Car frame of load-carrying freight elevator

Abstract

The utility model discloses a car frame of a load-carrying freight elevator. The car frame comprises a car bottom platform, a main portal frame, two auxiliary portal frames, main and auxiliary connecting beams and main and auxiliary cable-stayed frames, wherein the main portal frame and the two auxiliary portal frames are used for bearing the car bottom platform; the main and auxiliary connecting beams are arranged above the car bottom platform in the vertical direction and are respectively connected with the main portal frame and the auxiliary portal frame; the main cable-stayed frame and the auxiliary cable-stayed frame are arranged above the car bottom platform in the vertical direction and connected with the main portal frame and the auxiliary portal frame respectively. An acute angle is formed between the length direction of the main and auxiliary cable-stayed frames and the length direction of the main and auxiliary connecting beams. The main portal frame and the auxiliary portal frame are arranged, so that a triangular stable structure can be formed between the main portal frame and the auxiliary portal frame, the top of the car frame can be supported, the overall rigidity and stability of the car frame are improved, and in the normal loading and unloading process and the emergency braking process of the car frame, the overall car frame is prevented from sinking due to overweight loads.

Description

Technical Field

[0001] The utility model belongs to the technical field related to elevators, and particularly relates to a car frame of a heavy-duty freight elevator. Background Art

[0002] In the rapidly developing modern society, the demand in the logistics industry is increasing day by day. Especially in the heavy industry field, the demand for freight elevators with extra-large load capacity is becoming more and more urgent. Large-load goods are often transported in and out of the car through forklifts. The large weight of the goods and the forklift itself will cause the overall deformation of the car frame, thus affecting the operation safety of the freight elevator.

[0003] At present, the car frames of existing heavy-duty freight elevators generally adopt a main gantry and two sub-gantry frames respectively connected to the car bottom platform. The main gantry and the two sub-gantry frames are connected by main and sub-connecting beams. The straight beams on the main gantry and the sub-gantry frames respectively pull the car bottom platform through diagonal tie rods. Among them, the two sub-gantry frames are used to control the lifting of the car frame, and there is a safety clamp on the main gantry for braking the car frame in case of emergency. However, for extra-large heavy-duty freight elevators that need to carry 20 tons or more, the overall stiffness of the above-mentioned heavy-duty freight elevator car frame is insufficient, making the car bottom platform prone to plastic deformation during loading and unloading. Seriously, when the safety clamp on the main gantry acts on the car frame, it will cause permanent deformation of the car frame. Summary of the Utility Model

[0004] In view of this, it is necessary to provide a car frame of a heavy-duty freight elevator with enhanced bottom support, enhanced top support, improved overall stiffness, and improved stability.

[0005] A car frame of a heavy-duty freight elevator, the car frame comprising:

[0006] A car bottom platform for carrying goods;

[0007] A main gantry connected to the car bottom platform for carrying the car bottom platform;

[0008] Two sub-gantry frames arranged on both sides of the main gantry in the horizontal direction and respectively connected to the car bottom platform for carrying the car bottom platform;

[0009] Main and sub-connecting beams arranged above the car bottom platform in the vertical direction, and the main and sub-connecting beams are respectively connected to the main gantry and the sub-gantry frames;

[0010] Main and sub-diagonal tension frames arranged above the car bottom platform in the vertical direction, and the main and sub-diagonal tension frames are respectively connected to the main gantry and the sub-gantry frames;

[0011] Wherein, an acute angle is formed between the length direction of the main and sub-diagonal tension frames and the length direction of the main and sub-connecting beams.

[0012] It can be understood that by using the main and auxiliary diagonal braces located above the car bottom platform to connect the main gantry and the auxiliary gantry, a triangular stable structure can be formed between the main gantry and the auxiliary gantry, so as to realize the top support of the car frame, improve the overall stiffness and stability of the car frame, and prevent the overall car frame from sinking due to excessive load during the normal loading and unloading process and the emergency braking process of the car frame.

[0013] In one embodiment, two of the main and auxiliary diagonal braces are respectively connected between each of the auxiliary gantries and the main gantry;

[0014] Among them, the two main and auxiliary diagonal braces on the same side are symmetrically arranged with the main straight beam on the main gantry as the axis of symmetry to form an isosceles triangle car frame top support structure.

[0015] It can be understood that through the above structural settings, the acting force magnitudes during the power transmission between the main and auxiliary diagonal braces can be made equal between each auxiliary gantry and the main gantry, so as to further improve the overall stiffness and stability of the car frame.

[0016] In one embodiment, the main gantry further includes a main upper beam, the main and auxiliary connecting beam abuts against the main straight beam and is connected to the main straight beam, and the main upper beam is fixedly connected to one end of the main straight beam that extends upward in the vertical direction beyond the main and auxiliary connecting beam;

[0017] Among them, the car frame further includes a support beam, the support beam is arranged between the main and auxiliary connecting beam and the main upper beam, the upper and lower end faces of the support beam respectively abut against the main upper beam and the main and auxiliary connecting beam, and the outer side face of the support beam abuts against the main straight beam.

[0018] It can be understood that through the above structural settings, the support beam can realize the power transmission between the main and auxiliary connecting beam and the main upper beam. When the car frame is normally lifted and lowered, when the two auxiliary gantries drive the main gantry to lift and lower synchronously through the main and auxiliary connecting beam, there is an additional force transmission, so that the overall stiffness and stability of the car frame can be further improved.

[0019] In one embodiment, the car frame further includes a first vertical plate, the first vertical plate includes a first plate body and a second plate body, the first plate body abuts against and is connected to the main upper beam in the first side groove of the main upper beam, and moreover, the second plate body is arranged in the extending direction of the support beam in the vertical direction, one end of the main and auxiliary diagonal brace abuts against the second plate body and is connected to the second plate body, and the other end of the main and auxiliary diagonal brace is connected to the second vertical plate in the second side groove of the auxiliary upper beam in the auxiliary gantry.

[0020] It can be understood that through the above structural settings, the assembly connection between the main and auxiliary stay frames and the main upper beam in the main gantry and the auxiliary upper beam in the auxiliary gantry is specifically realized. This facilitates the assembly of the main and auxiliary stay frames between the main gantry and the auxiliary gantry. During this process, the support beam can also play a role in supporting the assembly of the main and auxiliary stay frames on the main upper beam.

[0021] In one embodiment, two main and auxiliary support frames are respectively connected between each of the auxiliary gantries and the main gantry, and the main and auxiliary support frames are arranged below the car bottom platform in the vertical direction.

[0022] Among them, the two main and auxiliary support frames on the same side are symmetrically arranged with the main straight beam on the main gantry as the axis of symmetry to form an inverted triangular support structure at the bottom of the car frame. Moreover, the support structure at the bottom of the car frame and the support structure at the top of the car frame are in the same plane.

[0023] It can be understood that through the above structural settings, the inverted triangular support structure of the car frame formed by the two main and auxiliary support frames can support the bottom of the car frame, which can further improve the overall stiffness and stability of the car frame.

[0024] In one embodiment, the thickness of the main lower beam on the main gantry is greater than the thickness of the auxiliary lower beam on the auxiliary gantry.

[0025] Among them, one end of the main and auxiliary support frame is installed on the third vertical plate of the third side groove of the main lower beam, and the other end of the main and auxiliary support frame is installed on the fourth vertical plate of the fourth side groove of the auxiliary lower beam.

[0026] It can be understood that through the above structural settings, the assembly connection between the main and auxiliary support frames and the main lower beam in the main gantry and the auxiliary lower beam in the auxiliary gantry is specifically realized. This facilitates the assembly of the main and auxiliary support frames between the main gantry and the auxiliary gantry.

[0027] In one embodiment, the main lower beam includes an independent main lower beam upper part and a main lower beam lower part. The main lower beam lower part is arranged below the main lower beam upper part in the vertical direction and is connected to the main lower beam upper part.

[0028] Among them, the third vertical plate is fixedly installed on the main lower beam lower part.

[0029] In one embodiment, at least one of the main lower beam upper part and the main lower beam lower part includes symmetrically arranged first side walls and second side walls, and the first side walls and the second side walls are connected by a plurality of C-shaped reinforcing ribs. Two adjacent C-shaped reinforcing ribs among the plurality of C-shaped reinforcing ribs are arranged oppositely.

[0030] Wherein, the bottoms of the first side wall and the second side wall are also connected by a hollow plate.

[0031] It can be understood that through the above structural settings, the overall structural strength of the lower part of the main lower beam can be further improved to meet the usage requirements of carrying the main and auxiliary support frames.

[0032] In one embodiment, the main lower beam includes a bottom support plate, a first side plate, a second side plate, and an intermediate connecting rib. The first side plate and the second side plate are disposed on both sides of the bottom support plate and are respectively connected to the bottom support plate. The intermediate connecting rib is disposed on the bottom support plate and is connected to the bottom support plate.

[0033] Wherein, the bottom support plate, the intermediate connecting rib, and the second side plate enclose to form the third side groove. The main lower beam can also adopt an integrally thickened structure.

[0034] In one embodiment, the car frame further includes at least four groups of diagonal bracing components. At least four groups of the diagonal bracing components are respectively connected to the main and auxiliary connecting beams and the car bottom platform to form a diagonal bracing structure of the car bottom platform.

[0035] Wherein, at least four groups of the diagonal bracing components are symmetrically arranged in the front-back direction of the car frame, and at least four groups of the diagonal bracing components are symmetrically arranged in the left-right direction of the car frame relative to the main gantry frame.

[0036] It can be understood that using at least four groups of diagonal bracing components to connect the main and auxiliary connecting beams and the car bottom platform can play a role in diagonal bracing the car bottom platform. In this way, it also prevents the car frame from deforming downward during normal loading and unloading processes and emergency braking processes.

[0037] In one embodiment, the diagonal bracing component includes two diagonal rod bodies. The two diagonal rod bodies are arranged on the left and right sides of the upper sub-vertical beam of the corresponding sub-gantry frame.

[0038] Wherein, one end of the diagonal rod body is connected to the main and auxiliary connecting beam, and the other end of the diagonal rod body is connected to the car bottom platform through a connecting component.

[0039] In one embodiment, the connecting component includes a connecting seat and a connecting screw. The connecting seat is fixedly connected to the car bottom platform. The connecting screw passes through the connecting seat and is screwed to the connecting seat. One end of the connecting screw away from the connecting seat is inserted into the diagonal rod body and is screwed to the diagonal rod body.

[0040] It can be understood that through the above structural settings, the assembly of the diagonal tie rod body on the car bottom platform is specifically realized, which facilitates the assembly connection between the diagonal tie rod body and the car bottom platform. During this process, the thread fitting structure can also be used to adjust the assembly position between the diagonal tie rod body and the car bottom platform.

[0041] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0042] For the car frame of the load-carrying freight elevator claimed in this application, by using the main and auxiliary diagonal braces located above the car bottom platform to connect the main gantry and the auxiliary gantry, a triangular stable structure can be formed between the main gantry and the auxiliary gantry, so as to realize the top support of the car frame, improve the overall stiffness and stability of the car frame, and prevent the overall car frame from sinking due to excessive load during the normal loading and unloading process and the emergency braking process of the car frame. Brief Description of the Drawings

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0044] Figure 1 It is a three-dimensional view of the car frame of the load-carrying freight elevator provided by an embodiment of the present application.

[0045] Figure 2 For Figure 1 The enlarged view of part A in

[0046] Figure 3 For Figure 1 The enlarged view of part B in

[0047] Figure 4 It is another three-dimensional view of the car frame of the load-carrying freight elevator provided by an embodiment of the present application.

[0048] Figure 5 For Figure 4 The enlarged view of part C in

[0049] Figure 6 For Figure 4 The enlarged view of part D in

[0050] Figure 7 It is the front view of the car frame of the load-carrying freight elevator provided by an embodiment of the present application.

[0051] Reference numerals: 100, car frame; 10, car bottom platform; 20, main gantry; 21, main straight beam; 22, main upper beam; 221, first guide shoe; 222, first side groove; 23, main lower beam; 231, safety clamp; 232, second guide shoe; 233, third side groove; 234, upper part of main lower beam; 235, lower part of main lower beam; 2351, first side wall; 2352, second side wall; 2353, C-shaped stiffener; 2354, hollow plate; 30, auxiliary gantry; 31, auxiliary straight beam; 32, auxiliary upper beam; 321, third guide shoe; 322, second side groove; 33, auxiliary lower beam; 331, fourth guide shoe; 332, fourth side groove; 40, main-auxiliary connecting beam; 50, main-auxiliary diagonal tension frame; 51, first vertical plate; 511, first plate body; 512, second plate body; 52, second vertical plate; 60, main-auxiliary support frame; 61, third vertical plate; 62, fourth vertical plate; 70, support beam; 71, support beam body; 72, support bottom plate; 80, diagonal tension frame assembly; 81, diagonal tension rod body; 82, connecting assembly; 821, connecting seat; 822, connecting screw; 83, connecting cushion block. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0053] It should be noted that when an element is referred to as being "provided on" another element, it can be directly provided on the other element or there can also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0055] The car frame 100 claimed in this application specifically refers to the car frame of an extra-large load freight elevator with a load capacity of 20 tons or more.

[0056] AsFigure 1 , Figure 4 and Figure 7 As shown in Figure 1 , Figure 4 and Figure 7 , the car frame 100 of a load-carrying elevator provided by an embodiment of the present application includes a car bottom platform 10, a main gantry 20, two auxiliary gantries 30, a main-auxiliary connecting beam 40 and a main-auxiliary stay 50; the car bottom platform 10 is used to carry goods; the main gantry 20 is connected to the car bottom platform 10 and is used to carry the car bottom platform 10; the two auxiliary gantries 30 are arranged on both sides of the main gantry 20 in the horizontal direction and are respectively connected to the car bottom platform 10, and are used to carry the car bottom platform 10; the main-auxiliary connecting beam 40 is arranged above the car bottom platform 10 in the vertical direction, and the main-auxiliary connecting beam 40 is respectively connected to the main gantry 20 and the auxiliary gantry 30; the main-auxiliary stay 50 is arranged above the car bottom platform 10 in the vertical direction, and the main-auxiliary stay 50 is respectively connected to the main gantry 20 and the auxiliary gantry 30; wherein, an acute angle is formed between the length direction of the main-auxiliary stay 50 and the length direction of the main-auxiliary connecting beam 40. Here, the car frame 100 includes two main-auxiliary connecting beams 40, and each main-auxiliary connecting beam 40 is simultaneously connected to two auxiliary gantries 30 and a main gantry 20.

[0057] It can be understood that the main-auxiliary stay 50 located above the car bottom platform 10 is used to connect the main gantry 20 and the auxiliary gantry 30, so that a triangular stable structure can be formed between the main gantry 20 and the auxiliary gantry 30, which can realize the top support of the car frame 100, improve the overall stiffness and stability of the car frame 100, and prevent the overall car frame 100 from sinking due to excessive load during the normal loading and unloading process and the emergency braking process of the car frame 100.

[0058] It should be noted that in the car frame 100 of the present application, the two auxiliary gantries 30 are used as the power source for the normal lifting and lowering of the car frame 100, and the safety clamp 231 for controlling the emergency braking of the car frame 100 is installed on the main gantry 20. When the car frame 100 is lifted and lowered normally, the auxiliary gantry 30 can drive the main gantry 20 to lift and lower synchronously through the main-auxiliary connecting beam 40 and the car bottom platform 10. When the car frame 100 is emergently braked through the safety clamp 231, the main gantry 20 can synchronously brake the two auxiliary gantries 30 and the car bottom platform 10 through the main-auxiliary connecting beam 40 and the car bottom platform 10.

[0059] As Figure 1 , Figure 4 and Figure 7As shown, the main gantry 20 includes two main straight beams 21, a main upper beam 22 and a main lower beam 23. The main upper beam 22 and the main lower beam 23 are arranged at both ends of the two main straight beams 21 in the vertical direction and are respectively connected to the main straight beams 21. Among them, first guide shoes 221 are respectively installed at both ends of the main upper beam 22, and safety calipers 231 and second guide shoes 232 are successively installed at both ends of the main lower beam 23 in the vertical direction. Here, the car bottom platform 10 is arranged on the main lower beam 23 and is connected to the main lower beam 23. The first guide shoes 221 and the second guide shoes 232 are used for sliding cooperation with corresponding guide rails (not shown in the figure) to guide and limit the lifting of the main gantry 20, and the safety calipers 231 are used for emergency braking of the main gantry 20.

[0060] As Figure 1 , Figure 4 and Figure 6 shown, the auxiliary gantry 30 includes two auxiliary straight beams 31, an auxiliary upper beam 32 and an auxiliary lower beam 33. The auxiliary upper beam 32 and the auxiliary lower beam 33 are arranged at both ends of the two auxiliary straight beams 31 in the vertical direction and are respectively connected to the auxiliary upper beam 32 and the auxiliary lower beam 33. Among them, third guide shoes 321 are respectively installed at both ends of the auxiliary upper beam 32, and fourth guide shoes 331 are respectively installed at both ends of the auxiliary lower beam 33. Here, the car bottom platform 10 is arranged on the auxiliary lower beam 33 and is connected to the auxiliary lower beam 33. The third guide shoes 321 and the fourth guide shoes 331 are used for sliding cooperation with corresponding guide rails (not shown in the figure) to guide and limit the lifting of the auxiliary gantry 30.

[0061] As Figure 1 , Figure 4 and Figure 7 shown, the main-auxiliary connection beam 40 extends along the horizontal direction and is respectively connected and fixed to the main straight beam 21 and the two auxiliary straight beams 31, so that the main gantry 20 and the two auxiliary gantries 30 are connected into one body. Here, the number of the main-auxiliary connection beams 40 is configured to be two.

[0062] Preferably, as Figure 1 , Figure 4 and Figure 7As shown, the car frame 100 further includes at least four groups of stay frame assemblies 80. The at least four groups of stay frame assemblies 80 are respectively connected to the main and auxiliary connecting beams 40 and the car bottom platform 10 to form a stay support structure for the car bottom platform 10, so as to improve the overall torsional resistance performance of the car frame 100. Among them, the at least four groups of stay frame assemblies 80 are symmetrically arranged in the front-rear direction of the car frame 100, and the at least four groups of stay frame assemblies 80 are symmetrically arranged in the left-right direction of the car frame 100 relative to the main gantry 20. When the car frame 100 is moving up and down normally, the main and auxiliary connecting beams 40 can synchronously stay the car bottom platform 10 through the stay frame assemblies 80, which can further improve the overall stiffness and stability of the car frame 100 and prevent the car bottom platform 10 from deforming downward during the loading and unloading process and the emergency braking process of the car frame 100. Here, the number of the stay frame assemblies 80 is four groups. Among them, each group of stay frame assemblies 80 is symmetrically arranged in the left-right direction of the car frame 100 relative to the auxiliary straight beam 31 of a sub-gantry 30. It can be understood that the number of the stay frame assemblies 80 can also be eight groups, twelve groups, etc., which will not be elaborated here.

[0063] As Figure 5 shown, the stay frame assembly 80 includes two stay rod bodies 81. The two stay rod bodies 81 are arranged on both sides of the corresponding auxiliary straight beam 31 of the sub-gantry 30 in the left-right direction of the car frame 100. Among them, one end of the stay rod body 81 is connected to the main and auxiliary connecting beam 40, and the other end of the stay rod body 81 is connected to the car bottom platform 10 through a connecting component 82. Here, a connecting cushion block 83 is assembled on the main and auxiliary connecting beam 40 by welding, and one end of the stay rod body 81 abuts against the connecting cushion block 83, and then is fixed with a bolt and nut assembly.

[0064] As Figure 2 shown, the connecting component 82 includes a connecting seat 821 and a connecting screw 822. The connecting seat 821 is fixedly connected to the car bottom platform 10. Specifically, the assembly connection between the connecting seat 821 and the car bottom platform 10 is realized by welding. The connecting screw 822 passes through the connecting seat 821 and is screwed with the connecting seat 821. One end of the connecting screw 822 away from the connecting seat 821 is inserted into the stay rod body 81 and is screwed with the stay rod body 81. In this way, the assembly of the stay rod body 81 on the car bottom platform 10 is specifically realized. Using the threaded fit structure, not only can the assembly connection between the stay rod body 81 and the car bottom platform 10 be facilitated, but also the adjustment of the assembly position between the stay rod body 81 and the car bottom platform 10 can be realized.

[0065] As Figure 1 、 Figure 4 and Figure 7As shown, the main gantry 20 of the present application extends partially outward relative to the auxiliary gantry 30 in the vertical direction, and the main and auxiliary stay frames 50 are arranged above the main and auxiliary connecting beams 40 in the vertical direction, and the main and auxiliary stay frames 50 are respectively connected to the main upper beam 22 of the main gantry 20 and the auxiliary upper beam 32 of the auxiliary gantry 30. It can be understood that in other embodiments, the main and auxiliary stay frames 50 can also be connected to the main straight beam 21 of the main gantry 20 and the auxiliary straight beam 31 of the auxiliary gantry 30. It should be noted that the main and auxiliary stay frames 50 and the main upper beam 22 and the auxiliary upper beam 32 can be connected by means of bolt and nut assemblies, welding, etc., and will not be elaborated here.

[0066] As Figure 1 , Figure 4 and Figure 7 shown, two main and auxiliary stay frames 50 are respectively connected between each auxiliary gantry 30 and the main gantry 20; among them, the two main and auxiliary stay frames 50 on the same side are symmetrically arranged with the main straight beam 21 on the main gantry 20 as the axis of symmetry to form an isosceles triangle top support structure of the car body frame, so that the acting forces during power transmission between each auxiliary gantry 30 and the main gantry 20 through the main and auxiliary stay frames 50 are equal in magnitude, which can further improve the overall stiffness and stability of the car body frame 100. Here, the main and auxiliary stay frames 50 can specifically be C-channel steel structures. By utilizing the structural characteristics of the C-channel steel structures, the anti-bending performance of the main and auxiliary stay frames 50 can be improved.

[0067] As Figure 3 , Figure 5 shown, the car body frame 100 further includes a first vertical plate 51 and a second vertical plate 52. One end of the main and auxiliary stay frame 50 is connected to the main upper beam 22 through the first vertical plate 51, and the other end of the main and auxiliary stay frame 50 is connected to the auxiliary upper beam 32 through the second vertical plate 52. Here, the connection method when one end of the main and auxiliary stay frame 50 is connected to the main upper beam 22 through the first vertical plate 51 is the same as the connection method when the other end of the main and auxiliary stay frame 50 is connected to the auxiliary upper beam 32 through the second vertical plate 52.

[0068] As Figure 3 shown, the first vertical plate 51 includes a first plate body 511 and a second plate body 512 that are perpendicularly arranged. The first plate body 511 abuts against the first side groove 222 of the main upper beam 22 and is connected to the main upper beam 22, specifically by using a bolt and nut assembly for connection. The second plate body 512 abuts against one end of the main and auxiliary stay frame 50 and is connected to the main and auxiliary stay frame 50, specifically also by using a bolt and nut assembly for connection. The inverted triangle bottom support structure formed by the two main and auxiliary support frames 60 can support the bottom of the car body frame 100, which can further improve the overall stiffness and stability of the car body frame 100.

[0069] As Figure 1, Figure 4 and Figure 7 As shown in Figure 4 and Figure 7 , two main - sub support frames 60 are respectively connected between each auxiliary gantry 30 and the main gantry 20. The main - sub support frames 60 are arranged below the car - bottom platform 10 in the vertical direction. Among them, the two main - sub support frames 60 on the same side are symmetrically arranged with the main straight beam 21 on the main gantry 20 as the axis of symmetry, so as to form an inverted - triangle support structure at the bottom of the car frame. Moreover, the support structure at the bottom of the car frame and the support structure at the top of the car frame are located on the same plane.

[0070] As Figure 2 shown, the thickness of the main lower beam 23 on the main gantry 20 is greater than the thickness of the auxiliary lower beam 33 on the auxiliary gantry 30. Among them, one end of the main - sub support frame 60 is installed on the third vertical plate 61 of the third - side groove 233 of the main lower beam 23, and the other end of the main - sub support frame 60 is installed on the fourth vertical plate 62 of the fourth - side groove 332 of the auxiliary lower beam 33. In this way, the assembly connection of the main - sub support frame 60 between the main gantry 20 and the auxiliary gantry 30 is specifically realized. Here, the third vertical plate 61 is arranged on the part where the main lower beam 23 extends downward relative to the auxiliary lower beam 33 in the vertical direction. It can be understood that in other embodiments, both ends of the main - sub support frame 60 can also be connected to the main straight beam 21 of the main gantry 20 and the auxiliary straight beam 31 of the auxiliary gantry 30. It should be noted that the connection method of how one end of the above - mentioned main - sub support frame 60 is connected to the main lower beam 23 through the third vertical plate 61, and the connection method of how the other end of the main - sub support frame 60 is connected to the auxiliary lower beam 33 through the fourth vertical plate 62 are the same as the connection method of how one end of the above - mentioned main - sub diagonal tension frame 50 is connected to the main upper beam 22 through the first vertical plate 51, and will not be elaborated here.

[0071] As Figure 2 shown, the main lower beam 23 includes an independent main - lower - beam upper part 234 and a main - lower - beam lower part 235. The main - lower - beam lower part 235 is arranged below the main - lower - beam upper part 234 in the vertical direction and is connected to the main - lower - beam upper part 234. Among them, the third vertical plate 61 is fixedly installed on the main - lower - beam lower part 235. Here, the main - lower - beam upper part 234 and the main - lower - beam lower part 235 are connected and fixed by welding.

[0072] Preferably, as Figure 6As shown, at least one of the upper part 234 and the lower part 235 of the main lower beam includes symmetrically arranged first side wall 2351 and second side wall 2352, and a plurality of C-shaped reinforcing ribs 2353 are used to connect between the first side wall 2351 and the second side wall 2352, and two adjacent C-shaped reinforcing ribs 2353 among the plurality of C-shaped reinforcing ribs 2353 are arranged oppositely; wherein, the bottom of the first side wall 2351 and the bottom of the second side wall 2352 are also connected by a hollow plate 2354. This can further improve the overall structural strength of the lower part 235 of the main lower beam to meet the use requirements of bearing the main and auxiliary support frames 60. In one embodiment, the upper part 234 and the lower part 235 of the main lower beam have the same structure, and are both formed by connecting the first side wall 2351, the second side wall 2352, a plurality of C-shaped reinforcing ribs 2353 and the hollow plate 2354.

[0073] As Figure 1 , Figure 4 shown, the car frame 100 further includes a support beam 70, and the support beam 70 is arranged between the main and auxiliary connecting beam 40 and the main upper beam 22, so that the main and auxiliary connecting beam 40 can perform power transmission with the main upper beam 22 through the support beam 70, so that when the car frame 100 is lifted and lowered normally, when the two auxiliary gantry frames 30 drive the main gantry frame 20 to lift and lower synchronously through the main and auxiliary connecting beam 40, there is an additional force transmission, which can further improve the overall stiffness and stability of the car frame 100. Here, the first plate body 511 on the first vertical plate 51 for connecting the main and auxiliary stay frames 50 and the main upper beam 22 is arranged in the extending direction of the support beam 70 in the vertical direction, so that the support beam 70 can also play a role in supporting the connection between the main and auxiliary stay frames 50 and the main upper beam 22. It should be noted that the support beam 70 of the present application abuts against the main upper beam 22 or the main and auxiliary connecting beam 40 in a face-to-face manner, which can improve the stability of the force transmission between the main upper beam 22 and the main and auxiliary connecting beam 40.

[0074] As Figure 3 shown, the upper and lower end faces of the support beam 70 respectively abut against the main upper beam 22 and the main and auxiliary connecting beam 40. Specifically, one end of the support beam 70 abuts against the main and auxiliary connecting beam 40, and the other end of the support beam 70 abuts against the main upper beam 22; or, the support beam 70 is connected to the main and auxiliary connecting beam 40 and / or the main upper beam 22. That is to say, the support beam 70 can be connected or not connected to the main and auxiliary connecting beam 40 and / or the main upper beam 22 according to the use requirements, which is convenient for the assembly of the support beam 70 between the main and auxiliary connecting beam 40 and the main upper beam 22.

[0075] Preferably, as Figure 3As shown in the figure, the outer side surface of the support beam 70 abuts against the main straight beam 21, that is, the support beam 70 is in contact with the main straight beam 21. In this way, by the contact between the support beam 70 and the main straight beam 21, on the one hand, it can play a role in limiting the assembly of the support beam 70 to facilitate the assembly of the support beam 70, and on the other hand, it can also support the support beam 70 to prevent the support beam 70 from bending during the force transmission process and ensure the stability of the support beam 70 during the force transmission process.

[0076] As Figure 3 shown in the figure, the support beam 70 includes a support beam body 71 and a support bottom plate 72. The support beam body 71 is U-shaped, and the support bottom plate 72 is arranged at one end of the support beam body 71 and connected to the support beam body 71. When the support beam 70 is assembled between the main and auxiliary connecting beams 40 and the main upper beam 22, the outer side surface of the support beam body 71 of the support beam 70 abuts against the main straight beam 21, and the support bottom plate 72 abuts against the main and auxiliary connecting beams 40. Moreover, one end of the support beam body 71 away from the support bottom plate 72 abuts against the main upper beam 22.

[0077] In summary, for the car frame 100 of the present application, a car frame top support structure formed by the connection between four main and auxiliary diagonal braces 50 and the main gantry 20 and the auxiliary gantry 30 is used to support the top of the car frame 100; a car frame bottom support structure formed by the connection between four main and auxiliary support frames 60 and the main gantry 20 and the auxiliary gantry 30 is used to support the bottom of the car frame 100; the abutment between the support beam 70 and the main upper beam 22 and the main and auxiliary connecting beams 40 is used to assist the power transmission between the main gantry 20 and the main and auxiliary connecting beams 40; at least four sets of diagonal brace assemblies 80 are used to connect the main and auxiliary connecting beams 40 and the car bottom platform 10. In this way, the overall stiffness and stability of the car frame 100 can be improved, so that the car frame 100 can prevent the overall sinking of the car frame 100 caused by excessive load during the normal loading and unloading process and the emergency braking process.

[0078] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as within the scope described in this specification.

[0079] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as appropriate changes and variations are made to the above embodiments within the scope of the essential spirit of the present invention, they all fall within the scope of protection required by the present invention.

Claims

1. A car frame for a heavy-duty freight elevator, characterized in that: The car frame (100) comprises: A car bottom platform (10) for carrying goods; A main gantry (20) connected to the car bottom platform (10) and used for supporting the car bottom platform (10); Two auxiliary gantries (30) are arranged on both sides of the main gantries (20) in the horizontal direction and are respectively connected to the car bottom platform (10) to support the car bottom platform (10); A main and a secondary connecting beam (40) are arranged above the car bottom platform (10) in the vertical direction, and the main and the secondary connecting beams (40) are respectively connected to the main gantry (20) and the secondary gantry (30); The main and auxiliary inclined brackets (50) are arranged above the car bottom platform (10) in the vertical direction, and the main and auxiliary inclined brackets (50) are respectively connected to the main gantry (20) and the auxiliary gantry (30); Wherein, an acute angle is formed between the length direction of the main and auxiliary inclined brackets (50) and the length direction of the main and auxiliary connecting beams (40).

2. The car frame of the heavy-duty freight elevator according to claim 1, characterized in that: Two of the main and auxiliary inclined brackets (50) are respectively connected between each of the auxiliary gantry (30) and the main gantry (20); The two main and auxiliary inclined brackets (50) located on the same side are symmetrically arranged with the main straight beam (21) on the main gantry (20) as the symmetry axis to form an isosceles triangle car frame top support structure.

3. The car frame of the heavy-duty freight elevator according to claim 2, characterized in that: The main gantry (20) further comprises a main upper beam (22), the main and auxiliary connecting beams (40) are attached to the main straight beam (21) and connected to the main straight beam (21), and the main upper beam (22) is fixedly connected to one end of the main straight beam (21) extending upward from the main and auxiliary connecting beams (40) in the vertical direction; The car frame (100) further comprises a support beam (70), wherein the support beam (70) is arranged between the main and auxiliary connecting beams (40) and the main upper beam (22), the upper and lower end surfaces of the support beam (70) are respectively abutted against the main upper beam (22) and the main and auxiliary connecting beams (40), and the outer side surface of the support beam (70) is abutted against the main straight beam (21).

4. The car frame of the heavy-duty freight elevator according to claim 3, characterized in that: The car frame (100) also includes a first vertical plate (51), the first vertical plate (51) includes a first plate body (511) and a second plate body (512), the first plate body (511) is abutted against a first side groove (222) of the main upper beam (22) and connected to the main upper beam (22), and the second plate body (512) is arranged in the vertical extension direction of the support beam (70), one end of the main and auxiliary inclined brackets (50) is abutted against the second plate body (512) and connected to the second plate body (512), and the other end of the main and auxiliary inclined brackets (50) is connected to the second vertical plate (52) of the second side groove (322) of the auxiliary upper beam (32) in the auxiliary gantry (30).

5. The car frame of the heavy-duty freight elevator according to claim 2, characterized in that: Two main and auxiliary support frames (60) are respectively connected between each auxiliary gantry (30) and the main gantry (20), and the main and auxiliary support frames (60) are arranged below the car bottom platform (10) in the vertical direction; The two main and auxiliary support frames (60) located on the same side are symmetrically arranged with the main straight beam (21) on the main gantry (20) as the symmetry axis to form an inverted triangle car frame bottom support structure, and the car frame bottom support structure and the car frame top support structure are located on the same plane.

6. The car frame of the heavy-duty freight elevator according to claim 5, characterized in that: The thickness of the main lower beam (23) on the main gantry (20) is greater than the thickness of the secondary lower beam (33) on the secondary gantry (30); One end of the main and auxiliary support frames (60) is mounted on the third vertical plate (61) of the third side groove (233) of the main lower beam (23), and the other end of the main and auxiliary support frames (60) is mounted on the fourth vertical plate (62) of the fourth side groove (332) of the auxiliary lower beam (33).

7. The car frame of the heavy-duty freight elevator according to claim 6, characterized in that: The main lower beam (23) comprises a main lower beam upper portion (234) and a main lower beam lower portion (235) which are independent of each other, and the main lower beam lower portion (235) is arranged below the main lower beam upper portion (234) in the vertical direction and is connected to the main lower beam upper portion (234); Wherein, the third vertical plate (61) is fixedly mounted on the lower portion (235) of the main lower beam.

8. The car frame of the heavy-duty freight elevator according to claim 7, characterized in that: At least one of the main lower beam upper portion (234) and the main lower beam lower portion (235) comprises a first side wall (2351) and a second side wall (2352) which are symmetrically arranged, the first side wall (2351) and the second side wall (2352) being connected by a plurality of C-shaped reinforcing ribs (2353), and two adjacent C-shaped reinforcing ribs (2353) among the plurality of C-shaped reinforcing ribs (2353) being arranged opposite to each other; The bottom of the first side wall (2351) and the bottom of the second side wall (2352) are connected by a hollow plate (2354).

9. The car frame of the heavy-duty freight elevator according to claim 1, characterized in that: The car frame (100) further comprises at least four groups of inclined bracket assemblies (80), wherein the at least four groups of inclined bracket assemblies (80) are respectively connected to the main and auxiliary connecting beams (40) and the car bottom platform (10) to form an inclined support structure of the car bottom platform (10); At least four groups of the inclined bracket components (80) are symmetrically arranged in the front-rear direction of the car frame (100), and at least four groups of the inclined bracket components (80) are symmetrically arranged in the left-right direction of the car frame (100) relative to the main gantry (20).

10. The car frame of the heavy-duty freight elevator according to claim 9, characterized in that: The inclined support frame assembly (80) comprises two inclined support rod bodies (81), and the two inclined support rod bodies (81) are arranged on the left and right sides of the corresponding auxiliary straight beam (31) on the auxiliary gantry (30); One end of the inclined rod body (81) is connected to the main and auxiliary connecting beams (40), and the other end of the inclined rod body (81) is connected to the car bottom platform (10) via a connecting assembly (82).

11. The car frame of the heavy-duty freight elevator according to claim 10, characterized in that: The connecting assembly (82) comprises a connecting seat (821) and a connecting screw (822), wherein the connecting seat (821) is fixedly connected to the car bottom platform (10), the connecting screw (822) passes through the connecting seat (821) and is screwed to the connecting seat (821), and one end of the connecting screw (822) away from the connecting seat (821) is inserted into the inclined rod body (81) and is screwed to the inclined rod body (81).

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