Connecting Structure between Cross Beam and Longitudinal Beam of a Hoisting Device

Abstract

The present invention provides a connection structure between a cross beam and a longitudinal beam of a hoisting device, which includes a cross beam and two longitudinal beams. The two ends of the cross beam are respectively connected to the longitudinal beams through hanging brackets; the longitudinal beam includes a U-shaped track groove, a longitudinal slide rail is fixed in the track groove, a longitudinal slide seat is arranged on the longitudinal slide rail, and a toothed belt Ⅰ is arranged in the track groove along the length direction of the track groove; the hanging bracket includes an L-shaped main hanging plate arranged at the end of the cross beam, and a support hanging plate, an auxiliary wheel hanging plate and a power installation hanging plate are fixed on the main hanging plate. This connection structure is reasonably and reliably connected. When the cross beam moves along the longitudinal beam, it is stable and does not get stuck. The installation volume is small, and it can meet the installation requirements of small spaces.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical equipment, and in particular to a connection structure between a crossbeam and a longitudinal beam of a hoisting device. Background Art

[0002] The cryogenic biological sample bank is an important basic equipment for current research in the medical and biological fields. Through the cryogenic storage of liquid nitrogen, biological tissues such as blood, stem cells and immune cells can remain active for a long time. When preserving biological samples, the sample cryopreservation disk is usually placed on a multi-layer cryopreservation rack and then placed in a liquid nitrogen tank. When taking the frozen samples, it is necessary to manually rotate the tray inside the liquid nitrogen tank, rotate the cryopreservation rack of the target cryopreservation to the opening of the liquid nitrogen tank, manually lift the cryopreservation rack, take out the cryopreservation disk on a certain layer of the cryopreservation rack, and finally select the target cryopreservation tube on the cryopreservation disk. Because the cryopreservation rack is generally high and heavy after the cryopreservation disk is placed, manual operation is very difficult, the operation efficiency is very low, and the lack of stability can easily damage the sample; at the same time, the internal temperature of the liquid nitrogen tank can reach as low as -196°C, and manual operation poses a great safety hazard to the operator. For this purpose, a liquid nitrogen tank freezing rack lifting device is designed to realize the mechanized extraction of the liquid nitrogen storage tank freezing rack in the entire biological sample storage room. The lifting device includes a longitudinal longitudinal beam and a cross beam that moves along the longitudinal beam. The two ends of the cross beam are connected to the longitudinal beam. In addition, due to the small installation space, the connection mechanism between the cross beam and the longitudinal beam needs to be light in structure, small in size, and must not be stuck during operation after connection. For this reason, we have developed a new connection structure between the cross beam and the longitudinal beam, and now apply for a patent for protection. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a connection structure between the crossbeam and the longitudinal beam of a lifting device. The connection structure is reasonable and reliable, the crossbeam moves smoothly along the longitudinal beam without getting stuck, the installation volume is small, and can meet the installation requirements of small spaces.

[0004] To achieve the above object, the present invention adopts the following technical solution: A connection structure between a cross beam and a longitudinal beam of a hoisting device, comprising a cross beam and two longitudinal beams, and both ends of the cross beam are respectively connected to the longitudinal beams through hanging brackets; the longitudinal beam includes a U-shaped track groove, a longitudinal slide rail is fixed in the track groove, a longitudinal slide seat is arranged on the longitudinal slide rail, and a toothed belt Ⅰ is arranged in the track groove along the length direction of the track groove; the hanging bracket includes an L-shaped main hanging plate arranged at the end of the cross beam, a support hanging plate, an auxiliary wheel hanging plate and a power installation hanging plate are fixed on the main hanging plate, the end of the support hanging plate is a horizontal end surface, and a long strip hole is arranged on the end surface along the length direction of the cross beam, the end surface is pressed on the top of the longitudinal slide seat, and a fixing member passing through the long strip hole on the end surface is arranged on the top of the longitudinal slide seat, and the two fixing members do not fix the end surface on the longitudinal slide seat at the same time, an auxiliary wheel is fixed at the end of the auxiliary wheel hanging plate, and the auxiliary wheel is closely attached to the inner side surface of the track groove close to the cross beam, and a longitudinal movement driving device is fixed on the power installation hanging plate, the longitudinal movement driving device includes a motor fixed on the power installation hanging plate, a driving gear Ⅰ installed at the end of the power installation hanging plate and two auxiliary guide wheels, the output shaft of the motor is connected to the driving gear Ⅰ through a coupling, both ends of the toothed belt Ⅰ are fixed at both ends of the track groove, the two auxiliary guide wheels are arranged on both sides of the driving gear Ⅰ, and the toothed belt Ⅰ sequentially bypasses the auxiliary guide wheels and the driving gear Ⅰ and meshes the toothed belt Ⅰ with the driving gear Ⅰ.

[0005] Further, the auxiliary wheel hanging plate is "n"-shaped, and both ends of the auxiliary wheel hanging plate are respectively connected to the main hanging plate and the auxiliary wheel.

[0006] Further, the horizontal end of the main hanging plate is fixed to the upper surface of the cross beam by bolts, and long strip holes are arranged at the corresponding fixing positions of the main hanging plate along the length direction of the cross beam.

[0007] Further, the support hanging plate and the vertical end of the main hanging plate are connected by bolts, and long strip holes are arranged at the connection positions of both, and the bolts pass through the long strip holes.

[0008] Further, two groups of auxiliary wheels are arranged on the auxiliary wheel hanging plate, and the two groups of auxiliary wheels are symmetrically arranged on both sides of the support hanging plate.

[0009] Further, two longitudinal slide seats are arranged on the longitudinal slide rail, the longitudinal section of the support hanging plate is L-shaped, and the ends are two horizontal end surfaces, long strip holes are arranged on the two end surfaces along the length direction of the cross beam, and the two end surfaces are respectively pressed on the tops of the two longitudinal slide seats.

[0010] Further, a longitudinal track seat is fixed at the bottom of the track groove, and the longitudinal slide rail is fixed on the longitudinal track seat.

[0011] The beneficial effects of the present invention are as follows: The present invention adopts a solution in which the support hanging plates at both ends of the cross beam and the longitudinal sliding seats are not fixed simultaneously to form a rigid connection, so that at least one end of the cross beam retains a certain lateral free movement gap. When the two ends of the cross beam run out of sync, the support hanging plates can move within the range of the long strip holes on the longitudinal sliding seats, preventing the generation of torsional force on the longitudinal sliding seats after forming a rigid connection and avoiding jamming between the longitudinal sliding seats and the longitudinal slide rails; the auxiliary wheel hanging plates and the auxiliary wheels limit the cross beam laterally to a certain extent. When the two ends of the cross beam run out of sync, the auxiliary wheel hanging plates deform within a certain range, ensuring the lateral limit of the cross beam while not forming a rigid connection and causing jamming; the power installation hanging plate drives the driving gear I through the motor to cooperate with the toothed belt I to realize movement along the longitudinal slide rail. The driving structure is compact, occupies little space, and is efficient and reliable. The toothed belt structure enables the two ends of the cross beam to easily maintain synchronous operation and reduces the movement error at both ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a schematic diagram of the cooperation structure of the cross beam and the longitudinal beam of the present invention;

[0014] Figure 2 It is a schematic diagram of the hanging rack structure of the present invention;

[0015] Figure 3 It is a top view of the installation structure of the toothed belt I in the track groove

[0016] Figure 4 It is a schematic diagram of the cooperation structure of the longitudinal sliding seat at the end face.

[0017] Figure 5 It is a schematic diagram of the cooperation structure of the toothed belt I, the driving gear I and the auxiliary guide wheel.

[0018] As shown in the figure: 1. Track groove, 2. Longitudinal slide rail, 3. Longitudinal sliding seat, 4. Cross beam, 6. Hanging rack, 7. Main hanging plate, 8. Support hanging plate, 9. Auxiliary wheel hanging plate, 10. Auxiliary wheel, 11. End face, 12. Longitudinal beam, 13. Power installation hanging plate, 14. Longitudinal track seat, 15. Toothed belt I, 16. Driving gear I, 17. Auxiliary guide wheel. DETAILED DESCRIPTION OF THE INVENTION

[0019] 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.

[0020] like Figures 1 to 5 The connection structure of a crossbeam and a longitudinal beam of a lifting device shown in the figure includes a crossbeam 4 and two longitudinal beams 12. The two ends of the crossbeam 4 are respectively connected to the two longitudinal beams 12 through a hanger 6; the longitudinal beam 12 includes a U-shaped track groove 1, a longitudinal track seat 14 is fixed to the bottom of the track groove 1, a longitudinal slide rail 2 is fixed on the longitudinal track seat 14, a longitudinal slide seat 3 is provided on the longitudinal slide rail 2, and a toothed belt Ⅰ15 is provided in the track groove 1 along the length direction of the track groove 1.

[0021] The bracket 6 includes an L-shaped main hanging plate 7 arranged at the end of the beam 4, and a support hanging plate 8, an auxiliary wheel hanging plate 9 and a power installation hanging plate 13 are fixed on the main hanging plate 7. The end of the support hanging plate 8 is a horizontal end surface 11, and the end surface 11 is provided with a long strip hole arranged along the length direction of the beam 4. The end surface 11 is pressed on the top of the longitudinal slide 3. The top of the longitudinal slide 3 is provided with a fixing piece passing through the long strip hole of the end surface. The two fixing pieces do not fix the end surface to the longitudinal slide 3 at the same time. The fixing piece is preferably a bolt. The end surface 11 at both ends of the beam 4 can be fastened at one end and the other end is only hung on the end surface through the long strip hole and the bolt, or both ends are not fastened, and both ends are hung with bolts through the long strip hole. The bolts play a role in preventing them from falling out.

[0022] An auxiliary wheel 10 is fixed to the end of the auxiliary wheel hanging plate 9. The auxiliary wheel hanging plate 9 is "n"-shaped. The two ends of the auxiliary wheel hanging plate 9 are respectively connected to the main hanging plate 7 and the auxiliary wheel 10. The auxiliary wheel 10 is close to the inner side surface of the track groove 1 close to the crossbeam 4. Preferably, two sets of auxiliary wheels 10 are provided on the auxiliary wheel hanging plate 9, and the two sets of auxiliary wheels 10 are symmetrically arranged on both sides of the supporting hanging plate 8.

[0023] A longitudinal moving drive device is fixed on the power mounting plate 13, and the longitudinal moving drive device includes a motor fixed on the power mounting plate, a driving gear Ⅰ16 installed on the end of the power mounting plate 13, and two auxiliary guide wheels 17. The motor output shaft is connected to the driving gear Ⅰ16 through a coupling, and both ends of the toothed belt Ⅰ15 are fixed to the two ends of the track groove 1. The two auxiliary guide wheels 17 are arranged on both sides of the driving gear Ⅰ16. The toothed belt Ⅰ15 sequentially bypasses the auxiliary guide wheel 17 and the driving gear Ⅰ16 and makes the toothed belt Ⅰ15 mesh with the driving gear Ⅰ16.

[0024] One end of the main hanging plate 7 in the transverse direction is fixed to the upper surface of the cross beam 4 by bolts, and long strip holes are provided at the corresponding fixed positions of the main hanging plate 7 along the length direction of the cross beam 4, which is convenient for adjusting the transverse fixed position of the main hanging plate 7 on the cross beam so as to install the supporting hanging plate 8 more smoothly.

[0025] The supporting hanging plate 8 is connected to one end of the main hanging plate 7 in the vertical direction by bolts, and long strip holes are provided at the connection positions of the two, and the bolts pass through the long strip holes to facilitate the adjustment of the installation height of the supporting hanging plate 8 and better cooperate with the longitudinal sliding seat 3 for installation so that the installation heights at both ends of the cross beam 4 are the same.

[0026] Preferably in this embodiment, two longitudinal sliding seats 3 are provided on the longitudinal sliding rail 2. The longitudinal section of the supporting hanging plate 8 is L-shaped, and the end is two horizontal end faces 11. Long strip holes are provided on the two end faces 11 along the length direction of the cross beam 4, and the two end faces 11 are respectively pressed on the tops of the two longitudinal sliding seats 3. The arrangement of the two longitudinal sliding seats 3 and the two end faces 11 can make the installation of the cross beam 4 more stable and reduce the shaking. The end faces 11 at the same end of the cross beam 4 can be in the same fixed state or different fixed states. For example, when one end of the cross beam 4 is fixed and the other end is not fixed, for the two end faces 11 at the fixed end, one of the end faces 11 can be fixed, and the other end face 11 can be fixed or not fixed.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A connecting structure between the cross beam and the longitudinal beam of a hoisting device, characterized in that: It includes a cross beam and two longitudinal beams, and both ends of the cross beam are respectively connected to the longitudinal beams through hanging brackets; The longitudinal beam includes a U-shaped track groove, a longitudinal slide rail is fixed in the track groove, a longitudinal slide seat is arranged on the longitudinal slide rail, and a toothed belt Ⅰ is arranged in the track groove along the length direction of the track groove; The hanging bracket includes an L-shaped main hanging plate arranged at the end of the cross beam. A support hanging plate, an auxiliary wheel hanging plate and a power installation hanging plate are fixed on the main hanging plate. The end of the support hanging plate is a horizontal end surface, and a long strip hole is arranged on the end surface along the length direction of the cross beam. The end surface presses on the top of the longitudinal slide seat, and a fixing piece passes through the long strip hole on the end surface at the top of the longitudinal slide seat. The two fixing pieces do not fix the end surface on the longitudinal slide seat at the same time. An auxiliary wheel is fixed at the end of the auxiliary wheel hanging plate, and the auxiliary wheel is closely attached to the inner side surface of the track groove close to the cross beam. A longitudinal movement driving device is fixed on the power installation hanging plate. The longitudinal movement driving device includes a motor fixed on the power installation hanging plate, a driving gear Ⅰ installed at the end of the power installation hanging plate and two auxiliary guide wheels. The output shaft of the motor is connected to the driving gear Ⅰ through a coupling. Both ends of the toothed belt Ⅰ are fixed at both ends of the track groove. The two auxiliary guide wheels are arranged on both sides of the driving gear Ⅰ. The toothed belt Ⅰ sequentially bypasses the auxiliary guide wheels and the driving gear Ⅰ and meshes the toothed belt Ⅰ with the driving gear Ⅰ; The auxiliary wheel hanging plate is "n"-shaped, and both ends of the auxiliary wheel hanging plate are respectively connected to the main hanging plate and the auxiliary wheel; The horizontal end of the main hanging plate is fixed to the upper surface of the cross beam by bolts, and long strip holes are arranged at the corresponding fixing positions of the main hanging plate along the length direction of the cross beam; The support hanging plate is connected to the vertical end of the main hanging plate by bolts, and long strip holes are arranged at the connection positions of the two, and the bolts pass through the long strip holes; Two longitudinal slide seats are arranged on the longitudinal slide rail. The longitudinal section of the support hanging plate is L-shaped, and the end is two horizontal end surfaces. Long strip holes are arranged on the two end surfaces along the length direction of the cross beam. The two end surfaces respectively press on the tops of the two longitudinal slide seats; A longitudinal track seat is fixed at the bottom of the track groove, and the longitudinal slide rail is fixed on the longitudinal track seat.

2. The connecting structure between the cross beam and the longitudinal beam of a hoisting device according to claim 1, characterized in that: Two groups of auxiliary wheels are arranged on the auxiliary wheel hanging plate, and the two groups of auxiliary wheels are symmetrically arranged on both sides of the support hanging plate.

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