High-torque packer

Abstract

The utility model discloses a high moment packing machine, which comprises a base, and a tightening frame, a tightening wheel, a driving shaft and a transmission mechanism which are arranged on the base, the transmission mechanism comprises a reduction gear set I which is arranged on the base and is connected with the driving shaft, and a reduction gear set II which is arranged on the tightening frame and is connected with the reduction gear set I, the third reduction gear set is arranged between the tightening wheel and the tightening frame, and the tightening wheel and the second reduction gear set are connected through the third reduction gear set. The packing machine adopts a multi-stage gear speed reduction mode, has the advantages of good structure compactness, high transmission efficiency and high output torque, and realizes the balance of torsion amplification, high transmission efficiency, stable transmission and long service life according to the multi-stage speed reduction gear structure through the design of graded transmission, space optimization and strength balance; therefore, enough torque is provided when the packing machine tightens a packing belt, meanwhile, efficient operation of the motor is kept, and the working efficiency and stability of the packing machine are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing machine technical field, concretely relates to a high moment packing machine. BACKGROUND

[0002] In the process of transporting and transferring, the most common way is to pack the scattered goods into a whole by the binding belt to avoid the goods scattering and damaging, and the packing machine is widely used in carton packing, industrial packing and daily necessities packing due to the high packing efficiency and stable tightening force.

[0003] The existing packing belt tightening machine mainly comprises a base, a driving device, a transmission mechanism linked with the driving device and a tightening mechanism linked with the power output mechanism, the transmission mechanism mainly comprises a worm and a worm wheel, the tightening mechanism comprises a tightening base linked with the transmission mechanism and a tightening handle, wherein the tightening base is rotatably installed on the base, a lower tooth plate is arranged below the tightening wheel on the base, when the belt is collected, the tightening wheel is pressed on the lower tooth plate, the driving device adopts an electric motor, the electric motor drives the tightening wheel to collect the binding belt, after the belt collecting action is completed, the handle needs to be manually operated to rotate the tightening frame away from the tightening wheel, so as to separate the binding belt; however, the following problems often occur in the actual use of the packing belt tightening machine: 1. the work efficiency of the worm and the worm wheel driven by the electric motor cannot meet the requirements, the output torque is not enough, the working machine cannot be moved, the motor load is increased, and the system response speed and stability are reduced; 2. when the belt is collected, if the tightening force is too large, the friction force of the binding belt will have a reverse force on the tightening wheel, and since the tightening frame is movable, the excessive tightening force can easily make the tightening frame pop away from the tightening wheel, which affects the packing belt tightening process and safety. SUMMARY

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problems in the prior art that the output torque of the packing machine is not enough, the working machine cannot be moved, the motor load is increased, and the system response speed and stability are reduced.

[0005] In order to solve the above technical problems, the utility model provides a high moment packing machine, which comprises a base and a tightening mechanism, a driving shaft and a transmission mechanism arranged on the base, the tightening mechanism comprises a tightening frame rotatably installed on the base and a tightening wheel rotatably arranged on one side of the tightening frame, the tightening wheel and the driving shaft are separately arranged at two ends of the base, the transmission mechanism connects the tightening wheel and the driving shaft, the transmission mechanism comprises a first speed reduction gear set arranged on the base and connected with the driving shaft, a second speed reduction gear set arranged on the tightening frame and connected with the first speed reduction gear set, and a third speed reduction gear set arranged between the tightening wheel and the tightening frame, the third speed reduction gear set connects the tightening wheel and the second speed reduction gear set.

[0006] As a preferred solution, the speed reduction gear set one comprises a first bevel gear, a second bevel gear and a third spur gear which are sequentially arranged on the base, the second bevel gear has a straight tooth structure arranged coaxially, the straight tooth structure is engaged with the third spur gear, and the first bevel gear is arranged in linkage with the driving shaft.

[0007] As a preferred solution, the tightening frame is arranged on the base in linkage with the pin shaft, the tightening frame comprises a receiving cavity suitable for mounting the speed reduction gear set two, and a rotating shaft part formed on one side of the tightening frame for connecting the tightening wheel.

[0008] As a preferred solution, the speed reduction gear set two comprises a transition gear and an intermediate transmission gear which are arranged in the receiving cavity of the tightening frame, the transition gear is arranged coaxially with the pin shaft, and two gear parts of the transition gear are arranged in linkage with the intermediate transmission gear and the speed reduction gear set one respectively.

[0009] As a preferred solution, the speed reduction gear set three is a planetary gear set arranged between the tightening wheel and the tightening frame.

[0010] As a preferred solution, the speed reduction gear set three comprises a transmission sun gear arranged in the receiving cavity of the tightening frame and connected with the intermediate transmission gear, a sun gear rod coaxially extended from the transmission sun gear to the tightening wheel, a plurality of planetary gears arranged around the sun gear rod on the rotating shaft part, and a gear ring structure arranged on the inner wall of the tightening wheel and engaged with the plurality of planetary gears.

[0011] As a preferred solution, the base comprises a speed reduction cover covering part of the speed reduction gear set one, the speed reduction cover comprises a corner part provided with the first bevel gear and the second bevel gear.

[0012] As a preferred solution, the tightening mechanism comprises a one-way anti-back structure arranged on the tightening frame and matched with the speed reduction gear set two, the one-way anti-back structure is used to limit the reverse rotation of the tightening wheel when the tightening wheel is subjected to a reverse force during the tightening process.

[0013] As a preferred solution, the one-way anti-back structure comprises a loosening handle arranged swingably on the other side of the tightening frame, a pawl arranged in linkage with the loosening handle, and a ratchet wheel arranged on the other side of the tightening frame in linkage with the pawl and in rotation with a gear shaft, the gear shaft is extended to connect the intermediate transmission gear, the intermediate transmission gear is arranged coaxially with the ratchet wheel on the gear shaft, and a one-way bearing is arranged between the ratchet wheel and the gear shaft; the loosening handle has a first state of swinging relative to the tightening frame to make the pawl and the ratchet wheel in contact, and a second state of lifting the tightening frame to make the pawl and the ratchet wheel separated.

[0014] As a preferred solution, the tightening frame and the base form a middle space suitable for accommodating the one-way anti-back structure, and the base is provided with a tooth plate structure located below the tightening wheel.

[0015] Compared with the prior art, the above technical scheme of the utility model has the following advantages:

[0016] 1. In the packing machine, the driving shaft can be connected with the motor to obtain power, the driving shaft and the tightening wheel are separately arranged at both ends of the base, and the torque is transmitted between the driving shaft and the tightening wheel through the first, second and third reduction gear sets to drive the mechanical work, the multi-stage reduction gear structure is reasonably arranged between the base, the tightening frame and the tightening wheel, the product volume is effectively reduced, the transmission requirements of the transmission components in different directions and distance positions can be met, the packing machine adopts the multi-stage gear reduction mode, has the advantages of compact structure, high transmission efficiency, high output torque, and the transmission ratio is expanded, the multi-stage reduction gear structure realizes torque amplification, high transmission efficiency, stable transmission and long service life through step-by-step transmission, space optimization and strength balance design, the driving load can be adjusted, the stability is improved, the mechanical output energy is increased, sufficient torque is provided when the packing machine tightens the packing belt, the high-efficiency operation of the motor is maintained, and the working efficiency and stability of the packing machine are improved.

[0017] 2. In the packing machine, the second reduction gear set is composed of a transition gear and an intermediate transmission gear arranged in the accommodation cavity, the transition gear is connected between the intermediate transmission gear and the third circular gear through two gear parts, so that the torque is transmitted to the intermediate gear through the first reduction gear set, the second reduction gear set is reasonably arranged and installed in the space of the tightening frame, the installation structure is compact, the space occupation is reduced, and the installation and maintenance are facilitated, so that the motion and force are transmitted between the first and third reduction gear sets through the second reduction gear set, the transmission distance requirement between the driving shaft and the tightening wheel is met, and the transmission direction of the force is changed, so that the mechanical part of the packing machine is driven to perform the tightening work, and greater output torque is realized.

[0018] 3. In the packing machine, the third reduction gear set is designed by adopting a planetary gear set, the torque is transmitted to the planetary gear set through the transmission of the first two-stage reduction gear set, and the transmission cooperation of the last-stage planetary gear set further realizes speed change and torque increase, the core advantage of the planetary gear set lies in the coaxial transmission layout (sun gear, planetary gear and ring gear coaxial), which significantly reduces the radial size compared with the parallel shaft gear reducer, can reduce the volume and weight, realizes the lightweight design of the product, reduces the energy loss, is especially suitable for long-time continuous operation of the industrial packing scene, reduces the motor load inertia, makes the motor operate in the high-efficiency interval, reduces the energy consumption, and meets the large tension requirement of the packing belt tightening.

[0019] 4. The packing machine, the one-way anti-retreating knot includes the anti-loose handle, the pawl and the ratchet wheel arranged on the other side of the tightening frame, wherein the ratchet wheel and the intermediate transmission gear are coaxially arranged on the gear shaft, the intermediate transmission gear and the gear shaft are linked, and the one-way bearing is arranged between the ratchet wheel and the gear shaft, the rotation of the ratchet wheel is limited through the one-way bearing and the pawl, the reverse tension of the bandage formed by the tightening wheel can be maintained, and then the intermediate transmission gear and the gear shaft are limited to rotate in one direction when driven, so that the tightening wheel is prevented from reversing, the rebound problem of the packing machine when tightening the bandage is effectively overcome, the tightening force of the packing machine can be set larger, the tightening wheel maintains larger tension on the bandage, and the working reliability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 The three-dimensional structure schematic diagram of the high-torque packing machine provided by the present application is shown.

[0022] Figure 2 The side view of the high-torque packing machine of the present application is shown.

[0023] Figure 3 The installation structure schematic diagram of the speed reduction gear one and the speed reduction gear two of the present application is shown.

[0024] Figure 4 The installation structure schematic diagram of the speed reduction gear two and the one-way anti-retreating structure of the present application is shown.

[0025] Figure 5 The installation structure schematic diagram of the speed reduction gear three of the present application is shown.

[0026] Figure 6 The structure schematic diagram of the one-way anti-retreating structure of the present application is shown.

[0027] Explanation of reference numerals: 1, base; 11, speed reduction cover; 2, tightening frame; 21, rotating shaft part; 3, tightening wheel; 4, drive shaft; 5, speed reduction gear set one; 51, first bevel gear; 52, second bevel gear; 53, third circular gear; 6, speed reduction gear set two; 61, transition gear; 62, intermediate transmission gear; 63, pin shaft; 7, speed reduction gear set three; 71, transmission sun gear; 72, planetary gear; 73, sun gear rod; 8, one-way anti-back structure; 81, anti-loosening handle; 82, pawl; 83, ratchet wheel; 84, one-way bearing; 85, gear shaft; 9, middle space. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0029] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0032] Embodiment

[0033] The present embodiment provides a method for Figures 1-6The high-torque packing machine shown comprises a base 1 and a tightening mechanism arranged on the base 1, a driving shaft 4 and a transmission mechanism, the tightening mechanism comprises a tightening frame 2 rotatably arranged on the base 1 and a tightening wheel 3 rotatably arranged on one side of the tightening frame 2, the tightening wheel 3 and the driving shaft 4 are separately arranged at two ends of the base 1, the transmission mechanism connects the tightening wheel 3 and the driving shaft 4, the transmission mechanism comprises a first reduction gear set 5 arranged on the base 1 and connected with the driving shaft 4, a second reduction gear set 6 arranged on the tightening frame 2 and connected with the first reduction gear set 5, and a third reduction gear set 7 arranged between the tightening wheel 3 and the tightening frame 2, the third reduction gear set 7 connects the tightening wheel 3 and the second reduction gear set 6.

[0034] The above embodiment is the core technical scheme of the present embodiment, the driving shaft 4 is connected with a motor to obtain power, the torque is transmitted between the driving shaft 4 and the tightening wheel 3 through the first reduction gear set 5, the second reduction gear set 6 and the third reduction gear set 7 to drive the mechanical work, the multi-stage reduction gear structure is reasonably arranged between the base 1, the tightening frame 2 and the tightening wheel 3, the product volume is effectively reduced, the transmission requirements of the transmission components in different directions, distances and positions can be met, the packing machine adopts the multi-stage gear reduction mode, has the advantages of compact structure, high transmission efficiency, high output torque, large transmission ratio, the multi-stage reduction gear structure realizes torque amplification, high transmission efficiency, stable transmission and long service life through the step-by-step transmission, space optimization and strength balance design, the driving load can be adjusted, the stability is improved, the mechanical output energy is increased, sufficient torque is provided when the packing machine tightens the packing belt, the motor is kept in high-efficiency operation, and the working efficiency and stability of the packing machine are improved.

[0035] The following will be described in detail Figures 2-5 The specific arrangement of the transmission mechanism will be described in detail

[0036] The first reduction gear set 5 comprises a first bevel gear 51, a second bevel gear 52 and a third spur gear 53 arranged on the base 1 in sequence, the second bevel gear 52 has a straight tooth structure arranged coaxially, the straight tooth structure is meshed with the third spur gear 53, the first bevel gear 51 is arranged in linkage with the driving shaft 4, the base 1 comprises a reduction cover 11 covering part of the first reduction gear set 5, the reduction cover 11 comprises a corner portion provided with the first bevel gear 51 and the second bevel gear 52, the corner portion forms a right-angle space, the first bevel gear 51 and the second bevel gear 52 are meshed and connected in the right-angle space, the motor transmits torque to the first bevel gear 51 and the second bevel gear 52 through the driving shaft 4, and then transmits the torque to the second reduction gear set 6 through the third spur gear 53, the first reduction gear set 5 mainly changes the power transmission direction through the action of the two bevel gears, is suitable for the occasion that the shafts intersect, and thus the rotation speed and the torque are adjusted.

[0037] As Figure 4 shown, the tightening frame 2 is rotatably arranged on the base 1 through the pin shaft 63, that is, the tightening frame 2 can rotate a certain angle around the pin shaft 63 when it is under force, the tightening frame 2 includes a receiving cavity suitable for mounting the second speed reduction gear set 6, and a rotating shaft part 21 shaped on one side of the tightening frame 2 for connecting the tightening roller 3, the tightening roller 3 is rotatably arranged on the rotating shaft part 21; further preferably arranged, the second speed reduction gear set 6 includes a transition gear 61 and an intermediate transmission gear 62 arranged in the receiving cavity of the tightening frame 2, the transition gear 61 is rotatably arranged on the pin shaft 63 through a bearing, so that the transition gear 61 is coaxially arranged with the pin shaft 63, reducing the occupied space, wherein both ends of the transition gear 61 are coaxially connected with two gear parts respectively connecting the intermediate transmission gear 62 and the first speed reduction gear set 5, specifically through the transition gear 61 connecting the intermediate transmission gear 62 and the third circular gear 53, so as to realize the transmission cooperation of the second speed reduction gear set 6 and the first speed reduction gear set 5. The advantage of using this technical solution is that this second speed reduction gear set 6 is installed in the space of the tightening frame 2 by reasonable optimization, the installation structure is compact, the space occupation is reduced, and the installation and maintenance are convenient, so as to transmit motion and force between the first speed reduction gear set 5 and the third speed reduction gear set 7 through the second speed reduction gear set 6, so as to meet the demand of transmission distance between the driving shaft and the tightening roller, and change the transmission direction of force, so as to drive the mechanical part of the packing machine to perform tightening work, and realize greater output torque.

[0038] As Figure 5As shown, the third reduction gear set 7 is a planetary gear set arranged between the tightening wheel 3 and the tightening frame 2. Specifically, the third reduction gear set 7 includes a transmission sun gear 71 arranged in the receiving cavity of the tightening frame 2 and connected to the intermediate transmission gear 62, a sun gear rod 73 coaxially extending from the transmission sun gear 71 into the tightening wheel 3, and a plurality of planetary gears 72 arranged around the sun gear rod 73 on the rotating shaft portion 21. The third reduction gear set 7 also includes a ring gear structure arranged on the circumferential inner wall of the tightening wheel 3 and engaged with the plurality of planetary gears 72. With the planetary gear set design of the third reduction gear set 7, the torque is transmitted to the planetary gear set through the transmission of the first two-stage reduction gear set, and further speed change and torque increase are achieved through the transmission cooperation of the last-stage planetary gear set, so as to finally drive the rotation of the tightening wheel 3 to complete the tightening operation on the packing belt. The core advantage of the planetary gear set lies in its coaxial transmission layout (sun gear, planetary gear, and ring gear on the same axis), which significantly reduces the radial size compared to the parallel shaft gear reducer, thereby reducing the volume and weight, achieving lightweight design, reducing energy loss, being particularly suitable for long-time continuous operation in industrial packaging scenarios, reducing motor load inertia, making the motor operate in the high-efficiency interval, reducing energy consumption, and meeting the large tension requirement of the packing belt tightening. In the embodiment, the packaging machine adopts a three-stage reduction gear set transmission form. The three-stage reduction gear set can realize modular assembly, is convenient for later maintenance, and can form different speed ratio combinations by replacing the gear modules at each stage, so as to meet the torque and speed requirements of different equipment.

[0039] In the embodiment, the tightening mechanism includes a one-way anti-backup structure 8 arranged in the tightening frame 2 and matched with the second reduction gear set 6. The one-way anti-backup structure 8 is used to limit the reverse rotation of the tightening wheel caused by the reverse force during the belt tightening process. The tightening frame 2 and the base 1 form a middle space 9 suitable for accommodating the one-way anti-backup structure 8. The base 1 is provided with a tooth plate structure below the tightening wheel 3. This design is a reasonable optimization of the position space between the base and the tightening frame to meet the installation requirements of the one-way anti-backup structure, and the structure is more compact, reduces the occupied space, and is beneficial to reducing the product volume.

[0040] As a preferred embodiment, the packaging machine is combined with the one-way anti-backup structure 8. Figure 4 and Figure 6As shown, the one-way anti-back structure 8 includes an anti-loose handle 81 swingingly arranged on the other side of the tightening frame 2, a pawl 82 linked with the anti-loose handle 81, and a ratchet wheel 83 swingingly arranged on the other side of the tightening frame 2 and matched with the pawl 82 through a gear shaft 85, the gear shaft 85 is extended to connect the intermediate transmission gear 62, the intermediate transmission gear 62 is coaxially arranged on the gear shaft 85 with the ratchet wheel 83, wherein the intermediate transmission gear 62 and the gear shaft 85 are linked, and a one-way bearing 84 is arranged between the ratchet wheel 83 and the gear shaft 85; the anti-loose handle 81 has a first state of swinging relative to the tightening frame 2 to make the pawl 82 and the ratchet wheel 83 in matched contact, and a second state of lifting the tightening frame 2 to make the pawl 82 and the ratchet wheel 83 separated. With this structure, the rotation of the ratchet wheel 83 is limited by the one-way bearing 84 together with the pawl 82, so that the reverse tension of the wrapping belt on the tightening wheel 3 can be kept, and the intermediate transmission gear 62 and the gear shaft 85 are limited to rotate in one direction when driven by force, thereby avoiding the reverse of the tightening wheel 3 and effectively overcoming the rebound problem of the packing machine when tightening the wrapping belt, so that the tightening force of the packing machine can be set larger, the wrapping belt is kept in larger tension by the tightening wheel 3, and the working reliability is improved.

[0041] When the packing machine is tightening the belt, the drive shaft 4 drives the tightening wheel 3 to rotate through the multi-stage reduction gear structure, and the pawl 82 locks the ratchet wheel 83, so that the wrapping belt is kept in larger tension by the tightening wheel 3, and the belt tightening operation can be reliably completed; in addition, when the belt is released, the anti-loose handle drives the pawl 82 to move relative to the tightening seat 2 first, so that the pawl 82 and the ratchet wheel 83 are separated, thereby releasing the reverse tension of the wrapping belt on the tightening wheel 3, and then the anti-loose handle lifts the tightening seat together, thereby completing the belt releasing operation, which is more labor-saving; when the anti-loose handle lifts the tightening frame 2, only the two groups of reduction gear sets on one side of the tightening frame are lifted, and the reduction gear set on the other side of the tightening frame is not lifted.

[0042] Obviously, the above embodiments are only examples for clearly illustrating, but not limiting the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. All the embodiments do not need to be exhausted, and the obvious changes or variations still fall within the protection scope of the present utility model.

Claims

1. A high-torque baling press comprising a base (1) and a tightening mechanism arranged on the base, a drive shaft (4) and a transmission mechanism, the tightening mechanism comprising a tightening frame (2) rotatably mounted on the base (1) and a tightening roller (3) rotatably arranged on one side of the tightening frame (2), characterized in that: The tightening wheel (3) and the driving shaft (4) are separately arranged at both ends of the base (1), the transmission mechanism connects the tightening wheel (3) and the driving shaft (4), the transmission mechanism comprises a first speed reduction gear set (5) arranged on the base (1) and connected with the driving shaft (4), a second speed reduction gear set (6) arranged on the tightening frame (2) and connected with the first speed reduction gear set (5), and a third speed reduction gear set (7) arranged between the tightening wheel (3) and the tightening frame (2), the third speed reduction gear set (7) is connected with the tightening wheel (3) and the second speed reduction gear set (6).

2. The high-torque baler of claim 1, characterized in that: The first speed reduction gear set (5) comprises a first bevel gear (51), a second bevel gear (52) and a third circular gear (53) arranged in sequence on the base (1), the second bevel gear (52) has a straight tooth structure arranged coaxially, the straight tooth structure is meshed with the third circular gear (53), and the first bevel gear (51) is arranged in linkage with the driving shaft (4).

3. The high-torque baler of claim 1, wherein: The tightening frame (2) is rotatably arranged on the base (1) through a pin shaft (63), the tightening frame (2) comprises a receiving cavity suitable for mounting the second speed reduction gear set (6), and a rotating shaft part (21) formed on one side of the tightening frame (2) for connecting the tightening wheel (3).

4. The high-torque baler of claim 3, characterized in that: The second speed reduction gear set (6) comprises a transition gear (61) and an intermediate transmission gear (62) arranged in the receiving cavity of the tightening frame (2), the transition gear (61) is arranged coaxially with the pin shaft (63), and two gear parts respectively connected with the intermediate transmission gear (62) and the first speed reduction gear set (5) are arranged in linkage at both ends of the transition gear (61).

5. The high-torque baler of claim 4, characterized in that: The third speed reduction gear set (7) is a planetary gear set arranged between the tightening wheel (3) and the tightening frame (2).

6. The high-torque baler of claim 5, characterized in that: The third speed reduction gear set (7) comprises a transmission sun gear (71) arranged in the receiving cavity of the tightening frame (2) and connected with the intermediate transmission gear (62), a sun gear rod (73) coaxially extended from the transmission sun gear (71) into the tightening wheel (3), a plurality of planetary gears (72) arranged around the sun gear rod (73) on the rotating shaft part (21), and a gear ring structure arranged on the circumferential inner wall of the tightening wheel (3) and meshed with the plurality of planetary gears (72).

7. The high-torque baler of claim 2, characterized by: The base (1) comprises a speed reduction cover (11) covering part of the first speed reduction gear set (5), the speed reduction cover (11) comprises a corner part provided with the first bevel gear (51) and the second bevel gear (52).

8. The high-torque baler of any of claims 1-7, characterized by: The tightening mechanism comprises a one-way anti-back structure (8) arranged on the tightening frame (2) and matched with the second speed reduction gear set (6), the one-way anti-back structure (8) is used to limit the reverse rotation of the tightening wheel (3) when the tightening wheel (3) is subjected to a reverse force during the tightening process.

9. The high-torque baler of claim 8, characterized in that: The one-way anti-back structure (8) comprises a loosening handle (81) swingingly arranged on the other side of the tightening frame (2) and a pawl (82) linked with the loosening handle (81), and a ratchet wheel (83) rotatably arranged on the other side of the tightening frame (2) and matched with the pawl (82) through a gear shaft (85), the gear shaft (85) extends to connect an intermediate transmission gear (62), the intermediate transmission gear (62) is coaxially arranged on the gear shaft (85) with the ratchet wheel (83), and a one-way bearing (84) is arranged between the ratchet wheel (83) and the gear shaft (85); the loosening handle (81) has a first state of swinging relative to the tightening frame (2) to make the pawl (82) in contact with the ratchet wheel (83), and a second state of lifting the tightening frame (2) to make the pawl (82) separate from the ratchet wheel (83).

10. The high-torque baler of claim 9, characterized in that: The tightening frame (2) and the base (1) form a middle space (9) suitable for accommodating the one-way anti-back structure (8), and the base (1) is provided with a tooth plate structure below the tightening wheel (3).

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