Material hoisting trolley

Abstract

The utility model relates to a kind of material hoisting hanger.The utility model includes fixed cantilever and hanger cantilever;Slewing bearing is installed between hanger cantilever and fixed cantilever, to make hanger cantilever rotate relative to fixed cantilever around slewing bearing axis;Limiting piece is used to limit hanger cantilever relative to fixed cantilever rotation when hanger cantilever is in predetermined position;First rope guide pulley is installed in fixed cantilever;Second rope guide pulley and third rope guide pulley are respectively installed in the rear end and front end of hanger cantilever;Suspender is connected with lifting hook assembly after passing through first rope guide pulley, second rope guide pulley and third rope guide pulley;Upper limit stop device is installed in the front end of hanger cantilever, including upper limit switch and upper limit limit switch;Trigger plate is movably connected to the front end of hanger cantilever, including first trigger part and second trigger part.It has the advantages of compact structure, adjustable lifting point position, stable steel wire rope running path, reliable limit protection.

Description

TECHNICAL FIELD

[0001] The utility model relates to a window cleaning machine technical field especially is a kind of material hoisting crane. BACKGROUND

[0002] Hoisting crane is the key component in window cleaning machine, maintenance platform and building outer wall related equipment, mainly used for carrying sling, guide pulley and lifting hook, and realizes the lifting and position adjustment of material by cooperating with power system.In prior art, such crane usually adopts fixed structure, and the position of crane cantilever and the position of lifting point are relatively fixed, so it is difficult to flexibly adjust according to the change of operation area.

[0003] In addition, the existing hoisting crane usually uses single limit switch to control the upper limit position.Once the limit switch fails or is not triggered accurately, the lifting hook can continue to rise to the hard collision position, which may cause damage to the front end component of the crane, pulley jamming or even wire rope rupture, and there is a great safety hazard. SUMMARY

[0004] Therefore, the utility model provides a kind of material hoisting crane, with the advantages of compact structure, adjustable lifting point position, stable wire rope running path and reliable limit protection, to improve the applicability, safety and operation stability of equipment.

[0005] To solve the above technical problems, the utility model provides a kind of material hoisting crane, comprising: Fixed cantilever and crane cantilever; Slewing bearing, installed between the crane cantilever and the fixed cantilever, to make the crane cantilever rotate relative to the fixed cantilever around the slewing bearing axis; Limiting piece, for limiting the rotation of the crane cantilever relative to the fixed cantilever when the crane cantilever is at a predetermined position; First rope guide pulley, installed on the fixed cantilever; Second rope guide pulley and third rope guide pulley, respectively installed on the rear end and front end of the crane cantilever; Sling, connected with lifting hook assembly after passing through the first rope guide pulley, the second rope guide pulley and the third rope guide pulley; Upper limit device, installed on the front end of the crane cantilever, comprising upper limit switch and upper limit limit switch; Trigger plate, movably connected to the front end of the crane cantilever, comprising first trigger part and second trigger part; Wherein, the lifting hook assembly can lift the trigger plate when rising to the first position, so that the first trigger part contacts with the upper limit switch;When the lifting hook assembly continues to rise from the first position to the second position, the second trigger part can contact with the upper limit limit switch.

[0006] In one embodiment of the utility model, the outer ring of the slewing bearing is installed at the lower end of the fixed cantilever, and the inner ring of the slewing bearing is connected with the flange of the hanger cantilever.

[0007] In one embodiment of the utility model, the limiting piece is a locking pin installed at the side wall of the hanger cantilever, and the outer ring of the slewing bearing is provided with locking holes capable of being inserted with the locking pin.

[0008] In one embodiment of the utility model, the ascending limiting device further comprises a bracket installed at the front end of the hanger cantilever, and the upper limiting switch and the upper limit limiting switch are respectively located at the two outer side walls of the bracket along the width direction of the hanger cantilever.

[0009] In one embodiment of the utility model, the trigger plate comprises a support plate and first and second limiting baffle plates connected to the two sides of the support plate, the first limiting baffle plate comprises a first connecting plate perpendicular to the support plate and a second connecting plate obliquely connected to the first connecting plate, the second connecting plate is capable of being in contact with the upper limiting switch, the second limiting baffle plate extends outward along the direction parallel to the surface of the support plate, the first trigger part is configured as the second connecting plate, and the second trigger part is configured as the second limiting baffle plate.

[0010] In one embodiment of the utility model, the support plate is provided with a slot through which the lifting rope passes, the bracket is connected with first and second support shafts, the first support shaft is away from the slot relative to the second support shaft, the first support shaft is movably connected to the rear end of the support plate, and the second support shaft abuts against the support plate to limit the rotation range of the support plate away from the ascending limiting device.

[0011] In one embodiment of the utility model, the lifting hook assembly comprises a weight block connected with the lifting rope and a lifting hook connected with the weight block.

[0012] In one embodiment of the utility model, the fixed cantilever has a hollow structure and is provided with openings along the length direction of two sides, and the first rope guide pulley is rotatably connected to the inside of the fixed cantilever through a first connecting shaft.

[0013] In one embodiment of the utility model, the hanger cantilever has a hollow structure, the hanger cantilever is provided with a lifting rope outlet at the front end, the second rope guide pulley is rotatably connected to the inside of the hanger cantilever through a second connecting shaft, the third rope guide pulley is rotatably connected to the lifting rope outlet of the hanger cantilever through a third connecting shaft, and the rope grooves of the second and third rope guide pulleys are located in the same vertical plane.

[0014] In an embodiment of the utility model, the fixed cantilever is provided with a rope outlet below the first rope guide pulley, the hanger cantilever is provided with a rope inlet above the second rope guide pulley, the rotary support center is provided with a channel connecting the rope outlet and the rope inlet, and the rope outlet, the rope inlet and the channel are respectively aligned at the center.

[0015] The above technical scheme of the utility model has the following advantages compared with the prior art: The utility model discloses a material hoisting hanger, through setting rotary support between fixed cantilever and hanger cantilever, and utilizing limiting piece, can make hanger cantilever realize reliable locking at predetermined angle position, and this structure can flexibly adjust the lifting point position of hanger front end according to the on-site demand, and significantly improve the adaptability and convenience of hoisting operation.

[0016] The utility model discloses a lifting limiting device includes upper limit switch and upper limit limiting switch, and trigger plate sets first trigger part and second trigger part, realizes graded protection. When the hook rises to the first position, first trigger part triggers upper limit switch, makes rising action immediately stop, in the case where first limit fails, second trigger part triggers upper limit limiting switch, makes hook complete stop action and prohibits descending. This double safety design can effectively prevent misoperation and limit toppling accident, and significantly improve the operation safety of system. ACCURACY OF DRAWINGS

[0017] In order to make the content of the utility model more easily be clearly understood, the following according to the specific embodiment of the utility model and combining with the attached drawing, the utility model is further detailed.

[0018] Figure 1 It is the structure front view of the utility model material hoisting hanger.

[0019] Figure 2 It is Figure 1 The local enlarged view of.

[0020] Figure 3 It is the structure side view of the utility model material hoisting hanger.

[0021] Figure 4 It is the structure diagram of the utility model rotary support.

[0022] Figure 5 It is the structure main view of the utility model material hoisting hanger first visual angle axle side.

[0023] Figure 6 It is the structure main view of the utility model material hoisting hanger second visual angle axle side.

[0024] Figure 7It is the axial side structure main view of the third visual angle of the material lifting hanger.

[0025] Description of the drawings: 1, fixed cantilever; 11, opening; 12, rope outlet; 2, hanger cantilever; 21, lifting rope outlet; 22, rope inlet; 3, rotary support; 31, locking hole; 32, channel; 4, limiting piece; 51, first rope guide pulley; 52, second rope guide pulley; 53, third rope guide pulley; 54, first connecting shaft; 55, second connecting shaft; 56, third connecting shaft; 6, lifting rope; 7, upper limit position device; 71, upper limit position switch; 72, upper limit position switch; 73, support; 74, first support shaft; 75, second support shaft; 8, trigger plate; 81, first trigger part; 82, second trigger part; 83, support plate; 831, notch; 84, first limit stop plate; 841, first connecting plate; 842, second connecting plate; 85, second limit stop plate; 9, hook assembly; 91, weight block; 92, hook. DETAILED DESCRIPTION

[0026] The utility model makes further explanation in combination with the drawings and specific embodiment to make the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0027] In the utility model, if the direction (up, down, left, right, front and back) is described, it is only for the convenience of describing the technical scheme of the utility model, and is not indicated or implied that the indicated technical feature must have a specific orientation, a specific orientation structure and operation, so it cannot be understood as the limitation of the utility model.

[0028] In the utility model, the meaning of "several" is one or more, and the meaning of "multiple" is two or more, "more than", "less than", "exceed" and the like are not included in the number; "above", "below", "within" and the like are included in the number. In the description of the utility model, if "first" and "second" are described, they are only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0029] In the utility model, unless otherwise explicitly limited, the words such as ''set'', ''install'', ''connect'' should be understood in a broad sense, for example, can be directly connected, also can be indirectly connected through intermediate medium, can be fixedly connected, also can be detachably connected, can be integrally formed, can be mechanically connected, also can be electrically connected or can mutually communicate, can be the intercommunication of two elements or the interaction relationship of two elements.The person skilled in the art can combine the specific content of the technical scheme to reasonably determine the specific meaning of the above words in the utility model.

[0030] Referring to Figure 1 、 Figure 3 The utility model discloses a material hoist hanger, which comprises: Fixed cantilever 1 (fixed on window cleaning machine and the like equipment) and hanger cantilever 2; Slewing bearing 3 is installed between the hanger cantilever 2 and the fixed cantilever 1, so that the hanger cantilever 2 rotates around the axis of the slewing bearing 3 relative to the fixed cantilever 1; Limiting piece 4 is used to limit the rotation of the hanger cantilever 2 relative to the fixed cantilever 1 when the hanger cantilever 2 is at a predetermined position; First rope guide pulley 51 is installed on the fixed cantilever 1; Second rope guide pulley 52 and third rope guide pulley 53 are respectively installed on the rear end and front end of the hanger cantilever 2; Hanging rope 6 is connected with hook assembly 9 via the first rope guide pulley 51, the second rope guide pulley 52 and the third rope guide pulley 53; Upper limit stop device 7 is installed on the front end of the hanger cantilever 2 and comprises upper limit switch 71 and upper limit limit switch 72; Trigger plate 8 is movably connected to the front end of the hanger cantilever 2 and comprises first trigger part 81 and second trigger part 82; Wherein, the hook assembly 9 can lift the trigger plate 8 when rising to the first position, so that the first trigger part 81 contacts the upper limit switch 71;The second trigger part 82 can contact the upper limit limit switch 72 when the hook assembly 9 continues to rise from the first position to the second position.

[0031] It should be noted that the upper limit stop device 7 includes an upper limit switch 71 and an upper limit limit switch 72, and the trigger plate 8 is provided with a first trigger part 81 and a second trigger part 82 to achieve hierarchical protection. When the hook 92 rises to the first position, the first trigger part 81 triggers the upper limit switch 71, so that the rising action is immediately stopped; in the case of failure of the first limit, the second trigger part 82 triggers the upper limit limit switch 72, so that the hook 92 is completely stopped and prohibited from descending. The double safety design can effectively prevent misoperation and limit toppling accidents, and significantly improve the operation safety of the system.

[0032] In one embodiment, the outer ring of the slewing bearing 3 is mounted at the lower end of the fixed cantilever 1, and the inner ring of the slewing bearing 3 is connected with the flange of the hanger cantilever 2.

[0033] In one embodiment, referring to Figure 2 , the limit piece 4 is a locking pin mounted on the side wall of the hanger cantilever 2, and the outer ring of the slewing bearing 3 is provided with locking holes 31 capable of being inserted with the locking pin. By arranging the slewing bearing 3 between the fixed cantilever 1 and the hanger cantilever 2, and using the locking pin as the limit piece 4, the hanger cantilever 2 can be reliably locked at a predetermined angular position. This structure can flexibly adjust the lifting point position of the front end of the hanger according to the site requirements, and significantly improve the adaptability and convenience of the lifting operation.

[0034] In one embodiment, referring to Figure 5 , the upper limit stop device 7 further includes a bracket 73 mounted at the front end of the hanger cantilever 2, and the upper limit switch 71 and the upper limit limit switch 72 are respectively located on the two outer side walls of the bracket 73 along the width direction of the hanger cantilever 2.

[0035] In one embodiment, referring to Figure 6 , the trigger plate 8 includes a support plate 83, and a first limit baffle 84 and a second limit baffle 85 connected to the two sides of the support plate 83, the first limit baffle 84 includes a first connecting plate 841 perpendicular to the support plate 83 and a second connecting plate 842 obliquely connected to the first connecting plate 841, the second connecting plate 842 can be in contact with the upper limit switch 71, the second limit baffle 85 extends outward along the direction parallel to the surface of the support plate 83, the first trigger part 81 is configured as the second connecting plate 842, and the second trigger part 82 is configured as the second limit baffle 85. The trigger plate 8 adopts the combined structure of the support plate 83, the first limit baffle 84 and the second limit baffle 85, and through reasonable connection relationship and inclination design, the trigger plate 8 can stably swing when the hook assembly 9 is pushed, ensuring that the limit switch is triggered accurately and timely. At the same time, the first support shaft 74 and the second support shaft 75 limit the rotation range, ensuring that the trigger action is controllable, and avoiding mis-triggering caused by excessive swinging.

[0036] In one embodiment, referring to Figure 6 , the support plate 83 is provided with a slot 831 through which the hoisting rope 6 passes, the bracket 73 is connected with a first support shaft 74 and a second support shaft 75, the first support shaft 74 is away from the slot 831 relative to the second support shaft 75, the first support shaft 74 is movably connected with the rear end of the support plate 83, and the second support shaft 75 abuts against the support plate 83 to limit the rotation range of the support plate 83 away from the upward limiting device 7.

[0037] In one embodiment, referring to Figure 1 , the hoisting hook assembly 9 comprises a weight block 91 connected with the hoisting rope 6 and a hoisting hook 92 connected with the weight block 91. The hoisting hook assembly 9 is connected with the hoisting hook 92 through the weight block 91, so that the hoisting hook 92 maintains better verticality and force stability during operation, which is beneficial to improve the hoisting balance, reduce the swing of the hoisting hook 92, and improve the stability and safety of the material hoisting.

[0038] In one embodiment, the fixed cantilever 1 is of a hollow structure and is provided with openings 11 on both sides in the length direction, and the first rope guide pulley 51 is rotatably connected to the inside of the fixed cantilever 1 through a first connecting shaft 54.

[0039] In one embodiment, referring to Figure 5 , Figure 7 , the hanger cantilever 2 is of a hollow structure, the hanger cantilever 2 is provided with a hoisting rope outlet 21 at the front end, the second rope guide pulley 52 is rotatably connected to the inside of the hanger cantilever 2 through a second connecting shaft 55, the third rope guide pulley 53 is rotatably connected to the hoisting rope outlet 21 of the hanger cantilever 2 through a third connecting shaft 56, and the rope grooves of the second rope guide pulley 52 and the third rope guide pulley 53 are located in the same vertical plane.

[0040] In one embodiment, the fixed cantilever 1 is provided with a rope outlet 12 on the lower side of the first rope guide pulley 51, the hanger cantilever 2 is provided with a rope inlet 22 on the upper side of the second rope guide pulley 52, the center of the slewing bearing 3 is provided with a passage 32 connecting the rope outlet 12 and the rope inlet 22, and the centers of the rope outlet 12, the rope inlet 22 and the passage 32 are aligned. The first rope guide pulley 51, the second rope guide pulley 52 and the third rope guide pulley 53 are arranged in sequence, and the rope outlet 12, the rope inlet 22 and the rope groove of each pulley are strictly aligned with the center position of the slewing bearing 3, so that the steel wire rope is always located at the rotation center during the rotation adjustment of the hanger cantilever 2, preventing the steel wire rope from jumping, wearing or being stuck due to the deviation of the rope, and ensuring the smooth and reliable transmission path.

[0041] The hanger cantilever 2 is rotated around the rotary support 3 to a target position by artificial pushing, and then the outer ring of the rotary support 3 is locked by the locking pin, so that the rotation is prevented, thereby realizing the adjustable and fixed position of the front end lifting point of the hanger cantilever 2. During the installation process, it is necessary to ensure that the rope outlet 12 of the first rope guide pulley 51 and the rope inlet 22 of the second rope guide pulley 52 are aligned with each other and consistent with the center of the rotary support 3, so as to ensure that the steel wire rope (sling rope 6) is always at the center position of the rotary support 3 during the transition between the first rope guide pulley 51 and the second rope guide pulley 52, so that the relative position does not deviate. The rope grooves of the second rope guide pulley 52 and the third rope guide pulley 53 need to be aligned, and the steel wire rope is sequentially transmitted from the first rope guide pulley 51 to the second rope guide pulley 52 and the third rope guide pulley 53, and then the third rope guide pulley 53 is led out through the sling rope outlet 21 and connected to the lifting hook 92, thereby realizing the lifting movement of the lifting hook 92.

[0042] The front end of the hanger cantilever 2 is provided with a double lifting limit protection device, including an upper limit switch 71 and an upper limit limit switch 72. When the lifting hook 92 rises, the lifting hook assembly 9 (the weight block 91) pushes the trigger plate 8, the first limit baffle 84 triggers the upper limit switch 71 first, so that the lifting action of the lifting hook 92 is immediately stopped, at this time, only descending is allowed, and ascending is not allowed. When the upper limit switch 71 is abnormal or not triggered, the lifting hook 92 continues to rise and further pushes up the trigger plate 8, the second limit baffle 85 triggers the upper limit limit switch 72, so that the lifting and descending actions of the lifting hook 92 are all prohibited. At this time, professional personnel need to troubleshoot and maintain in time until the system returns to normal state, and then the lifting hook 92 can be restored to the descending function by artificial way.

[0043] Finally, it should be explained that the above specific embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A material lifting frame, characterized in that, include: Fixed cantilever (1) and hanger cantilever (2); A slewing bearing (3) is installed between the hanger cantilever (2) and the fixed cantilever (1) so that the hanger cantilever (2) rotates relative to the fixed cantilever (1) about the axis of the slewing bearing (3); The limiting member (4) is used to restrict the rotation of the hanger cantilever (2) relative to the fixed cantilever (1) when the hanger cantilever (2) is in a predetermined position; The first guide rope pulley (51) is installed on the fixed cantilever (1); The second guide rope pulley (52) and the third guide rope pulley (53) are respectively installed at the rear end and the front end of the cantilever (2) of the hanger; The hoisting rope (6) is connected to the hook assembly (9) after passing through the first guide rope pulley (51), the second guide rope pulley (52) and the third guide rope pulley (53); The upper limit device (7) is installed at the front end of the cantilever (2) of the hanger and includes an upper limit switch (71) and an upper limit switch (72). The trigger plate (8) is movably connected to the front end of the cantilever arm (2) of the hanger, and includes a first trigger part (81) and a second trigger part (82). When the hook assembly (9) rises to the first position, it can lift the trigger plate (8) so that the first trigger part (81) contacts the upper limit switch (71); when the hook assembly (9) continues to rise from the first position to the second position, it can make the second trigger part (82) contact the upper limit switch (72).

2. The material lifting frame according to claim 1, characterized in that, The outer ring of the slewing bearing (3) is installed at the lower end of the fixed cantilever (1), and the inner ring of the slewing bearing (3) is connected to the flange of the hanger cantilever (2).

3. The material lifting frame according to claim 1, characterized in that, The limiting member (4) is a locking pin installed on the side wall of the cantilever (2) of the hanger, and the outer ring of the slewing bearing (3) is provided with locking holes (31) that can be inserted into the locking pin.

4. The material lifting frame according to claim 1, characterized in that, The rising limit device (7) also includes a bracket (73) installed at the front end of the hanger cantilever (2), and the upper limit switch (71) and the upper limit switch (72) are respectively located on the two outer side walls of the bracket (73) along the width direction of the hanger cantilever (2).

5. A material lifting frame according to claim 4, characterized in that, The trigger plate (8) includes a support plate (83) and a first limiting baffle (84) and a second limiting baffle (85) connected to both sides of the support plate (83). The first limiting baffle (84) includes a first connecting plate (841) perpendicular to the support plate (83) and a second connecting plate (842) inclined to the first connecting plate (841). The second connecting plate (842) can contact the upper limit switch (71). The second limiting baffle (85) extends outward in a direction parallel to the surface of the support plate (83). The first trigger part (81) is configured as the second connecting plate (842), and the second trigger part (82) is configured as the second limiting baffle (85).

6. The material lifting frame according to claim 5, characterized in that, The support plate (83) is provided with a slot (831) for the hoisting rope (6) to pass through. The bracket (73) is connected to a first support shaft (74) and a second support shaft (75). The first support shaft (74) is away from the slot (831) relative to the second support shaft (75). The first support shaft (74) is movably connected to the rear end of the support plate (83). The second support shaft (75) abuts against the support plate (83) to limit the rotation range of the support plate (83) away from the lifting limit device (7).

7. A material lifting frame according to claim 1, characterized in that, The hook assembly (9) includes a weight block (91) connected to the lifting rope (6) and a hook (92) connected to the weight block (91).

8. A material lifting frame according to claim 1, characterized in that, The fixed cantilever (1) has a hollow structure and openings (11) are provided on both sides along the length direction. The first guide rope pulley (51) is rotatably connected to the inside of the fixed cantilever (1) through the first connecting shaft (54).

9. A material lifting frame according to claim 1, characterized in that, The cantilever arm (2) of the hanger has a hollow structure. The front end of the cantilever arm (2) is provided with a rope outlet (21). The second guide rope pulley (52) is rotatably connected to the inside of the cantilever arm (2) through the second connecting shaft (55). The third guide rope pulley (53) is rotatably connected to the rope outlet (21) of the cantilever arm (2) through the third connecting shaft (56). The rope grooves of the second guide rope pulley (52) and the third guide rope pulley (53) are located in the same vertical plane.

10. A material lifting frame according to claim 1, characterized in that, The fixed cantilever (1) is provided with a rope outlet (12) on the lower side of the first guide rope pulley (51), and the hanger cantilever (2) is provided with a rope inlet (22) on the upper side of the second guide rope pulley (52). The slewing bearing (3) is provided with a channel (32) at its center connecting the rope outlet (12) and the rope inlet (22). The rope outlet (12), the rope inlet (22), and the channel (32) are all aligned at their centers.

Images