A hidden car bottom weighting structure

Abstract

The present invention discloses a hidden car bottom weighting structure, which relates to the technical field of elevators and aims to solve the counterweight problem of elevator cars. The key points of the technical solution are: it includes a base and several groups of counterweight components, the two opposite sides of the base are connected with ribs, the counterweight components include a counterweight piece and a connecting cover, the connecting cover is a long strip with a "J"-shaped cross section, and connecting edges for connecting with the base are formed on both sides; the connecting cover is arranged on the base, and a receiving groove is formed between the base, and the counterweight piece is embedded in the receiving groove. The present invention covers the counterweight block by using a connecting cover, and the counterweight block is hidden while strengthening the surface strength of the car bottom and increasing the weight of the car bottom. On the basis of the original car bottom structure, the bending width of the reinforcing ribs is increased, which is convenient to manufacture and does not affect the original appearance.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and more particularly to a hidden car floor weighting structure and an installation method of the hidden car floor weighting structure. Background Art

[0002] From the perspective of elevator design and use, the larger the car load, the heavier the car itself needs to be. In addition, in order to ensure the comfort and stability of the elevator operation, it is required to lower the center of gravity of the car, that is, the weight of the car bottom needs to be increased.

[0003] At present, some elevator design manufacturers are very crude in directly hanging balance blocks on the bottom of the car, or directly welding frames on the bottom of the car, placing weight blocks in the frame to increase the weight of the bottom of the car, and the weight blocks are almost completely exposed. There are some problems with these methods. First of all, the appearance is very unsightly, forming a large protrusion in the spatial structure, which has a certain inconvenience on installation and construction. Moreover, the weight blocks currently used are usually three types: wet sand mold, dry sand mold, and chemical hardening sand mold. After a certain number of years of use, the weight blocks will become powdery and dust pollution will occur, affecting the elevator riding environment and the health of users.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] The object of the present invention is to solve the above-mentioned problem and provide a hidden car bottom weighting structure, which can realize stable weighting of the car bottom, cover the counterweight block, and reduce dust pollution caused by powdering and escaping of the weight block.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: a hidden car bottom weighting structure, including a base and several groups of counterweight assemblies, the opposite sides of the base are connected with ribs, the counterweight assembly includes a counterweight piece and a connecting cover, the connecting cover is a long strip with a "J"-shaped cross-section, and connecting edges are formed on both sides for connecting to the base; the connecting cover is arranged on the base, and a receiving groove is formed between the base, and the counterweight piece is embedded in the receiving groove.

[0007] The present invention is further configured such that the two ends of the connecting cover are respectively oriented toward the ribs on both sides and are limited by the ribs; the upper edge of the ribs is bent toward the middle of the base to form a bending edge, and a limiting groove is formed between the bending edge and the base; the two ends of the connecting cover are embedded in the limiting grooves on both sides of the base.

[0008] The present invention is further configured such that the height of the limiting groove is slightly greater than the height of the connecting cover, and the height of the positioning groove in the connecting cover is slightly greater than the height of the counterweight.

[0009] The present invention is further configured such that the connecting edges on both sides of the connecting cover are fixed to the base by rivetless riveting.

[0010] The present invention is further configured such that the counterweight components are symmetrically distributed on the upper part of the base, and the center of gravity of each counterweight component is maintained in the middle of the base.

[0011] The present invention is further configured such that the receiving groove of the connecting cover is open toward the connecting section of the connecting cover, the counterweight is in an elongated structure, and its shape is adapted to the receiving groove; the center of gravity of each group of counterweights is located on the central axis of the base.

[0012] The present invention is further configured such that the distances between the two ends of the counterweight and the ribs are consistent.

[0013] The present invention is further configured such that each set of counterweights includes two counterweight blocks, which can be slidably adjusted along the accommodating grooves; the two counterweight blocks are symmetrically distributed about the axis of the base, and the ends of the counterweight blocks are against the ribs.

[0014] The present invention is further configured such that one end of the counterweight block facing the rib presents a pressing arc surface, the diameter of the arc of the pressing arc surface is equal to the distance between the two ribs; and transition arc surfaces are formed on both sides of the pressing arc surface.

[0015] The present invention is further configured such that each set of counterweights also includes a limit block, which is located between two counterweights and is used to press and limit the counterweights; the limit block is a wedge-shaped structure with a larger top and a smaller bottom, and the limit blocks are respectively adapted to the end faces of the counterweights and press against each other.

[0016] The present invention is further configured such that two sides of the limit block are respectively inclined plane 2, and one end of the counterweight block facing the limit block is inclined plane 1, and the inclined plane 1 is against the inclined plane 2.

[0017] The present invention is further configured such that the first inclined surface abuts against the second inclined surface to push the limit block upward to abut against the upper side of the connection cover.

[0018] The present invention is further configured as follows: a filling cavity is opened on the outward side of the second inclined surface, and the filling cavity is filled with a filling capsule; the filling capsule contains a soluble material, and the filling capsule is filled with a connecting material; a pre-embedded rod is fixedly connected to the position of the first inclined surface opposite to the filling cavity, and when the first inclined surface and the second inclined surface are close to each other, the pre-embedded rod is used to pierce the filling capsule and extend into the filling cavity; the first inclined surface and the second inclined surface are connected and fixed to each other by the pre-embedded rod and the connecting material.

[0019] The present invention is further configured such that the height of the limit block is smaller than the height of the accommodating groove, and a gap is formed between the upper end of the limit block and the connecting cover; a screw hole is provided in the middle of the limit block, a screw rod is threadedly connected to the screw hole, a screw head is provided at the upper end of the screw rod, the screw head passes through the upper side wall of the connecting cover, and is rotatably connected to the upper side wall of the connecting cover; the limit block can be pushed downward to adjust and be opposite to the counterweight block by threaded adjustment of the screw rod.

[0020] The present invention is further configured as follows: the upper side wall of the connecting cover is provided with a cylindrical connecting sleeve, the connecting sleeve is passed through from top to bottom and is used to accommodate the screw head of the screw, the upper and lower end positions of the inner circumference of the connecting sleeve are respectively fixedly connected with block one and block two, the block one and block two are used to block and limit the screw head; an inner circumference of the connecting sleeve is provided with an internal thread at a section close to block two, and a threaded section is formed, the outer circumference of the screw head is provided with an external thread matched with the internal thread, and the screw head can be rotated and adjusted at the internal thread of the screw thread end; a section of the inner circumference of the connecting sleeve is close to block one and has a smooth inner wall, and forms a rotating section, and the screw head can be freely rotated and adjusted in the rotating section.

[0021] The present invention is further configured such that the length of the screw is adapted to the height of the accommodating groove, the lower end of the screw forms a pressing end, the screw head thread is adjusted into the threaded section, the pressing end of the lower end of the screw presses against the upper part of the base to form a rotating support point of the counterweight assembly; the screw head is adjusted upward into the rotating section, and the pressing end of the lower end of the screw is separated from the upper part of the base.

[0022] The present invention is further configured such that the screw head is rotated and adjusted within the rotating section, and the screw rod and the screw hole in the limit block are threadedly matched with each other, which can drive the limit block to be adjusted downward, and the two sides of the limit block are respectively against the counterweight block to achieve pressure limiting.

[0023] The present invention also provides an installation method of a hidden car platform weighting structure, which is used for installing the hidden car platform weighting structure.

[0024] In summary, the present invention has the following beneficial effects:

[0025] The counterweight block can be covered by using a "J"-shaped connection cover to accommodate the counterweight block; after the counterweight block is powdered for a long time, it will not escape and cause dust pollution. The ribs on both sides of the base are used to block and strengthen, and the two ends of the connection cover can be blocked to improve the blocking rate of the outer periphery of the counterweight block, and the position stability of the counterweight assembly can be maintained, the structural strength of the car bottom can be increased, and the counterweight structure of the car bottom can be hidden. The structure is reasonable, simple and reliable.

[0026] By adopting a mutually embedded installation structure between the counterweight assembly and the base, the installation stability of the counterweight assembly can be ensured, and the weight balance of the counterweight assembly can be improved, the counterweight stability of the car bottom can be improved, and the overall balance of the car can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A partial cross-sectional view of a hidden car floor weighting structure in Example 1.

[0028] Figure 2 A cross-sectional view of a hidden car floor weighting structure in Example 1 Figure 1 ;

[0029] Figure 3 A cross-sectional view of a hidden car floor weighting structure in Example 1 Figure 2 ;

[0030] Figure 4 A top view of a hidden car floor weighting structure in Embodiment 3;

[0031] Figure 5 It is a cross-sectional view of a hidden car floor weighting structure in Embodiment 3;

[0032] Figure 6 Schematic diagram of the adjustment state of a hidden car floor weighting structure in Example 3 Figure 1 ;

[0033] Figure 7 Schematic diagram of the adjustment state of a hidden car floor weighting structure in Example 3 Figure 2 ;

[0034] Figure 8 Schematic diagram of the adjustment state of a hidden car floor weighting structure in Example 3 Figure 3 ;

[0035] Fig. 9 It is a cross-sectional view of a hidden car floor weighting structure in Embodiment 4;

[0036] Fig.10 This is a schematic diagram of the structure of the filling bag of the limiting block in the fourth embodiment;

[0037] Fig.11 It is a structural schematic diagram of the limit block in the fourth embodiment;

[0038] Fig.12 Schematic diagram of the adjustment state of the limit block and the screw in the second embodiment Figure 1 ;

[0039] Fig.13 This is a schematic diagram of the connection structure between the connecting sleeve and the screw in the second embodiment;

[0040] Fig.14 Schematic diagram of the adjustment state of the limit block and the screw in the second embodiment Figure 2 ;

[0041] Fig.15 Schematic diagram of the adjustment state of the limit block and the screw in the second embodiment Figure 3 .

[0042] Figure markings: 1. base; 2. rib; 21. bending edge; 22. limiting groove; 3. connecting cover; 31. connecting edge; 32. rivet point; 33. accommodating groove; 4. counterweight; 41. counterweight block; 4101. pressing arc surface; 4102. transition arc surface; 42. limiting block; 421. filling cavity; 422. filling capsule; 423. embedded rod; 424. screw hole; 43. inclined plane one; 44. inclined plane two; 5. screw rod; 51. screw head; 52. pressing end; 53. external thread; 6. connecting sleeve; 61. block one; 62. block two; 63. threaded section; 64. rotating section. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Embodiment 1

[0045] The present embodiment discloses a hidden car floor weighting structure, which is used to be installed at the bottom of an elevator car. The weight of the bottom of the elevator car can be increased by counterweighting, thereby lowering the overall center of gravity of the car, and thereby increasing the stability of the elevator car during operation.

[0046] like Figure 1-3 As shown, the car bottom weighting structure includes a base 1 and several groups of counterweight assemblies, each of which is evenly installed on the base 1, and the center of gravity of the counterweight assembly is kept at the center of the base 1, and the centers of gravity of the two are kept basically coincident, which is conducive to the stability after weighting. Taking the car of an ordinary elevator as an example, two groups of counterweight assemblies are generally installed, and the two groups of counterweight assemblies are symmetrically distributed on the upper part of the base 1, and the center of gravity of each counterweight assembly is kept at the middle of the base 1.

[0047] Ribs 2 are fixedly connected to the two opposite sides of the base 1, and the ribs 2 extend upward to form a side plate-like structure. The weight assembly includes a counterweight 4 and a connection cover 3. The connection cover 3 is a long strip with a "J"-shaped cross section, and connection edges 31 are formed on both sides. The connection edges 31 are connected and fixed to the base 1, and the two can be fixedly connected. The fixed connection method can be anchor riveting, welding or rivetless riveting.

[0048] like Figure 3 As shown, the connection cover 3 is covered on the base 1, and a long strip-shaped receiving groove 33 is formed between the lower side of the "J"-shaped connection cover 3 and the base 1. The counterweight 4 is in the shape of a long strip structure that matches the shape and size of the receiving groove 33, is embedded in the receiving groove 33, is covered by the connection cover 3, and can be fixed and limited on the upper part of the base 1. The two ends of the connection cover 3 are respectively facing the ribs 2 on both sides, and are blocked and limited by the ribs 2, so that the stability of the connection cover 3 can be maintained, and the open positions at both ends of the receiving groove 33 are blocked by the ribs 2.

[0049] The counterweight 4 can be covered inside by connecting the cover 3 to cover the surface of the counterweight 4, thereby preventing the counterweight 4 from scattering after being pulverized and reducing dust pollution.

[0050] like Figure 2 As shown, the rib 2 is an inverted "L"-shaped structure, and the ribs 2 on both sides are symmetrical to each other; the upper edge of the rib 2 is bent toward the middle of the base 1 to form a bending edge 21, and a limiting groove 22 is formed between the bending edge 21 and the base 1. The two ends of the connecting cover 3 are embedded in the limiting grooves 22 on both sides of the base 1, so that the open ends of the connecting cover 3 can be embedded in the limiting grooves 22, which can form a blocking limit for the two ends of the accommodating groove 33, and maintain the overall structural stability of the counterweight assembly. The length of the connecting cover 3 is shorter than the distance between the two ribs 2, forming a certain length gap, which is convenient for installing the connecting cover 3 into the limiting grooves 22 on both sides.

[0051] In order to facilitate the installation of the counterweight assembly, the height of the limit groove 22 is slightly greater than the height of the connecting cover 3, forming a height difference of 0.1-0.5 cm; the height of the inner groove 33 of the connecting cover 3 is slightly greater than the height of the counterweight 4, forming a height difference of 0.1-0.5 cm, which is convenient for the installation and arrangement of the counterweight assembly.

[0052] Embodiment 2

[0053] This embodiment discloses a hidden car floor weighting structure, which is described based on the first embodiment. Figure 1-3 As shown, the receiving groove 33 of the connecting cover 3 is open toward the connecting section of the connecting cover 3. Since the openings at both ends of the connecting cover 3 are close to the ribs 2, the dispersion caused by powdering is reduced.

[0054] The counterweight 4 is in the form of a long strip, and its shape matches the receiving groove 33. The positions of the counterweight 4 are symmetrical, and the center of gravity is located on the central axis of the base 1. The length of the counterweight 4 is slightly shorter than the distance between the two ribs 2, and the distance between the two ends of the counterweight 4 and the ribs 2 is kept consistent, so that the center of gravity of the counterweight 4 on the base 1 is on the axis, and the overall center of gravity of the two sets of counterweights 4 is located in the middle of the base 1, which can maintain the stability of the weighted structure.

[0055] Embodiment 3

[0056] This embodiment discloses a hidden car floor weighting structure, which is described based on the first embodiment with reference to 4-8.

[0057] Since the length of the counterweight 4 is shorter than the distance between the two ribs 2, a certain gap will be formed between the counterweight 4 and the ribs 2 after installation. To ensure the stability of the left and right sides of the counterweight 4, the spacing between the two sides needs to be controlled to be consistent. However, when the counterweight assembly is embedded in the limit groove 22 and moved and adjusted, it is difficult to maintain the center of the counterweight 4, which will produce a large offset, resulting in the offset of the center of gravity of the counterweight assembly.

[0058] In this embodiment, each set of counterweights 4 includes two counterweights 41, forming a combined structure, and the two counterweights 41 are symmetrically arranged about the axis of the base 1. The cross-sectional profile of the counterweight 4 is adapted to the size of the receiving groove 33, and the counterweight 41 can slide and adjust in the receiving groove 33.

[0059] The sum of the lengths of the two counterweights 41 is shorter than the spacing between the two ribs 2, and the ends of the counterweights 41 abut against the ribs 2, forming a gap between the two counterweights 41. The counterweights 41 and the ribs 2 abut against each other, thereby achieving weight balance of the counterweights 41 on both sides.

[0060] This embodiment also discloses a method for installing a hidden car floor weighting structure, which adopts the hidden car floor weighting structure in the above embodiment.

[0061] During the installation process, firstly, the two counterweight blocks 41 are placed obliquely between the two ribs 2, and the connecting cover 3 is placed on the two counterweight blocks 41 to achieve the cover. Figure 6 In addition, the connection cover 3 is also tilted, and the ends of the two counterweights 41 extend out from the openings on both sides of the connection groove. By adjusting the tilt and rotation of the connection cover 3, the ends of the counterweights 41 are against the ribs 2, as shown in FIG. Figure 7 During the rotation adjustment process, the end of the counterweight 41 and the rib 2 are pressed against each other, and the counterweight 41 is pushed by the pressing force to slide and adjust in the receiving groove 33 of the connecting cover 3, and move closer to each other until the counterweight 41 inside the connecting cover 3 is adjusted to a horizontal state, as shown in FIG. Figure 4Then, after adjusting the entire counterweight assembly in the front-to-back direction and fixing the connecting edge 31 at the corresponding position of the base 1, the center of gravity of the counterweight assembly can be balanced.

[0062] After rotation adjustment, the end of the counterweight block 41 can press against the rib 2 to position the two counterweight blocks 41 , thereby ensuring the left-right balance of the counterweight block 41 .

[0063] Furthermore, the end of the counterweight 41 facing the rib 2 is in the form of a pressing camber 4101, and the pressing camber 4101 and the rib 2 are pressed against each other, thereby maintaining the stability during the rotation adjustment and the pressing and pushing process. Moreover, the diameter of the arc of the pressing camber 4101 is equal to the spacing between the two ribs 2. When the counterweight 41 is rotated to a certain angle, the pressing camber 4101 on both sides respectively press against the ribs 2 on both sides, thereby achieving a uniform and stable effect during the rotation adjustment process. Transition camber 4102 is formed on both sides of the pressing camber 4101, and the smoothness of the counterweight 41 during the rotation adjustment process can be increased through the transition camber 4102.

[0064] Moreover, in the case of adjustment to solve the horizontal Figure 8 As shown, the arcs on both sides press against the ribs 2. The two counterweights 41 can be swung without telescopic adjustment under the action of the pressing arc surface 4101, so as to facilitate the micro-adjustment of the installation angle of the whole counterweight assembly, and ensure that the counterweights 41 and the ribs 2 are always pressed during the swing adjustment process to determine the left and right positions of the two counterweights 41.

[0065] Embodiment 4

[0066] This embodiment discloses a hidden car floor weighting structure. Fig. 9 , 10 Provide further explanation.

[0067] Each set of counterweights 4 also includes a limit block 42, which is located between the two counterweights 41. The limit block 42 is pressed against the counterweights 41 on both sides to limit the position, so that the two counterweights 41 and the limit block 42 can be pressed and fixed. The limit block 42 is a wedge-shaped structure with a larger upper portion and a smaller lower portion, and the limit blocks 42 are respectively adapted to the end faces of the counterweights 4 and press against each other.

[0068] like Fig. 9As shown, there are inclined planes 44 on both sides of the limit block 42, and an end of the counterweight block 41 facing the limit block 42 is inclined plane 1 43, and the inclined planes 43 and 44 are parallel and adapted to each other. When assembled, the inclined planes 43 and 44 abut against each other. The limit block 42 can be pushed upward to abut against the upper side of the connection cover 3 by the abutment of the inclined planes 1 43 and 44; and the inclined planes 1 43 and 44 are in an inclined state, and during the abutment process, not only can the counterweight block 41 be pushed outward to keep the counterweight block 41 against the rib 2, and keep the left and right gravity balance stable, but also can generate downward pressure on the counterweight block 41 to ensure stability after installation and positioning.

[0069] Furthermore, the structure of the limit block 42 can be further optimized, such as Fig.10 As shown. A filling cavity 421 is opened on the outward side of the second inclined surface 44, and a filling capsule 422 is filled in the filling cavity 421. The filling capsule 422 contains a soluble material, such as a fabric made of a soluble fiber material, or a soluble paper, which can be dissolved. The connecting material filled in the filling capsule 422 is an uncured concrete material. After a period of time, the moisture in the connecting material will dissolve and break the outer shell of the filling capsule 422, and then the gap of the counterweight block 41 can be filled and connected through the connecting material to achieve the fixation of the two counterweight blocks 41.

[0070] Specifically, an embedded rod 423 may be fixedly connected at a position where the inclined surface 1 43 and the filling cavity 421 are opposite, and the embedded part faces the filling capsule 422. When the inclined surface 1 43 and the inclined surface 2 44 are close to each other, the tip of the embedded rod 423 may pierce the filling capsule 422 and extend into the filling cavity 421. After the connection material is solidified, the inclined surface 1 43 and the inclined surface 2 44 are connected and fixed to each other through the embedded rod 423 and the connection material, so that the counterweight block 41 and the limit block 42 on both sides are fixedly connected.

[0071] This embodiment also discloses a method for installing a hidden car floor weighting structure, which is specifically installed according to the structure in this embodiment. A limit block 42 is pre-installed between two counterweight blocks 41 to achieve a pressing limit between the counterweight block 41 and the limit block 42 during the installation process.

[0072] Embodiment 5

[0073] This embodiment discloses a hidden car floor weighting structure. Fig.11 To further illustrate, the structure of the limit block 42 is further improved and designed.

[0074] The height of the limit block 42 is smaller than the height of the accommodating groove 33, and gaps are formed between the upper and lower ends of the limit block 42 and the connecting cover 3; the limit block 42 adopts a structure that can be adjusted up and down, and the pressing force between the limit block 42 and the counterweight block 41 can be adjusted, thereby realizing active adjustment and tightening.

[0075] Specific as Fig.11 As shown, a screw hole 424 is provided in the middle of the limit block 42, and a screw rod 5 is connected to the inner thread of the screw hole 424, and a screw head 51 is provided at the upper end of the screw rod 5. The screw head 51 passes upward through the upper side wall of the connection cover 3 and is rotatably connected to the upper side wall of the connection cover 3. The rotation limit can be achieved through the hole between the screw head 51 and the upper side wall and the annular groove structure on the outer periphery of the screw head 51, and a connecting sleeve 6 can also be installed on the upper side wall for rotation support. The limit block 42 can be pushed downward by adjusting the screw rod 5, and can be pressed against the counterweight block 41, and the counterweight block 41 can be stretched to both sides to ensure that the counterweight block 41 and the rib 2 are pressed against each other, and the weight balance of the counterweight blocks 41 on the left and right sides is ensured.

[0076] This embodiment also discloses a method for installing a hidden car floor weighting structure, which is specifically installed according to the structure in this embodiment. A limit block 42 is pre-installed between two counterweight blocks 41 to achieve a pressing limit between the counterweight block 41 and the limit block 42 during the installation process.

[0077] Before the counterweight assembly is rotated and adjusted, the position of the limit block 42 is relatively high; when the rotating counterweight assembly is rotated and adjusted to the horizontal state, the limit block 42 can be adjusted downward by the threaded adjustment screw rod 5 through the threaded linkage between the screw rod 5 and the limit block 42. After the limit block 42 is adjusted downward, it will press the counterweight block 41 on both sides to ensure that the counterweight block 41 and the rib 2 press against each other, ensuring that the weight of the counterweight blocks 41 on the left and right sides is balanced.

[0078] Embodiment 6

[0079] This embodiment discloses a hidden car floor weighting structure. Figure 12-15 To further explain, the structure between the screw head 51 of the screw rod 5 and the upper side wall of the connecting cover 3 is further improved and designed.

[0080] like Fig.13 As shown, a cylindrical connecting sleeve 6 is fixedly formed on the upper side wall of the connecting cover 3, and the connecting sleeve 6 is passed through from top to bottom. The screw head 51 of the screw rod 5 can be accommodated through the connecting sleeve 6, and the axial rotation adjustment of the screw head 51 can be realized. The upper and lower ends of the inner circumference of the connecting sleeve are respectively fixedly connected with a stopper 61 and a stopper 62, and the stopper 61 and the stopper 62 can block and limit the screw head 51 at both ends, so as to limit the upper and lower axial positions of the screw rod 5.

[0081] like Fig.13As shown, an internal thread is provided at a section of the inner circumference of the connecting sleeve 6 near the second stopper 62, and a thread section 63 is formed, and an external thread 53 is formed on the outer circumference of the screw head 51, which can be adapted to the internal thread. The screw head 51 can be rotated and adjusted at the internal thread end, and the screw 5 can be adjusted up and down during the thread adjustment process. A section of the inner circumference of the connecting sleeve 6 near the first stopper 61 is a smooth inner wall, and a rotating section 64 is formed here, and the screw head 51 can be freely rotated and adjusted in the rotating section 64. Therefore, the thread adjustment can be performed in the connecting sleeve 6 through adjustment, and the rotation adjustment can be achieved.

[0082] like Fig.12 , 14 As shown in FIG. 15 , the length of the screw rod 5 is adapted to the height of the receiving groove 33 , and the lower end of the screw rod 5 forms a pressing end 52 . By adjusting the height position of the screw rod 5 , the pressing end 52 of the screw rod 5 can be adjusted to achieve the switching between pressing and separating with the base 1 .

[0083] like Fig.14 As shown, the screw head 51 is threadedly adjusted into the threaded section 63, and the pressing end 52 at the lower end of the screw rod 5 can press against the upper part of the base 1, so that the connecting cover 3 can be slightly propped up at the position of the pressing end 52 to form a rotation support point for the counterweight assembly, which can improve the smoothness of the rotation adjustment process.

[0084] like Fig.12 , 15 As shown, when the screw head 51 is rotated and adjusted to the rotating section 64, the pressing end 52 at the lower end of the screw rod 5 is separated from the base 1. Then, the screw rod 5 is continued to be rotated and adjusted, and the screw head 51 is rotated and adjusted in the rotating section 64, and the height of the screw rod 5 does not change. The screw holes 424 in the screw rod 5 and the limit block 42 are threadedly matched with each other, which can drive the limit block 42 to adjust downward, and the two sides of the limit block 42 are respectively against the counterweight block 41 to achieve the pressing limit. The counterweight block 41 is spread to both sides by the limit block 42 to ensure that the counterweight block 41 and the rib 2 are pressed against each other, and the weight of the counterweight blocks 41 on the left and right sides is balanced.

[0085] This embodiment also discloses a method for installing a hidden car floor weighting structure, which is specifically installed according to the structure in this embodiment.

[0086] Before the counterweight assembly is rotated and adjusted, the screw rod 5 is threadedly adjusted in advance, and the position of the screw head 51 of the screw rod 5 is rotated and adjusted to the position of the threaded section 63 of the connecting sleeve 6, such as Fig.14 As shown, the lower end of the screw rod 5 abuts against the base 1, which can slightly prop up the connecting cover 3 at the position of the pressing end 52 to form a rotation support point for the counterweight assembly, and the counterweight assembly as a whole can be rotated and adjusted until the counterweight assembly is in a horizontal state.

[0087] Then, the screw head 51 is rotated and adjusted to adjust the position of the screw head 51 within the rotating section 64, and the pressing end 52 at the lower end of the screw rod 5 is separated from the base 1. Fig.12 shown.

[0088] Then, the screw rod 5 is rotated and adjusted, and the screw head 51 is rotated and adjusted in the rotating section 64, and the height of the screw rod 5 does not change. The screw rod 5 and the screw hole 424 in the limit block 42 are threadedly matched with each other, which can drive the limit block 42 to adjust downward, and the two sides of the limit block 42 are respectively against the counterweight block 41 to achieve the pressure limit. Fig.15 The counterweight block 41 is spread out to both sides by the limit block 42 to ensure that the counterweight block 41 and the rib 2 are pressed against each other, and the weight of the counterweight blocks 41 on the left and right sides is balanced.

[0089] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A hidden car bottom weighting structure, comprising a base (1) and a plurality of counterweight components, characterized in that: Ribs (2) are connected to opposite sides of the base (1); the counterweight assembly comprises a counterweight member (4) and a connecting cover (3); the connecting cover (3) is a long strip with a "J"-shaped cross section, and connecting edges (31) for connecting to the base (1) are formed on both sides; the connecting cover (3) is arranged on the base (1) and forms a receiving groove (33) between the connecting cover and the base (1); the counterweight member (4) is embedded in the receiving groove (33); The two ends of the connection cover (3) are respectively oriented toward the ribs (2) on both sides and are blocked and limited by the ribs (2); the upper edge of the ribs (2) is bent toward the middle of the base (1) to form a bending edge (21); a limiting groove (22) is formed between the bending edge (21) and the base (1); the two ends of the connection cover (3) are embedded in the limiting grooves (22) on both sides of the base (1); Two inclined planes (44) are respectively formed on both sides of the limit block (42), and one end of the counterweight block (41) facing the limit block (42) is formed with a first inclined plane (43). The first inclined plane (43) and the second inclined plane (44) are parallel and matched with each other. During assembly, the first inclined plane (43) and the second inclined plane (44) are abutted against each other. Through the abutment between the first inclined plane (43) and the second inclined plane (44), the limit block (42) can be pushed upward to abut against the upper side of the connecting cover (3). The first inclined plane (43) and the second inclined plane (44) are in an inclined state. During the abutment process, the counterweight block (41) can be pushed outward to keep the counterweight block (41) against the rib (2), keep the left and right gravity balance stable, generate downward pressure on the counterweight block (41), and ensure stability after installation and positioning.

2. A hidden car floor weighting structure according to claim 1, characterized in that: The height of the limiting groove (22) is slightly greater than the height of the connecting cover (3), and the height of the inner receiving groove (33) of the connecting cover (3) is slightly greater than the height of the counterweight (4).

3. A hidden car floor weighting structure according to claim 1, characterized in that: The connecting edges (31) on both sides of the connecting cover (3) are fixed to the base (1) by rivetless riveting.

4. A hidden car floor weighting structure according to claim 1, characterized in that: The counterweight components are symmetrically distributed on the upper part of the base (1), and the center of gravity of each counterweight component is maintained in the middle of the base (1).

5. A hidden car floor weighting structure according to claim 4, characterized in that: The receiving groove (33) of the connecting cover (3) is open toward the connecting section of the connecting cover (3); the counterweight (4) is in the form of an elongated strip and its shape is adapted to the receiving groove (33); the center of gravity of each group of counterweights (4) is located on the central axis of the base (1).

6. A hidden car floor weighting structure according to claim 5, characterized in that: The distances between the two ends of the counterweight (4) and the ribs (2) are consistent.

7. The hidden car floor weighting structure according to claim 5, characterized in that: Each group of counterweights (4) comprises two counterweight blocks (41), and the counterweight blocks (41) can be slidably adjusted along the receiving groove (33); the two counterweight blocks (41) are symmetrically distributed about the axis of the base (1), and the ends of the counterweight blocks (41) are against the ribs (2).

8. A hidden car floor weighting structure according to claim 7, characterized in that: One end of the counterweight block (41) facing the rib (2) is in the form of a pressing arc surface (4101), the diameter of the arc of the pressing arc surface (4101) being equal to the distance between the two ribs (2); transition arc surfaces (4102) are formed on both sides of the pressing arc surface (4101).

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