above the main clamp arm.

[0017] The extension end of the positioning arm is a downwardly curved positioning hook, which is movably connected to the positioning locking rod.

[0018] In the above linkage structure, the positioning pressure arm and the locking pressure arm interlock by clamping the connecting arm, positioning buckle, locking buckle and rotating shaft, thereby providing double locking protection for the locking clamp and strengthening the clamp's locking ability.

[0019] Meanwhile, the linkage structure is simple. When locking the clamp, simply press the positioning arm against the positioning locking rod, so that the positioning locking rod is embedded in the positioning hook, and then fasten the locking ring onto the locking hook of the locking arm to complete the interlocking, so that the clamp grips the I-shaped rail. When disassembling the clamp, simply pull open the locking ring and then lift the positioning arm to easily complete the disassembly.

[0020] Therefore, this utility model is easy to operate, and a single person can install and disassemble it by hand without special tools, thereby greatly reducing maintenance costs.

[0021] Furthermore, a tension spring is provided between the main clamp arm and the auxiliary clamp arm, and the two ends of the tension spring are fixedly connected to the inner root of the main clamp arm and the auxiliary clamp arm, respectively.

[0022] The tension spring allows the clamps to be adjusted at bends or rail joints, maintaining a uniform clamping force and adapting to the profile of the I-beam track to always hold it firmly.

[0023] Furthermore, the main clamp arm has a two-bend structure, which is provided with a horizontal section, an outward extension section and an inward contraction section from top to bottom;

[0024] The horizontal section of the main clamp arm is the root of the main clamp arm;

[0025] The extended section of the main clamp arm is located on one side of the rail head of the I-shaped track;

[0026] The inner constriction section of the main clamp arm extends into the web of the I-shaped track and contacts the lower surface of the rail head of the I-shaped track.

[0027] Furthermore, the secondary clamp arm is a two-bend structure, which is provided with a horizontal section, an outward extension section, and an inward contraction section from top to bottom;

[0028] The horizontal section of the secondary clamp arm is the root of the secondary clamp arm;

[0029] The extended section of the secondary clamp arm is located on the other side of the rail head of the I-shaped track;

[0030] The inner constriction section of the auxiliary clamp arm extends into the web of the I-shaped track and contacts the lower surface of the rail head of the I-shaped track.

[0031] The main clamp arm and the auxiliary clamp arm are located on both sides of the I-shaped track. The extended section and the contracted section of the two clamp arms form an arc-shaped clamp that fits with the rail head and rail web of the I-shaped track, thereby fixing the ladder car on the I-shaped track and preventing the ladder car from overturning.

[0032] Furthermore, both the inner extension and contraction sections of the main clamp arm and the secondary clamp arm are provided with auxiliary roller mounting grooves, in which auxiliary rollers are installed and contact the lower surface of the rail head of the I-shaped track.

[0033] Furthermore, the clamp arm mounting beam is provided with main clamp arm mounting lugs and auxiliary clamp arm mounting lugs on both sides, wherein:

[0034] The main clamp arm mounting lug is hinged to the root of the main clamp arm;

[0035] The mounting lug of the secondary clamp arm is hinged to the root of the secondary clamp arm.

[0036] Furthermore, the clamp arm mounting beam is a channel steel with the opening facing downwards, and a traveling roller is installed in the groove of the channel steel. The traveling roller contacts the upper surface of the rail head of the I-shaped track.

[0037] The traveling rollers and auxiliary traveling rollers enable the ladder cart to move along the I-shaped track while the clamps are holding it, and also prevent the ladder cart from tipping over, thus facilitating actual operation.

[0038] Furthermore, it also includes a ladder truck connection mechanism, which is provided with a ladder truck connection arm, and the ladder truck connection arm is connected to the clamp arm mounting longitudinal beam;

[0039] The connecting arm of the ladder truck is equipped with an arc-shaped groove, and U-shaped locking holes are opened on both sides of the arc-shaped groove;

[0040] The arc-shaped groove is directly opposite the U-shaped lock, and the two ends of the U-shaped lock pass through the U-shaped lock through hole and are connected to the U-shaped lock nut.

[0041] Furthermore, the top of the clamp arm mounting beam is provided with a ladder truck connecting lug, which is hinged to the ladder truck connecting arm.

[0042] Beneficial effects: 1. The clamp in this utility model grips the I-shaped track with its arc-shaped jaws and is further locked by the linkage structure, thereby preventing the clamp from opening and detaching from the I-shaped track, thus preventing the ladder cart from tipping over. At the same time, the clamping connecting arm, positioning buckle, locking buckle, and rotating shaft in the linkage structure form an interlock, providing double locking protection for the clamp and thus strengthening the clamp's locking ability.

[0043] 2. The linkage structure is simple and easy to operate. When installing the clamp, simply press the positioning arm against the positioning locking rod, causing the locking rod to engage with the positioning hook. Then, fasten the locking ring onto the locking hook of the locking arm to interlock, allowing the clamp to grip the I-beam track. When disassembling the clamp, simply pull open the locking ring and lift the positioning arm to easily remove it. Therefore, a single person can install and disassemble the entire clamp by hand without special tools, reducing maintenance costs by 70%.

[0044] 3. The tension spring inside the clamp can deform with the shape of the I-shaped rail at the bend or rail joint, thereby adjusting the size of the arc-shaped jaws, so that the arc-shaped jaws maintain a uniform clamping force, adapt to the contour of the I-shaped rail, and always hold the I-shaped rail tightly.

[0045] 4. The traveling rollers and auxiliary traveling rollers enable the clamps to move along the I-shaped track, thus preventing the ladder cart from tipping over and facilitating actual operation. Attached Figure Description

[0046] Figure 1 This is an assembly diagram of the present invention;

[0047] Figure 2 for Figure 1 Enlarged schematic diagram of part a in the middle;

[0048] Figure 3 A three-dimensional schematic diagram of the clamping and holding mechanism (I)

[0049] Figure 4 A three-dimensional schematic diagram of the clamping and holding mechanism (II);

[0050] Figure 5 A three-dimensional schematic diagram of the clamping and gripping mechanism (III);

[0051] Figure 6 A front view of the clamping and holding mechanism. Detailed Implementation

[0052] The specific embodiments and working principle of this utility model will be further described in detail below with reference to the accompanying drawings.

[0053] like Figure 1 , 2 As shown, the ladder truck mobile operation anti-tipping device is equipped with a ladder truck connecting mechanism 3. The ladder truck connecting mechanism 3 is equipped with a clamping and holding mechanism. The clamping and holding mechanism adapts to the contour of the I-shaped track 5, fits well with the I-shaped track 5, and holds the I-shaped track 5 tightly.

[0054] like Figure 1 , 2 As shown, the ladder truck connecting mechanism 3 is provided with two ladder truck connecting arms 31. Each ladder truck connecting arm 31 is provided with an arc-shaped groove 311, and U-shaped locking holes are opened on both sides of the arc-shaped groove 311.

[0055] like Figure 1 , 2 As shown, the crossbar of the ladder truck base is installed in the arc-shaped groove 311, and the U-shaped lock 32 that is paired with the arc-shaped groove 311 is installed around the crossbar of the ladder truck base. The two ends of the U-shaped lock 32 pass through the U-shaped lock through hole and are connected to the U-shaped lock nut.

[0056] like Figure 2 As shown, the rail clamping mechanism is equipped with a clamp 1, and a rail clamping locking mechanism 2 is installed above the clamp 1.

[0057] like Figure 3 , 4 As shown in Figure 5, the clamp 1 is provided with a clamp arm mounting beam 11, and a main clamp arm 12a and a secondary clamp arm 12b movably mounted on both sides of the clamp arm mounting beam 11.

[0058] like Figure 3 , 4 As shown in Figures 5 and 6, both the main clamp arm 12a and the auxiliary clamp arm 12b are double-bending structures. The double-bending structure is provided with a horizontal section, an outer extension section and an inner contraction section from top to bottom.

[0059] The horizontal section of the main clamp arm 12a is the root of the main clamp arm 12a;

[0060] The horizontal section of the secondary clamp arm 12b is the root of the secondary clamp arm 12b;

[0061] The extended section of the main clamp arm 12a, the extended and contracted section of the main clamp arm 12a, the extended section of the auxiliary clamp arm 12b, and the extended and contracted section of the auxiliary clamp arm 12b form an arc-shaped jaw 14. The arc-shaped jaw 14 opens downward and matches the I-shaped track 5.

[0062] like Figure 1 , 2 As shown, the extended sections of the main clamp arm 12a and the auxiliary clamp arm 12b are located on both sides of the rail head of the I-shaped track 5; the extended contraction sections of the main clamp arm 12a and the auxiliary clamp arm 12b extend into the rail web of the I-shaped track 5, are located on both sides of the rail web of the I-shaped track 5, and are in contact with the lower surface of the rail head of the I-shaped track 5.

[0063] like Figure 3 As shown, a tension spring 13 is provided between the main clamp arm 12a and the auxiliary clamp arm 12b, and the two ends of the tension spring 13 are fixedly connected to the inner root of the main clamp arm 12a and the auxiliary clamp arm 12b, respectively.

[0064] The tension spring 13 can flexibly adjust the opening and closing degree of the two clamp arms 12 according to the width of the I-shaped track 5, maintaining a good fit with the I-shaped track 5, so that the ladder car has a certain buffering performance during movement. When encountering the joint, bend or unevenness of the I-shaped track 5, the tension spring 13 can absorb part of the impact force, preventing the ladder car from overturning due to excessive vibration, and greatly improving the adaptability and stability of the ladder car in the complex I-shaped track 5 environment.

[0065] like Figure 3 , 4 As shown in Figures 5 and 6, both the inner extension and contraction sections of the main clamp arm 12a and the inner extension and contraction sections of the auxiliary clamp arm 12b are provided with auxiliary roller mounting grooves. An auxiliary roller 121 is installed in the auxiliary roller mounting groove and contacts the lower surface of the rail head of the I-shaped track 5.

[0066] like Figure 3 , 4 As shown in Figures 5 and 6, the clamp arm mounting longitudinal beam 11 is a channel steel with its opening facing downwards. Main clamp arm mounting lugs 112a and auxiliary clamp arm mounting lugs 112b are respectively provided on both sides of this channel steel, wherein:

[0067] The main clamp arm mounting lug 112a is hinged to the root of the main clamp arm 12a;

[0068] The auxiliary clamp arm mounting lug 112b is hinged to the root of the auxiliary clamp arm 12b.

[0069] like Figure 2 , 3 As shown in Figures 4, 5, and 6, the top of the channel steel is also provided with a ladder car connecting lug 111 corresponding to the ladder car connecting arm 31, and each ladder car connecting lug 111 is hinged to the corresponding ladder car connecting arm 31.

[0070] like Figure 3 , 4 As shown in Figures 5 and 6, a traveling roller 113 is installed in the groove of the channel steel, and the traveling roller 113 contacts the upper surface of the rail head of the I-shaped track 5.

[0071] like Figure 3 , 4 As shown in Figures 5 and 6, the clamping and locking mechanism 2 is provided with a pair of parallel clamping connecting arms 26, a pair of parallel positioning pressure arms 22, a locking buckle mounting base 27, and a locking connecting rod assembly, wherein:

[0072] One end of the clamping connecting arm 26 is welded to the outer root of the main clamping arm 12a, and the other end of the clamping connecting arm 26 extends obliquely to the top of the auxiliary clamping arm 12b.

[0073] One end of the positioning arm 22 is welded to the outer root of the auxiliary clamp arm 12b, and the other end of the positioning arm 22 extends obliquely to the top of the main clamp arm 12a.

[0074] The locking ring mounting base 27 is welded to the outside of the secondary clamp arm 12b;

[0075] The locking linkage assembly is installed above the clamping connecting arm 26, the positioning pressure arm 22, and the locking buckle mounting base 27.

[0076] The locking linkage assembly consists of a positioning buckle 21, a locking buckle 23, a locking pressure arm 24, and a rotating shaft 25, wherein:

[0077] The main clamp arm end of the locking arm 24 has a rotating shaft through hole, and the central axis of the rotating shaft through hole is parallel to the center line a. The middle part of the rotating shaft 25 passes through the rotating shaft through hole of the locking arm 24, and the extension ends of a pair of clamping connecting arms 26 are hinged to the two ends of the rotating shaft 25.

[0078] The locking arm 24 has a positioning buckle through hole in the middle. The central axis of the positioning buckle through hole is parallel to the center line a. The positioning buckle 21 passes through the positioning buckle through hole.

[0079] The positioning buckle 21 is provided with a positioning connecting rod 211 and a positioning locking rod 212 that are parallel to each other. The middle part of the positioning connecting rod 211 passes through the through hole of the positioning buckle, and the positioning locking rod 212 is located above the main clamp arm 12a.

[0080] The extension end of the positioning arm 22 is a downwardly curved positioning hook 221, which is movably connected to the positioning locking rod 212.

[0081] The secondary clamp arm end of the locking arm 24 is an upwardly curved locking hook 241, which is close to the locking ring 23;

[0082] The locking ring mounting base 27 has a locking ring through hole, the central axis of which is parallel to the center line a. The locking ring 23 passes through the locking ring through hole and is movably engaged with the locking hook 241.

[0083] When the ladder truck moves to the designated position and needs to stop operation, the operator only needs to press the positioning arm 22 against the positioning locking rod 212, so that the positioning locking rod 212 is embedded in the positioning hook 221, and then fasten the locking ring 23 onto the locking hook 241 of the locking arm 24. This will interlock the clamping connecting arm 26, the positioning ring 21, the locking ring 23 and the rotating shaft 25, thereby clamping the clamp 1 onto the I-shaped track 5, preventing the clamp 1 from opening, preventing the clamp 1 from disengaging from the I-shaped track 5, further enhancing the stability of the ladder truck and preventing it from moving unexpectedly during operation.

[0084] Meanwhile, when disassembling clamp 1, it is only necessary to pull open the locking ring 23 and then lift the positioning pressure arm 22 to easily complete the disassembly. A single person can install and disassemble it by hand without special tools, which is convenient and greatly reduces maintenance costs.

Claims

1. A ladder truck mobile operation anti-tipping device, comprising a clamp (1), the clamp (1) having a clamp arm mounting beam (11), and a main clamp arm (12a) and a secondary clamp arm (12b) respectively movably mounted on both sides of the clamp arm mounting beam (11), the main clamp arm (12a) and the secondary clamp arm (12b) forming an arc-shaped clamp jaw (14), the arc-shaped clamp jaw (14) opening downwards, and its center line a parallel to the central axis of the clamp arm mounting beam (11); Its features are, A pair of parallel clamping connecting arms (26) are welded to the outer root of the main clamp arm (12a), and the clamping connecting arms (26) extend obliquely to the top of the auxiliary clamp arm (12b). A positioning arm (22) is welded to the root of the outer side of the secondary clamp arm (12b). The positioning arm (22) extends obliquely to the top of the main clamp arm (12a). A locking ring mounting seat (27) is also welded to the outer side of the secondary clamp arm (12b). Locking linkages are mounted on the clamping connecting arm (26), the positioning pressure arm (22), and the locking buckle mounting base (27).

2. The ladder truck mobile operation anti-tipping device according to claim 1, characterized in that, The locking linkage assembly consists of a positioning buckle (21), a locking buckle (23), a locking pressure arm (24), and a rotating shaft (25), wherein: The main clamp arm of the locking arm (24) has a pivot hole, and the central axis of the pivot hole is parallel to the center line a. The middle part of the locking arm (24) has a positioning buckle hole, and the central axis of the positioning buckle hole is parallel to the center line a. The secondary clamp arm of the locking arm (24) is an upwardly curved locking hook (241), which is close to the locking buckle (23). The locking ring mounting base (27) has a locking ring through hole, the central axis of which is parallel to the center line a. The locking ring (23) passes through the locking ring through hole and is movably connected to the locking hook (241). The extended ends of a pair of clamping connecting arms (26) are hinged to both ends of the rotating shaft (25), the middle of which passes through the rotating shaft through hole of the locking arm (24); The positioning buckle (21) is provided with a positioning connecting rod (211) and a positioning locking rod (212) that are parallel to each other. The middle part of the positioning connecting rod (211) passes through the through hole of the positioning buckle, and the positioning locking rod (212) is located above the main clamp arm (12a). The extension end of the positioning arm (22) is a downwardly curved positioning hook (221), which is movably connected to the positioning locking rod (212).

3. The ladder truck mobile operation anti-tipping device according to claim 1, characterized in that, A tension spring (13) is provided between the main clamp arm (12a) and the auxiliary clamp arm (12b), and the two ends of the tension spring (13) are fixedly connected to the inner root of the main clamp arm (12a) and the auxiliary clamp arm (12b), respectively.

4. The ladder truck mobile operation anti-tipping device according to claim 1, characterized in that, The main clamp arm (12a) is a two-bend structure, which is provided with a horizontal section, an outer extension section and an inner contraction section from top to bottom; The horizontal section of the main clamp arm (12a) is the root of the main clamp arm (12a); The extended section of the main clamp arm (12a) is located on one side of the rail head of the I-shaped track (5); The inner constriction section of the main clamp arm (12a) extends into the web of the I-shaped track (5) and contacts the lower surface of the rail head of the I-shaped track (5).

5. The ladder truck mobile operation anti-tipping device according to claim 1, characterized in that, The sub-clamp arm (12b) is a two-bend structure, which is provided with a horizontal section, an outer extension section and an inner contraction section from top to bottom; The horizontal section of the secondary clamp arm (12b) is the root of the secondary clamp arm (12b); The extended section of the secondary clamp arm (12b) is located on the other side of the rail head of the I-shaped track (5); The inner constriction section of the auxiliary clamp arm (12b) extends into the web of the I-shaped track (5) and contacts the lower surface of the rail head of the I-shaped track (5).

6. The ladder truck mobile operation anti-tipping device according to claim 5, characterized in that, The inner extension and contraction section of the main clamp arm (12a) and the inner extension and contraction section of the secondary clamp arm (12b) are both provided with auxiliary roller mounting grooves, and auxiliary rollers (121) are installed in the auxiliary roller mounting grooves.

7. The ladder truck mobile operation anti-tipping device according to claim 1, characterized in that, The clamp arm mounting longitudinal beam (11) is provided with a main clamp arm mounting lug (112a) and a secondary clamp arm mounting lug (112b) on both sides, wherein: The main clamp arm mounting lug (112a) is hinged to the root of the main clamp arm (12a); The mounting lug (112b) of the secondary clamp arm is hinged to the root of the secondary clamp arm (12b).

8. The ladder truck mobile operation anti-tipping device according to claim 1, characterized in that, The clamp arm mounting longitudinal beam (11) is a channel steel with the opening facing downwards, and a traveling roller (113) is installed in the slot of the channel steel.

9. The ladder truck mobile operation anti-tipping device according to claim 1, characterized in that, It also includes a ladder truck connection mechanism (3), which is provided with a ladder truck connection arm (31), which is connected to the clamp arm mounting longitudinal beam (11); The connecting arm (31) of the ladder truck is provided with an arc-shaped groove (311), and a U-shaped lock hole is opened on both sides of the arc-shaped groove (311); The arc-shaped groove (311) is directly opposite to the U-shaped lock (32), and the two ends of the U-shaped lock (32) pass through the U-shaped lock through hole and are connected to the U-shaped lock nut.

10. The ladder truck mobile operation anti-tipping device according to claim 9, characterized in that, The top of the clamp arm mounting beam (11) is provided with a ladder car connecting lug (111), which is hinged to the ladder car connecting arm (31).

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