Banana stem clamping device

Abstract

The application discloses a banana stem clamping device and relates to the technical field of banana processing and handling machines. The banana stem clamping device comprises a rack, a drill bit assembly and a driving mechanism. The platform of the rack is provided with a feeding port. The drill bit assembly and the driving mechanism are arranged on the rack. At least one set of drill bit assemblies is connected to the driving mechanism. The drill bit assembly is arranged above the feeding port and parallel to the symmetry line direction of the cross section of the feeding port. The application has the advantages that the operation of drilling and withdrawing the drill bit into and out of the stem is relatively flexible, the clamping performance and the robustness and universality of the operation are improved, the problems of stem sliding, falling and being difficult to remove after combing in the current banana mechanical combing mode can be effectively solved, the problems of complex structure, heaviness, poor universality and even mechanical damage to banana fruits caused by the traditional clamping device can be effectively solved, and therefore, the green, reliable and efficient combing of bananas is better achieved, and the banana industry is benefited.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of banana processing machinery, in particular to a banana stem clamping device. BACKGROUND

[0002] Bananas are one of the largest fruits in the world, and their planting area and yield are showing a trend of increasing year by year. However, the traditional manual dehulling operation mode is still adopted by most banana farmers, which is labor-intensive, low-efficiency and expensive in labor cost. Therefore, mechanical dehulling has become an effective method to solve the above-mentioned problems in the banana industry.

[0003] However, the fixation of the whole banana spike is a difficult point that cannot be ignored in the process of mechanical dehulling of bananas, mainly because the banana spike has the characteristics of large volume, high weight and easy mechanical damage to the fruit. In addition, the clamping method of the banana stem, which has viscoelastic properties, cannot simply copy the clamping of rigid bodies, otherwise the banana stem will slip, the outer skin will crack and the banana spike will fall off, which is not conducive to the sustainable development of the mechanical dehulling process of bananas.

[0004] The existing banana stem clamping device or auxiliary clamping device still uses the design method of industrial clamping jaws. However, in the process of mechanical dehulling, the banana stem may slide down or even fall off from the clamping device when using this clamping jaw structure. Therefore, there is an urgent need for a banana stem clamping device suitable for mechanical dehulling of bananas. SUMMARY

[0005] The purpose of the present application is to provide a banana stem clamping device to solve the above-mentioned problems of the prior art, so that the banana stem does not slide down and fall off during clamping, and the banana stem is clamped firmly and easily released.

[0006] To achieve the above-mentioned purpose, the present application provides the following solutions:

[0007] The present application provides a banana stem clamping device, which comprises a rack, a drill bit assembly and a driving mechanism. The platform of the rack is provided with a feeding port. The drill bit assembly and the driving mechanism are both arranged on the rack. At least one set of drill bit assemblies is connected to the driving mechanism. The drill bit assembly is arranged above the feeding port and parallel to the symmetry line direction of the cross section of the feeding port. The feeding port is used to put the banana stem, and the drill bit assembly is used to drill into the banana stem for fixation.

[0008] Preferably, the drill bit assembly comprises a drill bit, a drill rod and a bracket. The bracket is arranged on the platform. One end of the drill bit is inserted into the insertion hole of the drill rod and fixed by a pin. The drill rod is horizontally rotatably connected to the bracket by a bearing.

[0009] Preferably, the driving mechanism comprises coaxially arranged horizontal driving mechanism and rotary driving mechanism, the horizontal driving mechanism drives the drill bit to drill into the banana stem, and the rotary driving mechanism can rotate the drill bit.

[0010] Preferably, the rotary driving mechanism comprises a motor and a gear transmission mechanism, the motor is connected with a transmission shaft through a shaft coupling, the gear transmission mechanism comprises a large bevel gear and a small bevel gear, the transmission shaft is movably inserted with the large bevel gear through a flat key, the large bevel gear is engaged with the small bevel gear, the drill rod is movably inserted with the small bevel gear through a flat key, and the small bevel gear is fixedly connected with the inner ring of the bearing.

[0011] Preferably, the horizontal driving mechanism comprises a lifting mechanism, a pressing plate and a circular truncated cone support, the lifting mechanism is connected above the motor, the transmission shaft is fixedly connected with the pressing plate, the circular truncated cone support is provided with a plurality of inclined rib plates between the upper circular ring and the lower circular ring, the pressing plate can abut against the upper circular ring, and the outer end of each drill rod is correspondingly arranged with one rib plate and relatively slides.

[0012] Preferably, a plurality of guide columns are arranged between the upper circular ring and the platform, the top of the guide column is provided with a limiting nut, a reset spring is arranged between the upper circular ring and the platform, and the reset spring is sleeved on the guide column.

[0013] Preferably, the outer end of the drill rod is provided with a ball head, a reset spring is sleeved on the drill rod between the support and the ball head, the pressing plate is in inverted U shape, and the middle shaft sleeve of the pressing plate is fixedly connected with the transmission shaft through a pin shaft.

[0014] Preferably, the drill rod and the rib plate are both distributed with four along the circumference of the lower circular ring, the diameter difference between the upper circular ring and the lower circular ring is not greater than the radius of the circular feed inlet, the lifting mechanism is an electric push rod, a hydraulic cylinder or an air cylinder, the upper end of the lifting mechanism is connected with a hanger, and the hanger is arranged on the platform.

[0015] Preferably, a sleeve is arranged on the upper circular ring of the circular truncated cone support, a bearing is arranged between the sleeve and the large bevel gear, the outer ring of the bearing is fixedly connected with the support of the drill bit assembly, and the sleeve is abutted by the pressing plate when the pressing plate is pressed.

[0016] Preferably, the platform of the rack is at least 1m high, the bottom of the rack is provided with four stand columns, the bottom of the stand column is provided with universal casters, an annular platform is connected with the rack through a plurality of support columns, and the drill bit assembly and the driving mechanism are arranged on the annular platform.

[0017] The present application has the following technical effects relative to the prior art:

[0018] The banana stem clamping device of the present application has relatively flexible operation of drilling into and out of the stem, improved clamping performance and robustness and universality of operation, effectively solves the problems of stem sliding and falling off during mechanical carding of bananas, and difficulty in removing the stem after carding, and effectively solves the problems of complex structure, clumsiness, poor universality, and even mechanical damage to banana fruits of traditional clamping devices, thereby better achieving green, reliable and efficient carding of bananas, and benefiting the banana industry. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0020] Figure 1 is a structural schematic diagram of the banana stem clamping device in the embodiment of the present application;

[0021] Figure 2 is a partial structural schematic diagram of the banana stem clamping device in the embodiment of the present application Figure One ;

[0022] Figure 3 is a partial structural schematic diagram of the banana stem clamping device in the embodiment of the present application Figure Two ;

[0023] Figure 4 is a partial structural schematic diagram of the banana stem clamping device in the embodiment of the present application Figure Three ;

[0024] In the figure: 1 - rack, 2 - platform, 3 - annular platform, 4 - universal caster, 5 - hanger, 6 - lifting mechanism, 7 - motor, 8 - transmission shaft, 9 - lower pressing plate, 10 - large bevel gear, 11 - small bevel gear, 12 - bearing, 13 - circular table support, 14 - support, 15 - drill bit, 16 - drill rod, 17 - flat key, 18 - ball head, 19 - sleeve, 20 - rib plate, 21 - guide column, 22 - return spring, 23 - latch, 24 - limit nut. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are only a part 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 efforts fall within the protection scope of the present application.

[0026] The present application aims to provide a banana stem clamping device to solve the problems existing in the prior art, so that the stem does not slide and fall off during clamping, and the stem is firmly clamped and easily released.

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0028] As shown in Figures 1 to 4 The present application provides a banana stem clamping device, which includes a rack 1, a drill bit assembly and a driving mechanism. A feeding port is arranged on a platform 2 of the rack 1. The drill bit assembly and the driving mechanism are arranged on the rack 1. At least one set of drill bit assemblies is connected to the driving mechanism. The drill bit assemblies are arranged above the feeding port and parallel to the symmetry line direction of the cross section of the feeding port. The feeding port is used to put the stem. The drill bit assembly is used to drill into the stem for fixation. In the present embodiment, the feeding port is a section of a circular tube.

[0029] As an optional solution, the drill bit assembly in the present embodiment includes a drill bit 15, a drill rod 16 and a bracket 14. The bracket 14 is arranged on the platform 2. One end of the drill bit 15 is inserted into the insertion hole of the drill rod 16 and is fixed by a pin 23. The drill rod 16 is horizontally rotationally connected to the bracket 14 through a bearing 12 to realize the axial positioning of the drill rod 16. The drill bit assembly can be arranged in only one set, so that it penetrates the stem. At least 5 cm is reserved at the upper end of the stem. Two sets of drill bit assemblies can be symmetrically arranged to balance the force of the drill bit 15. Alternatively, two sets of drill bits with an included angle of 90° can be arranged above and below the stem to penetrate the stem respectively, so that the fixation is more secure. In the present embodiment, four sets of drill bits 15 are preferably arranged in the same plane. The drill bit 15 is relatively flexible in drilling and exiting. The problems of stem sliding during clamping and the stem being difficult to take out after combing are avoided. The reliability is strong. The method of circumferentially distributing the drill bits 15 for drilling also does not need to consider the shape of the stem. The method has good clamping effect on different varieties and has strong universality.

[0030] As an optional solution, the driving mechanism in the present embodiment includes a horizontal driving mechanism and a rotary driving mechanism arranged coaxially. The horizontal driving mechanism drives the drill bit 15 to drill into the stem. The rotary driving mechanism can rotate the drill bit 15.

[0031] As an alternative, the rotating driving mechanism in the embodiment comprises a motor 7 and a gear transmission mechanism, the motor 7 is connected with a transmission shaft 8 through a shaft coupling, the gear transmission mechanism comprises a large bevel gear 10 and a small bevel gear 11, the transmission shaft 8 is movably inserted with the large bevel gear 10 through a flat key 17, the flat key 17 is fixedly connected with the transmission shaft 8, the large bevel gear 10 is engaged with the small bevel gear 11 to realize the change of the transmission direction, and the rotating driving mechanism can drive the drill bit 15 to rotate, the drill rod 16 is movably inserted with the small bevel gear 11 through the flat key 17, and the small bevel gear 11 is fixedly connected with the inner ring of the bearing 12. The flat key 17 is fixedly connected with the drill rod 16, the length of the flat key 17 is greater than the distance between the small bevel gear 11 and the inner ring of the bearing 12, so that the drill rod 16 can slide along the axial direction of the small bevel gear 11 and the inner ring of the bearing 12, and the end of the stem is generally higher than the drill bit 15 by at least 5 cm to avoid the drill bit splitting the stem and slipping off.

[0032] As an alternative, the horizontal driving mechanism in the embodiment comprises the lifting mechanism 6, the pressing plate 9 and the circular-truncated-cone-shaped support 13, the lifting mechanism 6 is connected above the motor 7, the pressing plate 9 is fixedly connected on the transmission shaft 8, and the circular-truncated-cone-shaped support 13 is provided with a plurality of inclined rib plates 20 between the upper ring and the lower ring, the pressing plate 9 can abut against the upper ring, and the outer end of each drill rod 16 is correspondingly arranged with and slides relative to one rib plate 20, and the rib plate 20 is equivalent to a slide. In the embodiment, since the diameter of the upper ring of the circular-truncated-cone-shaped support 13 is smaller than the diameter of the lower ring, when the circular-truncated-cone-shaped support 13 moves downward, the drill rod 16 is pressed to move inward horizontally, and the feed movement to the stem is realized by the rotation of the drill bit 15.

[0033] As an alternative, a plurality of guide columns 21 are arranged between the upper ring and the platform 2 in the embodiment, the top of the guide column 21 is provided with a limiting nut 24, a reset spring 22 is arranged between the upper ring and the platform 2, the reset spring 22 is sleeved on the guide column 21, so that after the pressing plate 9 is reset, the circular-truncated-cone-shaped support 13 is also automatically reset, and the reset spring 22 can play a role of flexible buffering and rebounding to avoid rigid impact between parts.

[0034] As an alternative, the outer end of the drill rod 16 is provided with a ball head 18, and the reset spring 22 is sleeved on the drill rod 16 between the support 14 and the ball head 18, so that after the circular-truncated-cone-shaped support 13 is reset, the ball head 18 is also automatically reset, and the reset spring 22 can play a role of flexible buffering and rebounding to avoid rigid impact between parts. The pressing plate 9 is in an inverted U shape, the middle shaft sleeve of the pressing plate 9 is fixedly connected with the transmission shaft 8 through a pin shaft, and the motor 7, the transmission shaft 8 and the pressing plate 9 are lifted together by the lifting mechanism 6.

[0035] As an alternative, the drill rod 16 and the rib plate 20 in the embodiment are uniformly distributed with four along the circumference of the lower circular ring, and the diameter difference between the upper circular ring and the lower circular ring is not greater than the radius of the circular feed port; the lifting mechanism 6 is an electric push rod, a hydraulic cylinder or a pneumatic cylinder, the upper end of the lifting mechanism 6 is connected to a hanger 5, the hanger 5 is arranged on the platform 2, and the lifting support is provided. The lifting mechanism 6 of the embodiment is preferably an electric push rod.

[0036] As an alternative, a sleeve 19 is arranged on the upper circular ring of the circular-truncated-cone-shaped support 13 in the embodiment, a large bearing 12 is arranged between the sleeve 19 and the large bevel gear 10, the outer ring of the large bearing 12 is fixedly connected with the support 14 of the drill bit assembly, the meshing and positioning of the large bevel gear 10 and the small bevel gear 11 are realized, and the lower pressing plate 9 is in abutment with the sleeve 19 when the lower pressing plate 9 is pressed down, so as to facilitate the rotation of the large bevel gear 10 relative to the circular-truncated-cone-shaped support 13.

[0037] As an alternative, the platform 2 of the rack 1 is at least 1 m high, which is matched with the overall height of the banana stem. In the embodiment, the length and width of the platform 2 are both 1 m, and the feed port is a circular port with a diameter greater than the maximum banana stem. The bottom of the rack 1 is provided with four vertical columns, and the bottom of the vertical column is provided with a universal swivel caster 4. Based on the characteristics of convenient movement of the universal swivel caster 4, the device of the embodiment can be used independently or in cooperation with the cableway for transporting banana stems in the field. The rack 1 is connected with a ring-shaped platform 3 through a plurality of support columns, and the drill bit assembly and the driving mechanism are arranged on the ring-shaped platform 3, so as to reserve more height for the banana stem to extend out of the platform 2. The independent split structure of the ring-shaped platform 3 and the platform 2 can estimate the position of the top of the banana stem in advance through the gap between the ring-shaped platform 3 and the platform 2, and the length of the banana stem top extending in can be determined according to observation, so as to facilitate the control of the length of the banana stem top extending in.

[0038] The specific working process and principle of the banana stem clamping device of the embodiment are as follows:

[0039] The uppermost hanger 5 of the rack 1 is provided with an electric push rod, which can drive the motor 7, the transmission shaft 8 and the lower pressing plate 9 to realize lifting movement together, the motor 7 can drive the transmission shaft 8 and the large bevel gear 10 to rotate, and the lower pressing plate 9 realizes rotation and vertical movement at the same time. With the lower pressing plate 9 gradually contacting and pressing down the circular-truncated-cone-shaped support 13, the relative displacement between the ball head 18 and the rib plate 20 is generated, the rib plate 20 on the circular-truncated-cone-shaped support 13 can push the drill rod 16 to move along the radial direction of the banana stem, at the same time, the rotation of the large bevel gear 10 drives the small bevel gear 11 to rotate, and then the drill bit 15 rotates and drills into the banana stem in the process of translation, when the ball head 18 moves from top to bottom to the lower end of the rib plate 20 (relative movement), the purpose of clamping the banana stem is realized.

[0040] When all bananas on the bunch are combed by the device clamping, without changing the rotation direction of the motor 7, only need to make the electric push rod retract upward, which can drive the motor 7, the transmission shaft 8 and the lower plate 9 to move upward. In the case of no extrusion of the lower plate 9, the circular cone-shaped bracket 13 and the drill rod 16 are gradually released and start to reset under the driving of the reset spring 22, so as to drive the drill bit 15 to leave the banana stem (has a drill hole, the drill bit 15 can directly exit), and the banana stem can be taken away, and the clamping preparation for the combing work of the next bunch is completed. When all the work is completed, the clamping device as a whole can be moved to the workshop under the action of the universal wheel to clean the impurities and maintain, so as to prepare for the next work.

[0041] The device of the embodiment has simple and novel structure, and the principle is easy to understand and operate. In the whole clamping process, only need to control the extension and retraction length of the electric push rod when clamping and exiting the banana stem, and the above-mentioned purpose can be achieved.

[0042] The principle and implementation manner of the present application are described by using specific examples in the present application. The above embodiment is only used to help understand the method of the present application and its core idea. Meanwhile, for the general technical personnel in the field, according to the idea of the present application, the specific implementation manner and application range will be changed. In summary, the content of the specification should not be understood as the limitation of the present application.

Claims

1. A banana stem clamping device, characterized in that: The device includes a frame, a drill bit assembly, and a drive mechanism. A feed inlet is provided on the platform of the frame. Both the drill bit assembly and the drive mechanism are mounted on the frame. At least one set of the drill bit assembly is connected to the drive mechanism. The drill bit assembly is located above the feed inlet and is arranged parallel to the symmetry line of the cross-section of the feed inlet. The feed inlet is used to insert banana stems, and the drill bit assembly is used to drill into the banana stems for fixation. The drill bit assembly includes a drill bit, a drill rod, and a support. The support is disposed on the platform. One end of the drill bit is inserted into the insertion hole of the drill rod and fixed by a pin. The drill rod is horizontally rotatably connected to the support via a bearing. The driving mechanism includes a horizontal driving mechanism and a rotary driving mechanism coaxially arranged. The horizontal driving mechanism drives the drill bit to drill into the banana stem, and the rotary driving mechanism enables the drill bit to rotate. The rotary driving mechanism includes a motor and a gear transmission mechanism. The motor is connected to a transmission shaft via a coupling. The gear transmission mechanism includes a large bevel gear and a small bevel gear. The transmission shaft is movably connected to the large bevel gear via a flat key. The large bevel gear meshes with the small bevel gear. The drill rod is movably connected to the small bevel gear via a flat key, and the small bevel gear is fixedly connected to the inner ring of the bearing. The horizontal driving mechanism includes a lifting mechanism, a lower pressure plate, and a frustum-shaped bracket. The lifting mechanism is connected above the motor. The lower pressure plate is fixedly connected to the transmission shaft. Several inclined ribs are provided between the upper and lower rings of the frustum-shaped bracket. The lower pressure plate can abut against the upper ring. The outer end of each drill rod is correspondingly provided with one of the ribs and slides relative to it.

2. The banana stem clamping device according to claim 1, characterized in that: A plurality of guide posts are provided between the upper ring and the platform. A limit nut is provided on the top of the guide post. A return spring is provided between the upper ring and the platform and is sleeved on the guide post.

3. The banana stem clamping device according to claim 1, characterized in that: A ball head is provided at the outer end of the drill rod, and a return spring is sleeved on the drill rod between the bracket and the ball head; the lower pressure plate is inverted U-shaped, and the middle bushing of the lower pressure plate is fixedly connected to the transmission shaft by a pin.

4. The banana stem clamping device according to claim 1, characterized in that: The drill rod and the rib are each evenly distributed in fours along the circumference of the lower ring. The diameter difference between the upper ring and the lower ring is not greater than the radius of the circular feed inlet. The lifting mechanism is an electric push rod, a hydraulic cylinder or a pneumatic cylinder. The upper end of the lifting mechanism is connected to a hanger, which is set on the platform.

5. The banana stem clamping device according to claim 1, characterized in that: A sleeve is provided on the upper ring of the frustum-shaped bracket. A bearing is provided between the sleeve and the large bevel gear, and the outer ring of the bearing is fixedly connected to the bracket of the drill bit assembly. When the lower pressure plate is pressed down, it abuts against the sleeve.

6. The banana stem clamping device according to claim 1, characterized in that: The platform of the frame is at least 1m high, and four columns are provided at the bottom of the frame. The bottom of the columns is provided with omnidirectional casters. A ring platform is connected to the frame by several support columns, and the drill bit assembly and drive mechanism are both located on the ring platform.

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