Poultry protection equipment for under-forest ecological breeding
By designing a poultry protective equipment that includes automatic opening of protective covers and automatic cleaning components, the waste of feed resources and health threats caused by food competition in ecological farming in forests is solved, and effective protection of poultry and efficient utilization of feed is achieved.
Patent Information
- Application Number
- CN202411815799.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-02-28
AI Technical Summary
In forest ecological farming, poultry, birds and small animals are inefficiently utilized and wasted feed resources due to food competition, and feed rot and excrement pollution pose a threat to the healthy growth of poultry.
Design a poultry protective equipment for ecological farming under the forest, including equipment base, protective cover, movable cover, cleaning assembly and driving assembly. The movable cover is automatically opened and closed through the meshing connection between the ring gear and the rack; the cleaning component is rotated by the scraper and the movable sleeve to clean the residual feed and feces inside the base of the equipment.
Effectively reduce the loss of feed by birds and small animals, prevent feed accumulation and feces pollution, and ensure the healthy growth and breeding benefits of poultry.
Smart Images

Figure CN119522851A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of poultry breeding, and in particular to a poultry protection device for ecological breeding under forests. Background Art
[0002] Ecological farming under the forest makes full use of forest space, creates a relatively open natural environment for poultry, and grants them the right to forage and move freely, allowing poultry to peck at natural food sources such as grass seeds, insects and young leaves of wild plants in the forest, thereby optimizing the dietary structure, reducing the amount of artificial feed, and reducing breeding costs. In addition, the open space helps poultry exercise, improves their immunity and resistance, and makes the meat firmer and more delicious, which meets consumers' demand for high-quality poultry meat.
[0003] Forest farming attracts a large number of birds and small animals due to the excellent ecological environment. Traditional feeding methods easily lead to food competition between birds and small animals and poultry. In order to ensure that poultry obtains sufficient food supply, it is often necessary to increase the amount of feeding. However, overfeeding not only causes inefficient use and waste of feed resources, but also some unconsumed feed will accumulate and rot. Moreover, the frequent visits of birds and small animals will leave excrement. The mixing of excrement and feed and the rotting of feed will have an adverse effect on the healthy growth of poultry, threatening the benefits of poultry farming and ecological stability.
[0004] Therefore, it is necessary to provide a kind of poultry protection equipment for ecological breeding under the forest, aiming at solving the above problems. Summary of the invention
[0005] The main purpose of the present invention is to provide a poultry protection device for ecological breeding under the forest, which can effectively solve the problems in the background technology.
[0006] To achieve the above object, the technical solution adopted by the present invention is:
[0007] A poultry protection device for ecological breeding under the forest, comprising a device base, a protective cover fixedly connected to the top of the device base, a fixed shaft symmetrically fixedly connected between the device base and the protective cover, a protection component arranged inside the device base, a semi-cylindrical trough opened on the top of the device base, a cleaning component arranged inside the device base and the protective cover, a driving component arranged at the bottom of the device base, the cleaning component comprising a movable sleeve, a scraper, a cleaning mechanism and an energy storage mechanism, the movable sleeve rotatably connected to the inside of the device base, and the scraper fixedly connected to the outside of the movable sleeve;
[0008] The protection assembly includes a movable cover rotatably connected to the outside of the protective cover through a fixed shaft, the bottom of the movable cover is symmetrically fixedly connected to a gear ring, the inside of the equipment base is symmetrically slidably connected to a movable frame, the top of the movable frame is fixedly connected to a rack, the rack and the gear ring are meshed with each other, and the bottom of the movable frame is fixedly connected to a movable rod;
[0009] The cleaning mechanism includes a driving sleeve symmetrically rotatably connected to the inside of the movable sleeve, the inside of the movable sleeve is symmetrically rotatably connected to a reciprocating screw, a spiral pair transmission is formed between the reciprocating screw and the driving sleeve, one end of the fixed shaft located in the movable sleeve is fixedly connected to an end face gear, the outside of the driving sleeve is fixedly connected to a cylindrical gear, the end face gear and the cylindrical gear are meshed with each other, the outside of the scraper is slidably connected to a cleaning block, and the cleaning block is fixedly connected to the reciprocating screw;
[0010] The driving assembly includes a support base fixedly connected to the bottom of the equipment base, a movable plate is slidably connected inside the support base, and a pedal is fixedly connected to the top of the movable plate;
[0011] A connecting plate is symmetrically fixedly connected to the bottom of the pedal, and a push rod is rotatably connected between the connecting plate and the movable rod.
[0012] As a further improvement of the above solution, a protrusion is symmetrically fixedly connected inside the device base, and a spring 1 is symmetrically fixedly connected between the movable frame and the protrusion.
[0013] As a further improvement of the above scheme, the support seat is rotatably connected to the inside with a mounting shaft, the movable sleeve is fixedly connected to the outside with a driven wheel, the mounting shaft is fixedly connected to the outside with a driving wheel, and a transmission belt is connected between the driven wheel and the driving wheel.
[0014] As a further improvement of the above solution, a fixing block is fixedly connected to the bottom of the movable sleeve, and a torsion spring is fixedly connected between the fixing block and the mounting shaft.
[0015] As a further improvement of the above scheme, the energy storage mechanism includes a fixed disk symmetrically fixedly connected to the outer side of the mounting shaft, a movable seat is symmetrically slidably connected inside the support seat, a spiral pair transmission is formed between the movable seat and the mounting shaft, a ratchet is rotatably connected to the outer side of the mounting shaft, a connecting disk is symmetrically fixedly connected to the outer side of the ratchet, a slider is symmetrically slidably connected inside the connecting disk and the fixed disk, a limiting rod is fixedly connected to the outer side of the slider, and a spring three is fixedly connected between the limiting rod and the movable seat.
[0016] As a further improvement of the above solution, a fixing seat is fixedly connected to the bottom of the support seat, a limiting block is slidably connected inside the fixing seat, and a spring four is fixedly connected between the limiting block and the fixing seat.
[0017] As a further improvement of the above scheme, a movable block is symmetrically fixedly connected to the lower surface of the pedal, a clamping block is evenly slidably connected inside the movable block, a spring 2 is fixedly connected between the clamping block and the movable block, and the clamping block is adapted to the ratchet.
[0018] As a further improvement of the above solution, square grooves are symmetrically opened inside the device base, and the movable frame is slidably connected between the square grooves and the protrusions.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] 1. The movable cover is connected by the meshing connection of the gear ring and the rack. When the poultry falls on the pedal, pressure is generated to drive the movable cover to rotate, so as to open the seal between the equipment base, the protective cover and the movable cover. When the poultry stops eating the feed, it closes automatically to reduce the loss of feed by birds and small animals. After many poultry consume the feed, the energy storage mechanism drives the scraper and the movable cover to rotate, clean the inside of the equipment base, prevent feed accumulation and feces pollution, and protect the poultry.
[0021] 2. The poultry steps on the pedal repeatedly to drive the movable block to move back and forth, and the ratchet wheel rotates continuously through the clamping block and the limit block. At the same time, the rotating installation shaft pushes the movable seat, causing the slider and the connecting disk to be released, the installation shaft is untied, and the elastic potential of the torsion spring is released, which provides energy for the rotation of the movable sleeve, realizing automatic cleaning inside the base of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0024] Figure 2 It is a structural schematic diagram of the present invention;
[0025] Figure 3 It is a structural schematic diagram of the present invention;
[0026] Figure 4 It is a structural schematic diagram of the present invention;
[0027] Figure 5 It is a structural schematic diagram of the present invention;
[0028] Figure 6 It is a structural schematic diagram of the present invention;
[0029] Figure 7 It is a structural schematic diagram of the present invention;
[0030] Figure 8 It is a structural schematic diagram of the present invention;
[0031] Fig. 9 It is a structural schematic diagram of the present invention;
[0032] Fig.10 It is a schematic diagram of the structure of the present invention.
[0033] In the figure: 1. Equipment base; 2. Protective cover; 3. Protective assembly; 31. Movable cover; 32. Gear ring; 33. Rack; 34. Movable frame; 35. Bump; 36. Spring 1; 37. Movable rod; 38. Push rod; 39. Connecting plate; 4. Fixed shaft; 5. Cleaning assembly; 51. Movable sleeve; 52. Scraper; 53. Cleaning mechanism; 531. Reciprocating screw; 532. Driving sleeve; 533. Face gear; 534. Cylindrical gear; 535. Cleaning block; 541. Driven wheel; 542. Driving wheel ; 543, transmission belt; 55, energy storage mechanism; 551a, movable block; 551b, clamping block; 551c, spring two; 552, movable seat; 553, fixed seat; 554, ratchet; 555, connecting plate; 556a, fixed plate; 556b, slider; 556c, limiting rod; 556d, spring three; 557a, limiting block; 557b, spring four; 56, fixed block; 57, mounting shaft; 58, torsion spring; 6, driving assembly; 61, supporting seat; 62, pedal; 63, movable plate. DETAILED DESCRIPTION
[0034] 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.
[0035] See also Figures 1 to 10As shown, the present invention provides an embodiment: a poultry protection device for ecological breeding under the forest, comprising a device base 1, a protective cover 2 is fixedly connected to the top of the device base 1, a fixed shaft 4 is symmetrically fixedly connected between the device base 1 and the protective cover 2, a protection component 3 is arranged inside the device base 1, a semi-cylindrical trough is opened on the top of the device base 1, a cleaning component 5 is arranged inside the device base 1 and the protective cover 2, a driving component 6 is arranged at the bottom of the device base 1, the cleaning component 5 comprises a movable sleeve 51, a scraper 52, a cleaning mechanism 53 and an energy storage mechanism 55, the movable sleeve 51 is rotatably connected to the inside of the device base 1, and the scraper 52 is fixedly connected to the outside of the movable sleeve 51;
[0036] The protection assembly 3 includes a movable cover 31 rotatably connected to the outside of the protection cover 2 through a fixed shaft 4, a gear ring 32 is symmetrically fixedly connected to the bottom of the movable cover 31, a movable frame 34 is symmetrically slidably connected to the inside of the equipment base 1, a rack 33 is fixedly connected to the top of the movable frame 34, the rack 33 and the gear ring 32 are meshed with each other, a movable rod 37 is fixedly connected to the bottom of the movable frame 34, a convex block 35 is symmetrically fixedly connected to the inside of the equipment base 1, and a spring 36 is symmetrically fixedly connected between the movable frame 34 and the convex block 35;
[0037] The cleaning mechanism 53 includes a driving sleeve 532 symmetrically connected to the inside of the movable sleeve 51, and the inside of the movable sleeve 51 is symmetrically connected to the reciprocating screw 531, and a spiral pair transmission is formed between the reciprocating screw 531 and the driving sleeve 532. One end of the fixed shaft 4 located in the movable sleeve 51 is fixedly connected to an end gear 533, and the outer side of the driving sleeve 532 is fixedly connected to a cylindrical gear 534, and the end gear 533 and the cylindrical gear 534 are meshed with each other. The outer side of the scraper 52 is slidably connected to a cleaning block 535, and the cleaning block 535 is fixedly connected to the reciprocating screw 531.
[0038] The driving assembly 6 includes a support base 61 fixedly connected to the bottom of the equipment base 1, a movable plate 63 is slidably connected inside the support base 61, and a pedal 62 is fixedly connected to the top of the movable plate 63;
[0039] A connecting plate 39 is symmetrically fixedly connected to the bottom of the pedal 62 , and a push rod 38 is rotatably connected between the connecting plate 39 and the movable rod 37 .
[0040] In practical application, the embodiment of the present invention is as follows: Figure 2 , Figure 3 , Figure 4 and Figure 8As shown, when the poultry wants to get feed, it falls on the pedal 62, and the pedal 62 is pressed downward, driving the movable plate 63 to slide in the support seat 61, and the connecting plate 39 at the bottom of the pedal 62 moves downward accordingly, and the movable rod 37 is pushed to move horizontally by the push rod 38, and the movable rod 37 drives the movable frame 34 to move horizontally along the protrusion 35 and compress the spring 1 36, and at the same time, the rack 33 on the top of the movable frame 34 moves horizontally. Since the rack 33 is engaged with the gear ring 32 at the bottom of the movable cover 31, the rack 33 moves horizontally to drive the gear ring 32 to rotate, so that the movable cover 31 rotates around the fixed shaft 4, and the seal between the equipment base 1 and the protective cover 2 is opened, so that the poultry can eat;
[0041] like Figures 2 to 7 As shown, during the poultry feeding process, as the feed is consumed, a large number of poultry repeatedly fall on the pedal 62, and the repeated up and down movement of the pedal 62 realizes the continuous rotation of the ratchet 554. When the rotating mounting shaft 57 is freed from the restraint, the elastic potential energy of the torsion spring 58 is released, providing power for the rotation of the movable sleeve 51, and the movable sleeve 51 starts to rotate;
[0042] like Figure 2 , Figure 3 , Figure 8 and Fig. 9 As shown, when the movable sleeve 51 rotates, the end face gear 533 inside it rotates with the fixed shaft 4. Since the end face gear 533 is meshed with the cylindrical gear 534, the cylindrical gear 534 drives the driving sleeve 532 to rotate. The driving sleeve 532 and the reciprocating screw rod 531 form a spiral pair transmission, so that the reciprocating screw rod 531 rotates, and the cleaning block 535 fixedly connected to the reciprocating screw rod 531 slides on the outside of the scraper 52. The scraper 52 rotates with the movable sleeve 51 to clean the inside of the equipment base 1, and clean the residual feed and feces to a specific position to avoid feed accumulation and feces pollution, so as to facilitate the next feed addition operation;
[0043] like Figure 3 and Fig.10 As shown, when the poultry leaves the pedal 62, under the action of the restoring force of the spring 36, the movable frame 34 moves to reset, and the movable cover 31 rotates in the opposite direction to close the seal, thereby preventing the birds and small animals from contacting the feed and reducing the feed loss.
[0044] like Figures 2 to 7As shown, the support seat 61 is internally rotatably connected with the mounting shaft 57, the outer side of the movable sleeve 51 is fixedly connected with a driven wheel 541, the outer side of the mounting shaft 57 is fixedly connected with a driving wheel 542, a transmission belt 543 is transmission-connected between the driven wheel 541 and the driving wheel 542, a fixing block 56 is fixedly connected to the bottom of the movable sleeve 51, a torsion spring 58 is fixedly connected between the fixing block 56 and the mounting shaft 57, the energy storage mechanism 55 includes a fixing plate 556a symmetrically fixedly connected to the outer side of the mounting shaft 57, the inner side of the support seat 61 is symmetrically slidably connected with a movable seat 552, a spiral pair transmission is formed between the movable seat 552 and the mounting shaft 57, the outer side of the mounting shaft 57 is rotatably connected with a ratchet 554, and the outer side of the ratchet 554 is symmetrically fixedly connected with a connecting plate 555 The connecting plate 555 and the fixed plate 556a are symmetrically and slidably connected with a slider 556b inside, and the outer side of the slider 556b is fixedly connected to a limiting rod 556c, and a spring three 556d is fixedly connected between the limiting rod 556c and the movable seat 552. The bottom of the support seat 61 is fixedly connected to a fixed seat 553, and the fixed seat 553 is internally slidably connected with a limiting block 557a, and a spring four 557b is fixedly connected between the limiting block 557a and the fixed seat 553. The lower surface of the pedal 62 is symmetrically and fixedly connected with a movable block 551a, and the inside of the movable block 551a is evenly and slidably connected with a clamping block 551b, and a spring two 551c is fixedly connected between the clamping block 551b and the movable block 551a, and the clamping block 551b is adapted to the ratchet 554.
[0045] In practical application, the embodiment of the present invention is as follows: Figure 7 As shown, when the poultry steps on the pedal 62, the pedal 62 is pressed and moves downward, driving the movable block 551a on its lower surface to move downward together, and the clamping block 551b inside the movable block 551a is partially clamped into the tooth groove of the ratchet 554 under the action of the second spring 551c. As the poultry repeatedly steps on the pedal 62, the movable block 551a generates an up and down reciprocating motion, thereby driving the clamping block 551b to drive the ratchet 554 to rotate intermittently;
[0046] like Figure 6 As shown, when the ratchet 554 rotates, the connecting disk 555 rotates accordingly because the connecting disk 555 is fixedly connected to the ratchet 554; the connecting disk 555 and the fixed disk 556a are mutually associated through the slider 556b and the limit rod 556c, and the mounting shaft 57 and the movable seat 552 form a spiral pair transmission. When the ratchet 554 rotates, the movable seat 552 is driven to move axially along the mounting shaft 57 through the connecting disk 555, the slider 556b, the limit rod 556c and other components, and the spring three 556d is compressed at the same time;
[0047] like Figure 5As shown, during the movement of the movable seat 552, when the slider 556b and the connecting plate 555 are disengaged from the clamping state, the mounting shaft 57 that was originally restricted from rotation is released. At this time, the driving wheel 542 on the outside of the mounting shaft 57 starts to rotate under the elastic restoring force of the torsion spring 58, and the driving wheel 542 drives the driven wheel 541 to rotate through the transmission belt 543, thereby rotating the movable sleeve 51 fixedly connected to the driven wheel 541. The rotation of the movable sleeve 51 drives the scraper 52 to scrape and clean the inside of the equipment base 1, and removes residual feed, feces and other debris to prevent feed accumulation and feces pollution, and ensure that the internal environment of the equipment base 1 is suitable for the next feed delivery and poultry eating.
[0048] When the poultry leaves the pedal 62, the pedal 62 returns to its initial position under the action of related components, the movable block 551a no longer drives the ratchet 554 to rotate, and the various components gradually return to their original positions under the action of elastic elements such as springs, waiting for the next time the poultry eats to trigger the cleaning action, thereby realizing the automatic cleaning function of the equipment and the protection function of the feed, effectively reducing the contact and consumption of feed by birds and small animals, ensuring the feed supply quality and sanitary safety of poultry in ecological farming under the forest, and promoting the healthy growth of poultry and improving the farming efficiency.
[0049] like Fig.10 As shown, square grooves are symmetrically provided inside the equipment base 1 , and the movable frame 34 is slidably connected between the square grooves and the protrusions 35 .
[0050] In actual application of the embodiment of the present invention, the movable frame 34 is slidably installed between the square groove and the protrusion 35 to ensure the stability of the movable frame 34 when pushed by the movable rod 37 .
[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A poultry protection device for ecological farming under forests, comprising a device base (1), characterized in that: The top of the device base (1) is fixedly connected to a protective cover (2), a fixed shaft (4) is symmetrically fixedly connected between the device base (1) and the protective cover (2), a protective component (3) is arranged inside the device base (1), a semi-cylindrical material trough is opened on the top of the device base (1), a cleaning component (5) is arranged inside the device base (1) and the protective cover (2), and a driving component (6) is arranged at the bottom of the device base (1), the cleaning component (5) comprises a movable sleeve (51), a scraper (52), a cleaning mechanism (53) and an energy storage mechanism (55), the movable sleeve (51) is rotatably connected to the inside of the device base (1), and the scraper (52) is fixedly connected to the outside of the movable sleeve (51); The protection assembly (3) comprises a movable cover (31) rotatably connected to the outside of the protection cover (2) via a fixed shaft (4); a gear ring (32) is symmetrically fixedly connected to the bottom of the movable cover (31); a movable frame (34) is symmetrically slidably connected to the inside of the equipment base (1); a rack (33) is fixedly connected to the top of the movable frame (34); the rack (33) and the gear ring (32) are meshed with each other; and a movable rod (37) is fixedly connected to the bottom of the movable frame (34); The cleaning mechanism (53) comprises a driving sleeve (532) symmetrically rotatably connected to the inside of the movable sleeve (51); the inside of the movable sleeve (51) is symmetrically rotatably connected to a reciprocating screw rod (531); a spiral pair transmission is formed between the reciprocating screw rod (531) and the driving sleeve (532); one end of the fixed shaft (4) located in the movable sleeve (51) is fixedly connected to an end face gear (533); the outside of the driving sleeve (532) is fixedly connected to a cylindrical gear (534); the end face gear (533) and the cylindrical gear (534) are meshed with each other; the outside of the scraper (52) is slidably connected to a cleaning block (535); the cleaning block (535) is fixedly connected to the reciprocating screw rod (531); The driving assembly (6) comprises a support base (61) fixedly connected to the bottom of the equipment base (1), a movable plate (63) is slidably connected inside the support base (61), and a pedal (62) is fixedly connected to the top of the movable plate (63); A connecting plate (39) is symmetrically fixedly connected to the bottom of the pedal (62), and a push rod (38) is rotatably connected between the connecting plate (39) and the movable rod (37).
2. The poultry protection device for ecological breeding under the forest according to claim 1 is characterized by: A protrusion (35) is symmetrically fixedly connected inside the device base (1), and a spring 1 (36) is symmetrically fixedly connected between the movable frame (34) and the protrusion (35).
3. The poultry protection device for ecological breeding under the forest according to claim 2 is characterized by: The support seat (61) is rotatably connected to a mounting shaft (57) inside, the movable sleeve (51) is fixedly connected to a driven wheel (541) outside, the mounting shaft (57) is fixedly connected to a driving wheel (542) outside, and a transmission belt (543) is transmission-connected between the driven wheel (541) and the driving wheel (542).
4. The poultry protection device for ecological breeding under the forest according to claim 2 is characterized by: A fixing block (56) is fixedly connected to the bottom of the movable sleeve (51), and a torsion spring (58) is fixedly connected between the fixing block (56) and the mounting shaft (57).
5. The poultry protection equipment for ecological breeding under the forest according to claim 2 is characterized by: The energy storage mechanism (55) comprises a fixed disk (556a) symmetrically fixedly connected to the outside of the installation shaft (57); a movable seat (552) is symmetrically slidably connected inside the support seat (61); a spiral pair transmission is formed between the movable seat (552) and the installation shaft (57); a ratchet (554) is rotatably connected to the outside of the installation shaft (57); a connecting disk (555) is symmetrically fixedly connected to the outside of the ratchet (554); a slider (556b) is symmetrically slidably connected inside the connecting disk (555) and the fixed disk (556a); a limiting rod (556c) is fixedly connected to the outside of the slider (556b); a spring three (556d) is fixedly connected between the limiting rod (556c) and the movable seat (552).
6. The poultry protection equipment for ecological breeding under the forest according to claim 2 is characterized by: The bottom of the support seat (61) is fixedly connected to a fixing seat (553), the interior of the fixing seat (553) is slidably connected to a limiting block (557a), and a spring four (557b) is fixedly connected between the limiting block (557a) and the fixing seat (553).
7. The poultry protection equipment for ecological breeding under the forest according to claim 3 is characterized by: A movable block (551a) is symmetrically fixedly connected to the lower surface of the pedal (62); a clamping block (551b) is evenly slidably connected inside the movable block (551a); a second spring (551c) is fixedly connected between the clamping block (551b) and the movable block (551a); and the clamping block (551b) is adapted to the ratchet (554).
8. The poultry protection equipment for ecological breeding under the forest according to claim 3 is characterized by: The inside of the equipment base (1) is symmetrically provided with square grooves, and the movable frame (34) is slidably connected between the square grooves and the protrusions (35).
Citation Information
Patent Citations
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